DTI
DTI REPORT NO. 655V
MIL-STD-167, TYPE I VIBRATION TEST REPORT FOR
901D OF THE ARGON SHIP EXPLORATION
EQUIPMENT INCREMENT E (SSEE-E) SYSTEM
Prepared For:
901D, LLC
360 Route 59
Tallman, New York 10982-0615
Prepared Under:
Purchase Order No. S0250D
July, 2003
Publications Control No. R030701
Dynamic Testing • A Division of DTI Holdings, LLC • P.O. Box 494, 3915 Sunnymeade Rd., Rustburg, VA 24588 • 434-846-0244 • dti@dynatest.net
MIL-STD-167, TYPE I VIBRATION TEST
REPORT FOR 901D OF THE ARGON SHIP
EXPLORATION EQUIPMENT INCREMENT E
(SSEE-E) SYSTEM
Prepared For:
901D, LLC
360 Route 59
Tallman, New York 10982-0615
Prepared Under:
Purchase Order S0250D
Prepared By:
Dynamic Testing
A Division of DTI Holdings, LLC
3915 Sunnymeade Road
Rustburg, Virginia 24588
July, 2003
TABLE OF CONTENTS
Section
1.0
Title
Page
INTRODUCTION ..................................................................................................
1
1.1
1.2
1.3
Purpose........................................................................................................
Background .................................................................................................
Scope...........................................................................................................
1
1
1
APPLICABLE DOCUMENTS ..............................................................................
1
2.1
2.2
Military Specification .................................................................................
Commercial Documents..............................................................................
1
1
TEST REQUIREMENTS .......................................................................................
2
3.1
3.2
Items Tested ................................................................................................
Test Item Configuration..............................................................................
2
2
3.2.1
3.2.2
3.2.3
3.2.4
HF Receive Rack .........................................................................
System Control Rack ...................................................................
V/UHF Receive Rack ..................................................................
CCOP Rack..................................................................................
2
3
3
4
Test Weights for EUT.................................................................................
4
4.0
VIBRATION TEST MACHINE ............................................................................
5
5.0
TEST PROCEDURE ..............................................................................................
5
5.1
5.2
5.3
5.4
Mode of Operation......................................................................................
Exploratory Vibration Test .........................................................................
Variable Frequency Test .............................................................................
Endurance Test............................................................................................
5
5
6
6
VIBRATION TEST OF CCOP RACK ..................................................................
6
2.0
3.0
3.3
6.0
6.1
6.2
6.3
Test Installation of CCOP Rack..................................................................
Instrumentation ...........................................................................................
Vertical Test................................................................................................
6
9
12
6.3.1
12
Vertical Exploratory Test.............................................................
R030701
i
TABLE OF CONTENTS (Continued)
Section
Title
Page
6.3.2
6.3.3
Vertical Variable Frequency Test ................................................
Vertical Endurance Test...............................................................
12
13
Side-to-Side Test.........................................................................................
13
6.4.1
6.4.2
6.4.3
Side-to-Side Exploratory Test......................................................
Side to Side Variable Frequency Test..........................................
Side-to-Side Endurance Test........................................................
13
13
14
Front-to-Back Test ......................................................................................
14
6.5.1
6.5.2
6.5.3
Front-to-Back Exploratory Test...................................................
Front-to-Back Variable Frequency Test ......................................
Front-to-Back Endurance Test.....................................................
14
14
15
VIBRATION TEST OF SYSTEM CONTROL RACK .........................................
15
7.1
7.2
7.3
Test Installation of System Control Rack ...................................................
Instrumentation ...........................................................................................
Vertical Test................................................................................................
15
18
21
7.3.1
7.3.2
7.3.3
Vertical Exploratory Test.............................................................
Vertical Variable Frequency Test ................................................
Vertical Endurance Test...............................................................
21
21
22
Side-to-Side Test.........................................................................................
22
7.4.1
7.4.2
7.4.3
Side-to-Side Exploratory Test......................................................
Side-to-Side Variable Frequency Test .........................................
Side-to-Side Endurance Test........................................................
22
23
23
Front-to-Back Test ......................................................................................
24
7.5.1
7.5.2
7.5.3
Front-to-Back Exploratory Test...................................................
Front-to-Back Variable Frequency Test ......................................
Front-to-Back Endurance Test.....................................................
24
24
25
VIBRATION TEST OF V/UHF RECEIVE RACK...............................................
25
8.1
25
6.4
6.5
7.0
7.4
7.5
8.0
Test Installation of V/UHF Receive Rack ..................................................
R030701
ii
TABLE OF CONTENTS (Continued)
Section
Title
8.2
8.3
Instrumentation ...........................................................................................
Vertical Test................................................................................................
28
30
8.3.1
8.3.2
8.3.3
Vertical Exploratory Test.............................................................
Vertical Variable Frequency Test ................................................
Vertical Endurance Test...............................................................
30
30
31
Side-to-Side Test.........................................................................................
31
8.4.1
8.4.2
8.4.3
Side-to-Side Exploratory Test......................................................
Side-to-Side Variable Frequency Test .........................................
Side-to-Side Endurance Test........................................................
31
31
32
Front-to-Back Test ......................................................................................
32
8.5.1
8.5.2
8.5.3
Front-to-Back Exploratory Test...................................................
Front-to-Back Variable Frequency Test ......................................
Front-to-Back Endurance Test.....................................................
32
32
33
VIBRATION TEST OF HF RECEIVE RACK......................................................
33
9.1
9.2
9.3
Test Installation of HF Receive Rack .........................................................
Instrumentation ...........................................................................................
Vertical Test................................................................................................
33
36
39
9.3.1
9.3.2
9.3.3
Vertical Exploratory Test.............................................................
Vertical Variable Frequency Test ................................................
Vertical Endurance Test...............................................................
39
40
41
Side-to-Side Test.........................................................................................
41
9.4.1
9.4.2
9.4.3
Side-to-Side Exploratory Test......................................................
Side-to-Side Variable Frequency Test .........................................
Side-to-Side Endurance Test........................................................
41
41
42
Front-to-Back Test ......................................................................................
42
9.5.1
9.5.2
9.5.3
42
42
43
8.4
8.5
9.0
Page
9.4
9.5
Front-to-Back Exploratory Test...................................................
Front-to-Back Variable Frequency Test ......................................
Front-to-Back Endurance Test.....................................................
R030701
iii
TABLE OF CONTENTS (Concluded)
Section
Title
Page
10.0
DISPOSITION OF MATERIALS..........................................................................
43
11.0
SIGNATURES........................................................................................................
43
R030701
iv
LIST OF TABLES
Table
1
2
3
4
5
Title
Page
Table Amplitudes....................................................................................................
Test Instrumentation ...............................................................................................
Test Instrumentation ...............................................................................................
Test Instrumentation ...............................................................................................
Test Instrumentation ...............................................................................................
6
9
18
28
36
LIST OF PHOTOGRAPHS
Photograph Title
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Page
Vertical and Side-to-Side Orientations .............................................................
Front-to-Back Orientation.................................................................................
Test Instrumentation .........................................................................................
Test Instrumentation .........................................................................................
Vertical and Side-to-Side Orientations .............................................................
Front-to-Back Orientation.................................................................................
Test Instrumentation .........................................................................................
Test Instrumentation .........................................................................................
Test Instrumentation .........................................................................................
Control Knob Ajar ............................................................................................
Vertical and Side-to-Side Orientations .............................................................
Front-to-Back Orientation.................................................................................
Test Instrumentation .........................................................................................
Test Instrumentation .........................................................................................
Test Instrumentation .........................................................................................
Vertical and Side-to-Side Orientations .............................................................
Front-to-Back Orientation.................................................................................
Test Instrumentation .........................................................................................
Test Instrumentation .........................................................................................
Location of 5V Power Supply...........................................................................
R030701
v
7
8
10
11
16
17
18
19
20
22
26
27
28
29
29
34
35
37
38
39
1.0
INTRODUCTION
1.1
Purpose
The purpose of this report is to document the results of MIL-STD-167-1 Vibration
Type I testing conducted on the Argon Ship Exploration Equipment Increment E
(SSEE-E) System for 901D. Testing was conducted June 10 through 26, 2003.
1.2
Background
The Ship Exploration Equipment Increment E (SSEE-E) System is composed of
four 901D Model 100, externally-isolated cabinets, with the components being
located per the COTS equipment layout shown in Section 1.1 of 901D’s “Shock
and Vibration Test Procedure for Argon Engineering Ship Signal Equipment
Increment E (SSEE-E) Data Item S00H, Rev. A,” dated 24-April-2003. The
SSEE-E is planned for installation on all U.S. Navy ships. The first systems in
service will be installed onboard AEGIS cruisers and LHA5 ships, followed by
the LHD8 and LPA ships. It is a first article item (new production) and requires
vibration qualification in accordance with MIL-S-167-1 (Type 1).
1.3
Scope
This report describes the activities performed during the pre-test period, the
fixture and equipment installation on the vibration test machine, actual test
operations, instrumentation setup, physical inspections, operational tests, and test
results.
2.0
APPLICABLE DOCUMENTS
2.1
Military Specification
MIL-STD-167-1 dated May 1, 1974
2.2
Commercial Documents
DTI Drawing No. J-655
“Test Fixtures for UNDEX Testing
Against the SSEE-E Cabinets for
901D”
901D Document No. D00231-QTP-001
“Shock and Vibration Test Procedure
for Argon Engineering. Ship Signal
Equipment Increment E (SSEE-E)
Data Item S00H, Rev. A,” dated 24April-2003
R030701
1
3.0
TEST REQUIREMENTS
3.1
Items Tested
1)
2)
3)
4)
HF Receive Rack
System Control Rack
V/UHF Receive Rack
CCOP Rack
The equipment under test (EUTs) were interconnected such that operability checks
could be performed. Initially, the CCOP was installed on the vibration table (see
Photograph Nos. 1 and 2) while the System Control, V/UHF Receive, and HF
Receive Racks were test support items. The CCOP Rack test effort is described in
Section 6.0.
After completing CCOP Rack vibration testing, the CCOP Rack was removed from
the table and replaced with System Control Rack (see Photograph Nos. 5 and 6).
The vibration test effort associated with System Control Rack is described in Section
7.0. In this arrangement, the CCOP, V/UHF Receive, and HF Receive Racks were
test support items.
After completing System Control Rack vibration testing, the System Control Rack
was removed from the table and replaced with V/UHF Receive Rack (see
Photograph Nos. 11 and 12). The vibration test effort associated with V/UHF
Receive Rack is described in Section 8.0. In this arrangement, the CCOP, System
Control, and HF Receive Racks were test support items.
After completing V/UHF Receive Rack vibration testing, the V/UHF Receive Rack
was removed from the table and replaced with HF Receive Rack (see Photograph
Nos. 16 and 17). The vibration test effort associated with HF Receive Rack is
described in Section 9.0. In this arrangement, the CCOP, System Control, and
V/UHF Racks were test support items.
3.2
Test Item Configuration
3.2.1
HF Receive Rack
Manufacturer:
Part No:
Dimensions:
Weight:
Vertical CG:
901D
275032
71.97” H x 22.0” W x 34.62” D (with isolators)
724 pounds
34” from mounting base
Shock Isolators: Base – (6) 901D Part No. 70512-1
Sway – (2) 901D Part No. 70526-1
R030701
2
Subsidiary Components of the HF Receive Rack
Qty.
1
1
1
1
1
1
1
1
1
3.2.2
Hardware Item
Vendor
AN/SSQ-137 (V) 1 Rack
Patch Panel HF
Distribution Unit, RF
Printer Unit, Laser
Tuner, HF
Workstation, Intel (Jots3)
Keyboard/Display Unit
Digital Processing Unit
Uninterruptible Power Supply
901D
ARGON
ARGON
ARGON
ARGON
ARGON
ARGON
ARGON
ARGON
System Control Rack
Manufacturer:
Part No:
Dimensions:
Weight:
Vertical CG:
901D
275033
71.97” H x 22.0” W x 34.62” D (with isolators)
820 pounds
34” from mounting base
Shock Isolators: Base – (6) 901D Part No. 70512-1
Sway – (2) 901D Part No. 70526-1
Subsidiary Components of the System Control Rack
Qty.
1
1
1
1
1
1
1
1
1
1
1
1
1
3.2.3
Hardware Item
AN/SSQ-137 (V) 1 Rack
Time Unit, Precision
Distribution Unit, Time Frequency
Filter Unit, HF, V/UHF
Interface Unit, INT/EXT
Patch Panel Audio
Receiver, R-2411
Up Converter
Workstation, Intel (Jots4)
Keyboard, Display Unit
Server, Unix (CUB)
Server Unix (LH)
Uninterruptible Power Supply
Vendor
901D
ARGON
ARGON
ARGON
ARGON
ARGON
ARGON
ARGON
ARGON
ARGON
ARGON
ARGON
ARGON
V/UHF Receive Rack
Manufacturer:
Part No:
Dimensions:
R030701
901D
275034
71.97” H x 22.0” W x 34.62” D (with isolators)
3
Weight:
Vertical CG:
824 pounds
34” from mounting base
Shock Isolators: Base – (6) 901D Part No. 70512-1
Sway – (2) 901D Part No. 70526-1
Subsidiary Components of the V/UHF Receive Rack
Qty.
1
1
1
1
1
1
1
1
1
3.2.4
Hardware Item
Vendor
AN/SSQ-137 (V) 1 Rack
Patch Panel, V/UHF
Distribution Unit, RF, V/UHF
Receiver, R-2412
Receiver, V/UHF
Workstation, Intel (Jots5)
Keyboard/Display Unit
Digital Processing Unit
Uninterruptible Power Supply
901D
ARGON
ARGON
ARGON
ARGON
ARGON
ARGON
ARGON
ARGON
CCOP Rack
Manufacturer:
Part No:
Dimensions:
Weight:
Vertical CG:
901D
275035
71.97” H x 22.0” W x 34.62” D (with isolators)
297 pounds (dummy loaded to 800 lbs. for testing)
34” from mounting base
Shock Isolators: Base – (6) 901D Part No. 70512-1
Sway – (2) 901D Part No. 70526-1
Subsidiary Components of the CCOP Rack
Qty.
1
1
3.3
Hardware Item
Vendor
AN/SSQ-137 (V) 1 Rack
Uninterruptible Power Supply
901D
ARGON
Test Weights for EUT
1) HF Receive Rack
Test Fixture
HF Receive Rack
1,594 pounds
724 pounds
Total Vibration Table Payload
R030701
2,318 pounds
4
4.0
2) System Control Rack
Test Fixture
System Control Rack
Total Vibration Table Payload
1,594 pounds
820 pounds
2,414 pounds
3) V/UHF Receive Rack
Test Fixture
V/UHF Receive Rack
Total Vibration Table Payload
1,594 pounds
824 pounds
2,418 pounds
4) CCOP Control Rack
Test Fixture
CCOP Control Rack
Total Vibration Table Payload
1,594 pounds
820 pounds
2,414 pounds
VIBRATION TEST MACHINE
Manufacturer:
Model No:
Serial No:
5.0
L.A.B. Corporation
RVH-72-5000
466013
TEST PROCEDURE
All EUT was vibration tested in three orthogonal axes (vertical, side-to-side and
front-to-back directions), from 4 to 33 hertz. A vibration test sequence was
performed for each axis. As specified in MIL-S-167, the sequence included an
exploratory vibration test, variable frequency test and endurance test. The test
sequence in one direction was successfully completed before proceeding to test in
another direction.
5.1
Mode of Operation
The EUT was energized with 110 VAC power and operating during each
vibration test sequence.
5.2
Exploratory Vibration Test
The test item was secured to the vibration table and vibrated at frequencies
ranging from 4 to 33 hertz at table vibratory amplitudes of 0.020 ± 0.004 inch
(peak-to-peak). Each integral frequency was maintained for a minimum of 15
seconds and frequencies and locations of resonances were noted.
R030701
5
5.3
Variable Frequency Test
The test items were vibrated at frequencies ranging from 4 to 33 hertz in discrete
frequency intervals of 1 hertz at the amplitude shown in Table 1. Each integral
frequency was maintained for a minimum of 5 minutes and results for the EUT
are recorded in Section 6.0 through 9.0 of this test report.
Table 1. Table Amplitudes
Frequency (Hz.)
4 to 15
16 to 25
26 to 33
5.4
Amplitude (inch peak-to-peak)
0.060 + 0.012
0.040 + 0.008
0.020 + 0.004
Endurance Test
This test was performed for 2 hours at either mount resonant frequency, structural
resonant frequency or 33 hertz if no structural or mount resonant frequency was
identified by the test engineer. If more than one resonance was identified the test
was performed at 1 hour for each identified frequency. The table amplitudes were
as noted in Table 1.
6.0
VIBRATION TEST OF CCOP RACK
6.1
Test Installation of CCOP Rack
The CCOP rack was installed on the test fixture. The rack was mounted to the test
fixture using three mount interface plates that attached the eight ShockTech 901D
isolators to the cabinets.
The 6 base isolators were bolted to the interface plates (3 mounts per plate) with a
total of 27 (9 per isolator) ¼-20 UNC Grade 5 bolts, flat washers, lock washers,
and with nyloc nuts. The 2 sway brace isolators were bolted to the interface plate
with a total of 12 (6 per isolator) ¼-20 UNC Grade 5 bolts, flat washers, lock
washers, and with nyloc nuts.
All three-interface plates were attached to the test fixture using sixteen ½-13
Grade 5 bolts. The test fixture was clamped to the vibration table. Photograph
Nos. 1 and 2 show the installation on the table.
R030701
6
Photograph No. 1. Vertical and Side-to-Side Orientations
R030701
7
Photograph No. 2. Front-to-Back Orientation
R030701
8
6.2
Instrumentation
One accelerometer was located at the center of the vibration table to measure
table amplitudes and three accelerometers were located on the fixture or the EUT.
The locations of the gauges are listed in Table 2. Photograph Nos. 3 and 4 show
the location of the test instrumentation.
Table 2. Test Instrumentation
Item
A1
A2
A3
A4
R030701
Orientation
Direction of
Excitation
Direction of
Excitation
Direction of
Excitation
Direction of
Excitation
Location
Table
Center of Back Brace on Fixture
Front Top Right Corner of CCOP Rack
Front Bottom Left Side of CCOP Rack, next to UPS
9
A3
A4
A1
Photograph No. 3. Test Instrumentation
R030701
10
A2
Photograph No. 4. Test Instrumentation
R030701
11
6.3
Vertical Test
6.3.1
Vertical Exploratory Test
The vibration table was excited in the vertical direction at discrete frequencies
ranging from 4 to 33 hertz. A mount frequency was identified at 8.0 hertz and
there were no structural resonance frequencies identified.
6.3.2
Vertical Variable Frequency Test
Single amplitude results from the vertical variable frequency test are summarized
in the table below. A mount frequency was equally identified at 8.0 and 9.0 hertz
and there were no structural resonance frequencies identified.
Back
Top Bottom
Table
Table
Table
Brace Right
Left
Input
Input
Input
Q of A3
Side of Side of
of
Frequency Amplitude Amplitude
Fixture Cabinet Cabinet
A1
A2
A3 (Gs) A4 (Gs)
(Hertz)
A1 (Gs) (Inches)
(Gs)
4.0000
0.0480
0.0294 0.0460 0.0570 0.0580
1.1875
5.0000
0.0600
0.0235 0.0580 0.0820 0.0820 1.366667
6.0000
0.0900
0.0245 0.0870 0.1480 0.1530 1.644444
7.0000
0.1243
0.0248 0.1203 0.3340 0.3234 2.687047
8.0000
0.1650
0.0252 0.1570 0.6920 0.6710 4.193939
9.0000
0.2930
0.0354 0.2770 1.0700 1.2430 3.651877
10.0000
0.3600
0.0352 0.3620 0.7950 0.7990 2.208333
11.0000
0.4050
0.0328 0.4100 0.6280 0.6160 1.550617
12.0000
0.4390
0.0298 0.4390 0.4850 0.4840 1.104784
13.0000
0.5460
0.0316 0.5390 0.4640 0.4640 0.849817
14.0000
0.5870
0.0293 0.6070 0.4110 0.4080 0.70017
15.0000
0.6230
0.0271 0.6730 0.3690 0.3610 0.592295
16.0000
0.5950
0.0227 0.7460 0.3410 0.3410 0.573109
17.0000
0.6880
0.0233 0.9290 0.3670 0.3610 0.53343
18.0000
0.8060
0.0243 0.8100 0.2760 0.2740 0.342432
19.0000
0.7940
0.0215 0.8190 0.2290 0.2350 0.288413
20.0000
0.9130
0.0223 0.9240 0.2270 0.2340 0.248631
21.0000
0.8680
0.0193 0.9027 0.1887 0.1925 0.217396
22.0000
1.1000
0.0222 0.9630 0.1830 0.1790 0.166364
23.0000
1.1800
0.0218 1.0600 0.1750 0.1630 0.148305
24.0000
1.1500
0.0195 1.1700 0.1820 0.1460 0.158261
25.0000
1.2600
0.0197 1.3200 0.2580 0.1550 0.204762
26.0000
0.7680
0.0111 0.8400 0.1710 0.1050 0.222656
27.0000
0.7690
0.0103 0.8180 0.1120 0.1370 0.145644
28.0000
0.7740
0.0097 0.8760 0.0370 0.1480 0.047804
29.0000
0.9100
0.0106 0.9060 0.0240 0.1390 0.026374
30.0000
0.8840
0.0096 1.0360 0.0070 0.1287 0.007919
R030701
12
31.0000
32.0000
33.0000
6.3.3
0.9438
0.9940
1.2600
0.0096
0.0095
0.0113
1.1500 0.0040 0.1170 0.004238
1.2300 0.0030 0.1070 0.003018
1.2500 0.0100 0.0970 0.007937
Vertical Endurance Test
The endurance test (2 hours) was run at an excitation frequency of 8.0 hertz for
one hour and at an excitation frequency of 9.0 hertz for one hour.
6.4
Side-to-Side Test
6.4.1
Side-to-Side Exploratory Test
The vibration table was excited in the side-to-side direction at discrete frequencies
ranging from 4 to 33 hertz. A mount frequency was identified at 7.0 hertz and
there were no structural resonance frequencies identified.
6.4.2 Side-to-Side Variable Frequency Test
Single amplitude results from the side-to-side variable frequency test are
summarized in the table below. A mount frequency was identified at 7.0 hertz
and there were no structural resonance frequencies identified.
Table Input
Frequency
(Hertz)
4.0000
5.0000
6.0000
7.0000
8.0000
9.0000
10.0000
11.0000
12.0000
13.0000
14.0000
15.0000
16.0000
17.0000
18.0000
19.0000
20.0000
21.0000
22.0000
R030701
Top
Bottom
Table
Table
Back
Right Left Side
Input
Input
Brace of
Side of
of
Amplitude
Amplitude
Fixture
Cabinet Cabinet
A1
(Inches) A2 (Gs) A3 (Gs) A4 (Gs)
A1 (Gs)
0.0410
0.0251
0.0660
0.3790
0.1810
0.0600
0.0235
0.0750
0.2280
0.0750
0.0910
0.0247
0.0960
0.2510
0.0590
0.1249
0.0249
0.1170
0.4270
0.0830
0.2241
0.0343
0.3439
0.4670
0.2550
0.2953
0.0357
0.4620
0.2770
0.5260
0.3570
0.0349
0.4870
0.4470
0.5000
0.4010
0.0324
0.5280
0.3870
0.2970
0.4610
0.0313
0.6080
0.3210
0.1960
0.5460
0.0316
0.7380
0.2990
0.1460
0.6130
0.0306
0.8310
0.2770
0.1070
0.8020
0.0349
1.1540
0.3140
0.0710
0.6260
0.0239
0.8630
0.2430
0.0490
0.6279
0.0213
0.9390
0.2430
0.0310
0.6510
0.0197
1.0120
0.2230
0.0220
0.7780
0.0211
1.2790
0.2770
0.0560
0.8720
0.0213
1.4600
0.3190
0.0860
0.8450
0.0188
1.4500
0.3150
0.1180
0.8650
0.0175
1.6290
0.3570
0.1760
13
Q of A3
9.243902
3.8
2.758242
3.418735
2.083891
0.938029
1.252101
0.965087
0.696312
0.547619
0.451876
0.391521
0.388179
0.387004
0.34255
0.356041
0.365826
0.372781
0.412717
23.0000
24.0000
25.0000
26.0000
27.0000
28.0000
29.0000
30.0000
31.0000
32.0000
33.0000
6.4.3
0.8865
0.9495
1.0450
0.6530
0.6815
0.6383
0.9329
0.9375
0.9377
0.8876
1.0750
0.0164
0.0161
0.0164
0.0095
0.0091
0.0080
0.0109
0.0102
0.0096
0.0085
0.0097
1.8320
2.1720
2.5850
1.6490
1.6300
1.7650
2.7490
2.6310
3.0480
3.5670
3.6400
0.4835
0.4177
0.8202
0.2040
0.2275
0.2488
0.4798
0.5986
0.7558
1.1730
1.5000
0.2510
0.5671
0.4392
0.3580
0.2272
0.1490
0.2937
0.3890
0.5505
0.9121
1.0250
0.545403
0.439916
0.78488
0.312404
0.333822
0.389785
0.51431
0.638507
0.806015
1.321541
1.395349
Side-to-Side Endurance Test
The endurance test (2 hours) was run at an excitation frequency of 7.0 hertz for 2
hours.
6.5
Front-to-Back Test
6.5.1
Front-to-Back Exploratory Test
Prior to the front-to-back test, the test fixture was unclamped from the vibration
table, rotated 90º, and re-secured to the table. Photograph No. 3 shows the test
setup in the rotated configuration. The vibration table was excited in the frontback direction at discrete frequencies ranging from 4 to 33 hertz. A mount
frequency was identified at 8.0 hertz and there were no structural resonance
frequencies identified.
6.5.2
Front-to-Back Variable Frequency Test
Single amplitude results from the front-to-back variable frequency test are
summarized in the table below. A mount frequency was equally identified at 8.0
and 9.0 hertz and there were no structural resonance frequencies identified.
Table Input
Frequency
(Hertz)
4.0000
5.0000
6.0000
7.0000
8.0000
9.0000
10.0000
11.0000
R030701
Top
Bottom
Table
Table
Back
Right Left Side
Input
Input
Brace of
Side of
of
Amplitude
Amplitude
Fixture
Cabinet Cabinet
A1
(Inches) A2 (Gs) A3 (Gs) A4 (Gs)
A1 (Gs)
0.0439
0.0269
0.0200
0.0430
0.0810
0.0630
0.0247
0.0420
0.1780
0.2914
0.1310
0.0356
0.2050
0.1830
0.4381
0.1840
0.0368
0.2440
0.2050
0.3664
0.1922
0.0294
0.2379
0.3750
0.2796
0.2830
0.0342
0.4080
0.5440
0.1410
0.3250
0.0318
0.4420
0.3230
0.0380
0.3590
0.0290
0.4720
0.2521
0.0530
14
Q of A3
0.979499
2.825397
1.396947
1.11413
1.951093
1.922261
0.993846
0.702228
12.0000
13.0000
14.0000
15.0000
16.0000
17.0000
18.0000
19.0000
20.0000
21.0000
22.0000
23.0000
24.0000
25.0000
26.0000
27.0000
28.0000
29.0000
30.0000
31.0000
32.0000
33.0000
6.5.3
0.4330
0.5009
0.5690
0.7520
0.4820
0.6410
0.7400
0.8060
0.8982
0.8859
0.9180
0.9720
1.0740
1.2020
0.7100
0.7040
0.7310
0.8350
0.9090
0.8038
0.8830
0.9470
0.0294
0.0290
0.0284
0.0327
0.0184
0.0217
0.0224
0.0219
0.0220
0.0197
0.0186
0.0180
0.0182
0.0188
0.0103
0.0095
0.0091
0.0097
0.0099
0.0082
0.0084
0.0085
0.5530
0.6560
0.7350
0.9860
0.6310
0.8440
0.8560
1.0600
1.1800
1.2030
1.2700
1.3740
1.5490
1.7720
1.1100
1.0900
1.2000
1.3990
1.5880
1.7070
1.9610
1.9050
0.2220
0.2112
0.1932
0.2010
0.1210
0.1340
0.1140
0.1260
0.1230
0.1070
0.1020
0.0930
0.0740
0.0880
0.2200
0.2250
0.1810
0.1930
0.1782
0.1990
0.2120
0.1990
0.0710
0.0790
0.0780
0.0850
0.0530
0.0610
0.0470
0.0490
0.0460
0.0350
0.0240
0.0110
0.2750
0.1230
0.1718
0.1410
0.1060
0.1010
0.0825
0.0875
0.0830
0.0670
0.512702
0.421641
0.339543
0.267287
0.251037
0.209048
0.154054
0.156328
0.136941
0.120781
0.111111
0.095679
0.068901
0.073211
0.309859
0.319602
0.247606
0.231138
0.19604
0.247574
0.240091
0.210137
Front-to-Back Endurance Test
The endurance test (2 hours) was run at an excitation frequency of 8.0 hertz for 1
hour and at an excitation frequency of 9.0 hertz for 1 hour.
7.0
VIBRATION TEST OF SYSTEM CONTROL RACK
7.1
Test Installation of System Control Rack
The System Control Rack was installed on the test fixture. The rack was mounted
to the test fixture using three mount interface plates that attached the eight
ShockTech 901D isolators to the cabinets. The 6 base isolators were bolted to the
interface plates (3 mounts per plate) with a total of 27 (9 per isolator) ¼-20 UNC
Grade 5 bolts, flat washers, lock washers, and with nyloc nuts.
The two sway brace isolators were bolted to the interface plate with a total of 12
(6 per isolator) ¼-20 UNC Grade 5 bolts, flat washers, lock washers, and with
nyloc nuts.
All three-interface plates were attached to the test fixture using sixteen ½-13
Grade 5 bolts. The test fixture was clamped to the vibration table. Photograph
Nos. 5 and 6 show the installation on the table.
R030701
15
Photograph No. 5. Vertical and Side-to-Side Orientations
R030701
16
Photograph No. 6. Front-to-Back Orientation
R030701
17
7.2
Instrumentation
One accelerometer was located at the center of the vibration table to measure
table amplitudes and three accelerometers were located on the fixture or the EUT.
The locations of the gauges are listed in Table 3. Photograph Nos. 7 through 9
show the location of the test instrumentation.
Table 3. Test Instrumentation
Item
A1
A2
A3
A4
Orientation
Direction of
Excitation
Direction of
Excitation
Direction of
Excitation
Direction of
Excitation
Location
Table
Center of Back Brace on Fixture
Front Top Right Corner of CCOP Rack
Front Bottom Left Side of CCOP Rack, next to UPS
A3
A4
Photograph No. 7. Test Instrumentation
R030701
18
A1
Photograph No. 8. Test Instrumentation
R030701
19
A2
Photograph No. 9. Test Instrumentation
R030701
20
7.3
Vertical Test
7.3.1
Vertical Exploratory Test
The vibration table was excited in the vertical direction at discrete frequencies
ranging from 4 to 33 hertz. A mount frequency was identified at 7.0 hertz and
there were no structural resonance frequencies identified.
7.3.2
Vertical Variable Frequency Test
Single amplitude results from the vertical variable frequency test are summarized
in the table below. A mount frequency was identified at 7.0 hertz and there were
no structural resonance frequencies identified.
Table Input
Frequency
(Hertz)
4.0000
5.0000
6.0000
7.0000
8.0000
9.0000
10.0000
11.0000
12.0000
13.0000
14.0000
15.0000
16.0000
17.0000
18.0000
19.0000
20.0000
21.0000
22.0000
23.0000
24.0000
25.0000
26.0000
27.0000
28.0000
29.0000
30.0000
31.0000
R030701
Top
Bottom
Table
Table
Back
Right Left Side
Input
Input
Brace of
Side of
of
Amplitude
Amplitude
Fixture
Cabinet Cabinet
A1
(Inches) A2 (Gs) A3 (Gs) A4 (Gs)
A1 (Gs)
0.0466
0.0285
0.0465
0.0583
0.0600
0.0654
0.0256
0.0627
0.0937
0.0942
0.0915
0.0249
0.0958
0.1849
0.1836
0.1243
0.0248
0.1280
0.5301
0.5461
0.1600
0.0245
0.1369
0.2401
0.3436
0.2745
0.0332
0.2739
0.7620
0.7156
0.3470
0.0340
0.3465
0.6319
0.6069
0.3820
0.0309
0.3699
0.5044
0.4623
0.4456
0.0303
0.4438
0.4224
0.3978
0.5116
0.0296
0.4978
0.3931
0.3691
0.5759
0.0288
0.5750
0.3570
0.3335
0.6918
0.0301
0.7469
0.3497
0.3386
0.5055
0.0193
0.5165
0.2347
0.2272
0.6609
0.0224
0.6578
0.2557
0.2480
0.6834
0.0206
0.6697
0.2046
0.1982
0.8392
0.0228
0.8127
0.2254
0.2193
0.9049
0.0221
0.8776
0.2148
0.2084
0.8804
0.0195
0.8677
0.1862
0.1824
0.9439
0.0191
0.9321
0.1793
0.1756
1.0540
0.0195
1.0200
0.1736
0.1733
1.1590
0.0197
1.1400
0.1751
0.1687
1.2900
0.0202
1.2490
0.1698
0.1701
0.7786
0.0113
0.7956
0.1059
0.1088
0.7505
0.0101
0.7392
0.0943
0.0911
0.8136
0.0102
0.7946
0.0889
0.0842
0.9620
0.0112
0.9355
0.0915
0.0867
0.9652
0.0105
0.8840
0.0705
0.0675
0.9846
0.0100
1.0220
0.0940
0.1039
21
Q of A3
1.251073
1.432722
2.020765
4.264682
1.500625
2.775956
1.821037
1.320419
0.947935
0.768374
0.619899
0.505493
0.464293
0.386897
0.299385
0.268589
0.237374
0.211495
0.189957
0.164706
0.151079
0.131628
0.136013
0.12565
0.109267
0.095114
0.073042
0.09547
32.0000
33.0000
7.3.3
1.0950
1.3210
0.0105
0.0119
1.1000
1.0720
0.1162
0.1094
0.1228
0.1114
0.106119
0.082816
Vertical Endurance Test
The endurance test (2 hours) was run at an excitation frequency of 7.0 hertz.
7.4
Side-to-Side Test
7.4.1
Side-to-Side Exploratory Test
The vibration table was excited in the side-to-side direction at discrete frequencies
ranging from 4 to 33 hertz. During the test, the control knob fell off of the
Receiver, R-2411, as seen in Photograph No. 10. The knob was re-attached and
the set screw tightened to prevent further loosening of the knob. A mount
frequency was equally identified at 8.0 and 9.0 hertz and there were no structural
resonance frequencies identified.
Photograph No. 10. Control Knob Ajar
R030701
22
7.4.2 Side-to-Side Variable Frequency Test
Single amplitude results from the side-to-side variable frequency test are
summarized in the table below. A mount frequency was equally identified at 8.0
and 9.0 hertz and there were no structural resonance frequencies identified.
Table Input
Frequency
(Hertz)
4.0000
5.0000
6.0000
7.0000
8.0000
9.0000
10.0000
11.0000
12.0000
13.0000
14.0000
15.0000
16.0000
17.0000
18.0000
19.0000
20.0000
21.0000
22.0000
23.0000
24.0000
25.0000
26.0000
27.0000
28.0000
29.0000
30.0000
31.0000
32.0000
33.0000
7.4.3
Top
Bottom
Table
Table
Back
Right Left Side
Input
Input
Brace of
Side of
of
Amplitude
Amplitude
Fixture
Cabinet Cabinet
A1
(Inches) A2 (Gs) A3 (Gs) A4 (Gs)
A1 (Gs)
0.0460
0.0281
0.0600
0.1790
0.0810
0.0600
0.0235
0.0620
0.1100
0.0270
0.1000
0.0272
0.0960
0.1380
0.0140
0.1280
0.0256
0.1090
0.1920
0.0140
0.1920
0.0294
0.2990
0.1690
0.1590
0.2660
0.0321
0.3950
0.3760
0.4240
0.3140
0.0307
0.4180
0.3630
0.3610
0.3480
0.0281
0.4500
0.2530
0.2470
0.4080
0.0277
0.5070
0.1970
0.1910
0.4830
0.0280
0.5530
0.1720
0.1610
0.5490
0.0274
0.6840
0.1550
0.1360
0.7090
0.0308
0.9300
0.1530
0.1200
0.5490
0.0210
0.7070
0.1100
0.0838
0.5700
0.0193
0.7470
0.1010
0.0640
0.6480
0.0196
0.8410
0.1030
0.0540
0.7790
0.0211
1.0610
0.1130
0.0460
0.8780
0.0215
1.1820
0.1150
0.0310
0.8240
0.0183
1.1340
0.1090
0.0210
0.9810
0.0198
1.4230
0.1350
0.0260
0.9510
0.0176
1.3480
0.1270
0.0510
1.0580
0.0180
1.5270
0.1560
0.1040
1.1690
0.0183
1.7190
0.2300
0.3580
0.7270
0.0105
1.1110
0.1476
0.1890
0.6830
0.0092
1.0570
0.1402
0.2530
0.7344
0.0092
1.2040
0.1326
0.2610
0.8150
0.0095
1.3050
0.1868
0.2335
0.8476
0.0092
1.4650
0.2180
0.1950
0.8390
0.0085
1.5230
0.1340
0.1660
0.9440
0.0090
1.6900
0.0970
0.1460
1.0910
0.0098
1.5600
0.0380
0.1420
Q of A3
3.891304
1.833333
1.38
1.5
0.880208
1.413534
1.156051
0.727011
0.482843
0.356108
0.282332
0.215797
0.200364
0.177193
0.158951
0.145058
0.130979
0.132282
0.137615
0.133544
0.147448
0.196749
0.203026
0.205271
0.180556
0.229202
0.257197
0.159714
0.102754
0.03483
Side-to-Side Endurance Test
The endurance test (2 hours) was run at an excitation frequency of 8.0 hertz for 1
hour and at an excitation frequency of 9.0 for 1 hour.
R030701
23
7.5
Front-to-Back Test
7.5.1
Front-to-Back Exploratory Test
Prior to the front-to-back test, the test fixture was unclamped from the vibration
table, rotated 90º, and re-secured to the table. Photograph No. 5 shows the test
setup in the rotated configuration. The vibration table was excited in the frontback direction at discrete frequencies ranging from 4 to 33 hertz. A mount
frequency was identified at 8.0 hertz and there were no structural resonance
frequencies identified.
7.5.2
Front-to-Back Variable Frequency Test
Single amplitude results from the front-to-back variable frequency test are
summarized in the table below. A mount frequency was identified at 8.0 hertz
and there were no structural resonance frequencies identified.
Table Input
Frequency
(Hertz)
4.0000
5.0000
6.0000
7.0000
8.0000
9.0000
10.0000
11.0000
12.0000
13.0000
14.0000
15.0000
16.0000
17.0000
18.0000
19.0000
20.0000
21.0000
22.0000
23.0000
24.0000
25.0000
26.0000
27.0000
28.0000
R030701
Top
Bottom
Table
Table
Back
Right Left Side
Input
Input
Brace of
Side of
of
Amplitude
Fixture
Amplitude
Cabinet Cabinet
A1
(Inches) A2 (Gs) A3 (Gs) A4 (Gs)
A1 (Gs)
0.0400
0.0245
0.0180
0.0420
0.0630
0.0600
0.0235
0.0550
0.1640
0.2940
0.1190
0.0324
0.1900
0.1870
0.4010
0.1690
0.0338
0.2220
0.3240
0.3230
0.1910
0.0292
0.2720
0.3920
0.1070
0.2660
0.0321
0.3760
0.2850
0.0910
0.3090
0.0302
0.4040
0.2150
0.0930
0.3420
0.0277
0.4500
0.1660
0.0940
0.3860
0.0262
0.5070
0.1410
0.0960
0.4710
0.0273
0.6170
0.1380
0.0980
0.5330
0.0266
0.7010
0.1290
0.0940
0.6120
0.0266
0.7060
0.1360
0.0990
0.5300
0.0203
0.7100
0.0910
0.0710
0.5560
0.0188
0.7460
0.0800
0.0630
0.6260
0.0189
0.8490
0.0810
0.0620
0.7770
0.0211
1.0510
0.0860
0.0640
0.8710
0.0213
1.1840
0.0870
0.0660
0.8320
0.0185
1.1700
0.0740
0.0540
0.9000
0.0182
1.2700
0.0680
0.0520
0.9420
0.0174
1.3350
0.0610
0.0460
1.0580
0.0180
1.5510
0.0590
0.0470
1.1650
0.0182
1.7890
0.0570
0.0470
0.7510
0.0109
1.1510
0.0350
0.0290
0.6920
0.0093
1.1050
0.0330
0.0220
0.6940
0.0087
1.0910
0.0300
0.0180
24
Q of A3
1.05
2.733333
1.571429
1.91716
2.052356
1.071429
0.695793
0.48538
0.365285
0.292994
0.242026
0.222222
0.171698
0.143885
0.129393
0.110682
0.099885
0.088942
0.075556
0.064756
0.055766
0.048927
0.046605
0.047688
0.043228
29.0000
30.0000
31.0000
32.0000
33.0000
7.5.3
0.9030
0.8430
0.9050
0.9540
1.0800
0.0105
0.0092
0.0092
0.0091
0.0097
1.3920
1.1510
1.5980
1.7240
1.7180
0.0350
0.0300
0.0270
0.0220
0.0920
0.0190
0.0160
0.0100
0.0060
0.0250
0.03876
0.035587
0.029834
0.023061
0.085185
Front-to-Back Endurance Test
The endurance test (2 hours) was run at an excitation frequency of 8.0 hertz.
8.0
VIBRATION TEST OF V/UHF RECEIVE RACK
8.1
Test Installation of V/UHF Receive Rack
The V/UHF Receive rack was installed on the test. The rack was mounted to the
test fixture using three mount interface plates that attached the eight ShockTech
901D isolators to the cabinets.
The 6 base isolators were bolted to the interface plates (3 mounts per plate) with a
total of 27 (9 per isolator) ¼-20 UNC Grade 5 bolts, flat washers, lock washers,
and with nyloc nuts. The 2 sway brace isolators were bolted to the interface plate
with a total of 12 (6 per isolator) ¼-20 UNC Grade 5 bolts, flat washers, lock
washers, and with nyloc nuts. All 3 interface plates were attached to the test
fixture using sixteen ½-13 Grade 5 bolts. The test fixture was clamped to the
vibration table. Photograph Nos. 11 and 12 show the installation on the table.
R030701
25
Photograph No. 11. Vertical and Side-to-Side Orientations
R030701
26
Photograph No. 12. Front-to-Back Orientation
R030701
27
8.2
Instrumentation
One accelerometer was located at the center of the vibration table to measure
table amplitudes and three accelerometers were located on the fixture or the EUT.
The locations of the gauges are listed in Table 4. Photograph Nos. 13 through 15
show the location of the test instrumentation.
Table 4. Test Instrumentation
Item
A1
A2
A3
A4
Orientation
Direction of
Excitation
Direction of
Excitation
Direction of
Excitation
Direction of
Excitation
Location
Table
Center of Back Brace on Fixture
Front Top Right Corner of CCOP Rack
Front Bottom Left Side of CCOP Rack, Next to UPS
A3
Photograph No. 13. Test Instrumentation
R030701
28
A2
Photograph No. 14. Test Instrumentation
A1
Photograph No. 15. Test Instrumentation
R030701
29
8.3
Vertical Test
8.3.1
Vertical Exploratory Test
The vibration table was excited in the vertical direction at discrete frequencies
ranging from 4 to 33 hertz. A mount frequency was identified at 8.0 hertz and
there were no structural resonance frequencies identified.
8.3.2
Vertical Variable Frequency Test
Single amplitude results from the vertical variable frequency test are summarized
in the table below. A mount frequency was identified at 8.0 hertz and there were
no structural resonance frequencies identified.
Table Input
Frequency
(Hertz)
4.0000
5.0000
6.0000
7.0000
8.0000
9.0000
10.0000
11.0000
12.0000
13.0000
14.0000
15.0000
16.0000
17.0000
18.0000
19.0000
20.0000
21.0000
22.0000
23.0000
24.0000
25.0000
26.0000
27.0000
28.0000
29.0000
30.0000
31.0000
R030701
Top
Bottom
Table
Table
Back
Right Left Side
Input
Input
Brace of
Side of
of
Amplitude
Amplitude
Fixture
Cabinet Cabinet
A1
(Inches) A2 (Gs) A3 (Gs) A4 (Gs)
A1 (Gs)
0.0470
0.0288
0.0470
0.0590
0.0590
0.0600
0.0235
0.0600
0.0860
0.0850
0.0900
0.0245
0.0900
0.1580
0.1560
0.1320
0.0264
0.1360
0.3660
0.3550
0.1800
0.0275
0.1590
0.6990
0.6190
0.2740
0.0331
0.2500
0.6340
0.6940
0.3720
0.0364
0.3670
0.6670
0.7110
0.4230
0.0342
0.4200
0.5560
0.5800
0.4780
0.0325
0.4770
0.4660
0.4940
0.5690
0.0330
0.5680
0.4460
0.4620
0.6300
0.0315
0.6330
0.3950
0.4150
0.7010
0.0305
0.6950
0.3600
0.3700
0.5580
0.0213
0.5600
0.2534
0.2650
0.6450
0.0218
0.6430
0.2660
0.2740
0.6800
0.0205
0.6640
0.2220
0.2260
0.8230
0.0223
0.7970
0.2370
0.2430
0.9270
0.0227
0.9230
0.2340
0.2410
0.8970
0.0199
0.8880
0.1990
0.1990
0.9760
0.0197
0.9450
0.1930
0.1950
1.0340
0.0191
0.9910
0.1810
0.1860
1.1600
0.0197
1.1200
0.1820
0.1850
1.3020
0.0204
1.2450
0.1850
0.1840
0.8210
0.0119
0.7540
0.1190
0.1230
0.7830
0.0105
0.7410
0.1040
0.0000
0.8297
0.0104
0.7850
0.1010
0.1020
0.9709
0.0113
0.9380
0.1060
0.1060
0.9920
0.0108
0.9240
0.0920
0.1030
1.0600
0.0108
0.9900
0.0960
0.0960
30
Q of A3
1.255319
1.433333
1.755556
2.772727
3.883333
2.313869
1.793011
1.314421
0.974895
0.783831
0.626984
0.513552
0.454122
0.412403
0.326471
0.287971
0.252427
0.221851
0.197746
0.175048
0.156897
0.142089
0.144945
0.132822
0.121731
0.109177
0.092742
0.090566
32.0000
33.0000
8.3.3
1.1800
1.2700
0.0113
0.0114
1.0700
1.1400
0.0960
0.0980
0.0930
0.0960
0.081356
0.077165
Vertical Endurance Test
The endurance test (2 hours) was run at an excitation frequency of 8.0 hertz.
8.4
Side-to-Side Test
8.4.1
Side-to-Side Exploratory Test
The vibration table was excited in the side-to-side direction at discrete frequencies
ranging from 4 to 33 hertz. A mount frequency was identified at 7.0 hertz and
there were no structural resonance frequencies identified.
8.4.2 Side-to-Side Variable Frequency Test
Single amplitude results from the side-to-side variable frequency test are
summarized in the table below. A mount frequency was identified at 7.0 hertz
and there were no structural resonance frequencies identified.
Table Input
Frequency
(Hertz)
4.0000
5.0000
6.0000
7.0000
8.0000
9.0000
10.0000
11.0000
12.0000
13.0000
14.0000
15.0000
16.0000
17.0000
18.0000
19.0000
20.0000
21.0000
22.0000
23.0000
24.0000
R030701
Top
Bottom
Table
Table
Back
Right Left Side
Input
Input
Brace of
Side of
of
Amplitude
Amplitude
Fixture
Cabinet Cabinet
A1
(Inches) A2 (Gs) A3 (Gs) A4 (Gs)
A1 (Gs)
0.0476
0.0291
0.0600
0.1740
0.0850
0.0600
0.0235
0.0620
0.1090
0.0300
0.1090
0.0296
0.1030
0.1550
0.0170
0.1400
0.0280
0.1240
0.2380
0.0460
0.2200
0.0336
0.3380
0.1130
0.0360
0.3010
0.0364
0.4470
0.3120
0.3020
0.3460
0.0339
0.4430
0.3700
0.3270
0.3620
0.0293
0.4610
0.2400
0.2230
0.4680
0.0318
0.5980
0.1710
0.1930
0.5280
0.0306
0.6710
0.1610
0.1710
0.6160
0.0308
0.7880
0.1550
0.1460
0.5890
0.0256
0.8420
0.1400
0.1190
0.5570
0.0213
0.6690
0.0970
0.0850
0.5320
0.0180
0.6800
0.0810
0.0710
0.6170
0.0186
0.8711
0.0850
0.0700
0.8080
0.0219
1.0520
0.1020
0.0800
0.8310
0.0203
1.0930
0.0970
0.0690
0.8420
0.0187
1.0850
0.0910
0.0610
0.9790
0.0198
1.2800
0.1030
0.0670
0.9720
0.0180
1.2600
0.0990
0.0490
1.0740
0.0182
1.4790
0.1100
0.0450
31
Q of A3
3.655462
1.816667
1.422018
1.7
0.513636
1.036545
1.069364
0.662983
0.365385
0.304924
0.251623
0.237691
0.174147
0.152256
0.137763
0.126238
0.116727
0.108076
0.105209
0.101852
0.102421
25.0000
26.0000
27.0000
28.0000
29.0000
30.0000
31.0000
32.0000
33.0000
8.4.3
1.1870
0.7080
0.6880
0.6550
0.8610
0.7940
0.8240
0.9490
0.9700
0.0186
0.0103
0.0092
0.0082
0.0100
0.0086
0.0084
0.0091
0.0087
1.6460
1.0400
0.9890
0.9460
1.1920
1.1010
1.2230
1.4720
1.5020
0.1310
0.0870
0.0910
0.1040
0.1650
0.1190
0.1050
0.0720
0.0640
0.0400
0.0320
0.0240
0.0220
0.0510
0.0520
0.0350
0.0350
0.0220
0.110362
0.122881
0.132267
0.158779
0.191638
0.149874
0.127427
0.075869
0.065979
Side-to-Side Endurance Test
The endurance test (2 hours) was run at an excitation frequency of 7.0 hertz.
8.5
Front-to-Back Test
8.5.1
Front-to-Back Exploratory Test
Prior to the front-to-back test, the test fixture was unclamped from the vibration
table, rotated 90º, and re-secured to the table. Photograph No. 12 shows the test
setup in the rotated configuration. The vibration table was excited in the frontback direction at discrete frequencies ranging from 4 to 33 hertz. A mount
frequency was identified at 8.0 hertz and there were no structural resonance
frequencies identified.
8.5.2
Front-to-Back Variable Frequency Test
Single amplitude results from the front-to-back variable frequency test are
summarized in the table below. A mount frequency was identified at 8.0 hertz
and there were no structural resonance frequencies identified.
Table Input
Frequency
(Hertz)
4.0000
5.0000
6.0000
7.0000
8.0000
9.0000
10.0000
11.0000
12.0000
13.0000
14.0000
R030701
Top
Bottom
Table
Table
Back
Right Left Side
Input
Input
Brace of
Side of
of
Amplitude
Amplitude
Fixture
Cabinet Cabinet
A1
(Inches) A2 (Gs) A3 (Gs) A4 (Gs)
A1 (Gs)
0.0440
0.0269
0.0210
0.0570
0.0810
0.0610
0.0239
0.0810
0.1720
0.3640
0.1220
0.0332
0.1730
0.1460
0.3450
0.1580
0.0316
0.1960
0.2310
0.2950
0.1720
0.0263
0.2340
0.4500
0.1840
0.2500
0.0302
0.3390
0.3640
0.0630
0.2790
0.0273
0.3620
0.2440
0.0600
0.3170
0.0256
0.4080
0.1960
0.0640
0.3810
0.0259
0.4850
0.1730
0.0720
0.4460
0.0258
0.5540
0.1580
0.0730
0.5090
0.0254
0.6310
0.1460
0.0730
32
Q of A3
1.295455
2.819672
1.196721
1.462025
2.616279
1.456
0.874552
0.618297
0.454068
0.35426
0.286837
15.0000
16.0000
17.0000
18.0000
19.0000
20.0000
21.0000
22.0000
23.0000
24.0000
25.0000
26.0000
27.0000
28.0000
29.0000
30.0000
31.0000
32.0000
33.0000
8.5.3
0.6840
0.4980
0.5230
0.5830
0.7110
0.7960
0.7580
0.8530
0.9990
0.9930
1.1200
0.7680
0.7040
0.6760
0.8230
0.8880
0.8080
1.0200
0.9000
0.0298
0.0190
0.0177
0.0176
0.0193
0.0195
0.0168
0.0172
0.0185
0.0169
0.0175
0.0111
0.0095
0.0084
0.0096
0.0097
0.0082
0.0097
0.0081
0.8450
0.6390
0.6550
0.7480
0.9070
1.1070
0.9510
1.2070
1.2630
1.2890
1.4250
0.9860
0.9190
0.8900
1.1200
1.1900
1.0900
1.3900
1.1700
0.1480
0.0960
0.0850
0.0840
0.0910
0.0870
0.0740
0.0820
0.0840
0.0700
0.0700
0.0410
0.0350
0.0300
0.0320
0.0290
0.0200
0.0190
0.0190
0.0800
0.0550
0.0500
0.0490
0.0540
0.0530
0.0440
0.0490
0.0450
0.0390
0.0380
0.0260
0.0210
0.0180
0.0190
0.0170
0.0140
0.0160
0.0100
0.216374
0.192771
0.162524
0.144082
0.127989
0.109296
0.097625
0.096131
0.084084
0.070493
0.0625
0.053385
0.049716
0.044379
0.038882
0.032658
0.024752
0.018627
0.021111
Front-to-Back Endurance Test
The endurance test (2 hours) was run at an excitation frequency of 8.0 hertz.
9.0
VIBRATION TEST OF HF RECEIVE RACK
9.1
Test Installation of HF Receive Rack
The HF Receive rack was installed on the test fixture. The rack was mounted to
the test fixture using three mount interface plates that attached the eight
ShockTech 901D isolators to the cabinets. The 6 base isolators were bolted to the
interface plates (3 mounts per plate) with a total of 27 (9 per isolator) ¼-20 UNC
Grade 5 bolts, flat washers, lock washers, and with nyloc nuts.
The two sway brace isolators were bolted to the interface plate with a total of 12
(6 per isolator) ¼-20 UNC Grade 5 bolts, flat washers, lock washers, and with
nyloc nuts.
All three interface plates were attached to the test fixture using sixteen ½-13
Grade 5 bolts. The test fixture was clamped to the vibration table. Photograph
Nos. 16 and 17 show the installation on the table.
R030701
33
Photograph No. 16. Vertical and Side-to-Side Orientations
R030701
34
Photograph No. 17. Front-to-Back Orientation
R030701
35
9.2
Instrumentation
One accelerometer was located at the center of the vibration table to measure
table amplitudes and three accelerometers were located on the fixture or the EUT.
The locations of the gauges are listed in Table 5. Photograph Nos. 18 and 19
show the location of the test instrumentation.
Table 5. Test Instrumentation
Item
A1
A2
A3
A4
R030701
Orientation
Direction of
Excitation
Direction of
Excitation
Direction of
Excitation
Direction of
Excitation
Location
Table
Center of Back Brace on Fixture
Front Top Right Corner of CCOP Rack
Front Bottom Left Side of CCOP Rack, next to UPS
36
A3
A4
Photograph No. 18. Test Instrumentation
R030701
37
A1V
Photograph No. 19. Test Instrumentation
R030701
38
9.3
Vertical Test
9.3.1
Vertical Exploratory Test
The vibration table was excited in the vertical direction at discrete frequencies
ranging from 4 to 33 hertz. During the start of the Exploratory test the HF
Receive Rack lost 5V power. A new 5V power supply was installed and testing
was restarted. Photograph No. 20 shows the location of the 5V power supply that
was replaced. A mount frequency was identified at 8.0 hertz and there were no
structural resonance frequencies identified.
Photograph No. 20. Location of 5V Power Supply
R030701
39
9.3.2
Vertical Variable Frequency Test
Single amplitude results from the vertical variable frequency test are summarized
in the table below. A mount frequency was identified at 8.0 hertz and there were
no structural resonance frequencies identified.
Table Input
Frequency
(Hertz)
4.0000
5.0000
6.0000
7.0000
8.0000
9.0000
10.0000
11.0000
12.0000
13.0000
14.0000
15.0000
16.0000
17.0000
18.0000
19.0000
20.0000
21.0000
22.0000
23.0000
24.0000
25.0000
26.0000
27.0000
28.0000
29.0000
30.0000
31.0000
32.0000
33.0000
R030701
Top
Bottom
Table
Table
Back
Right Left Side
Input
Input
Brace of
Side of
of
Amplitude
Amplitude
Fixture
Cabinet Cabinet
A1
(Inches) A2 (Gs) A3 (Gs) A4 (Gs)
A1 (Gs)
0.0520
0.0318
0.0520
0.0650
0.0650
0.0620
0.0243
0.0640
0.0930
0.0900
0.0960
0.0261
0.0960
0.1620
0.1630
0.1240
0.0248
0.1270
0.3440
0.3340
0.1750
0.0268
0.1560
0.5280
0.5320
0.2740
0.0331
0.2500
0.6340
0.7360
0.3720
0.0364
0.3690
0.7760
0.7720
0.4210
0.0341
0.4200
0.5920
0.5910
0.5040
0.0343
0.5020
0.5080
0.5060
0.5790
0.0335
0.5660
0.4470
0.4420
0.6650
0.0332
0.6470
0.3990
0.4090
0.6970
0.0303
0.6950
0.3460
0.3570
0.4980
0.0190
0.5160
0.2470
0.2550
0.6790
0.0230
0.6570
0.2630
0.2710
0.6270
0.0189
0.6450
0.2260
0.2250
0.8290
0.0225
0.8020
0.2240
0.2310
0.9290
0.0227
0.8980
0.1960
0.2210
0.8880
0.0197
0.8630
0.1960
0.1930
0.9650
0.0195
0.9240
0.2010
0.1940
1.1100
0.0205
1.0000
0.2030
0.1970
1.1500
0.0195
1.0600
0.1920
0.1880
1.2500
0.0196
1.2300
0.2040
0.2010
0.8220
0.0119
0.7740
0.1440
0.1430
0.7780
0.0104
0.7670
0.1380
0.1380
0.8360
0.0104
0.7870
0.1360
0.1360
0.9350
0.0109
0.9057
0.1400
0.1400
0.8081
0.0088
0.9184
0.1518
0.1387
0.8275
0.0084
0.8375
0.0945
0.1070
0.9820
0.0094
0.9030
0.1100
0.1110
1.1080
0.0100
0.8920
0.0990
0.1148
40
Q of A3
1.25
1.5
1.6875
2.774194
3.017143
2.313869
2.086022
1.406176
1.007937
0.772021
0.6
0.496413
0.495984
0.387334
0.360447
0.270205
0.21098
0.220721
0.20829
0.182883
0.166957
0.1632
0.175182
0.177378
0.162679
0.149733
0.187848
0.114199
0.112016
0.08935
9.3.3
Vertical Endurance Test
The endurance test (2 hours) was run at an excitation frequency of 8.0 hertz.
9.4
Side-to-Side Test
9.4.1
Side-to-Side Exploratory Test
The vibration table was excited in the side-to-side direction at discrete frequencies
ranging from 4 to 33 hertz. A mount frequency was identified at 7.0 hertz and
there were no structural resonance frequencies identified.
9.4.2 Side-to-Side Variable Frequency Test
Single amplitude results from the side-to-side variable frequency test are
summarized in the table below. A mount frequency was identified at 7.0 hertz
and there were no structural resonance frequencies identified.
Table Input
Frequency
(Hertz)
4.0000
5.0000
6.0000
7.0000
8.0000
9.0000
10.0000
11.0000
12.0000
13.0000
14.0000
15.0000
16.0000
17.0000
18.0000
19.0000
20.0000
21.0000
22.0000
23.0000
24.0000
25.0000
26.0000
27.0000
R030701
Top
Bottom
Table
Table
Back
Right Left Side
Input
Input
Brace of
Side of
of
Amplitude
Amplitude
Fixture
Cabinet Cabinet
A1
(Inches) A2 (Gs) A3 (Gs) A4 (Gs)
A1 (Gs)
0.0510
0.0312
0.0580
0.2250
0.0980
0.0620
0.0243
0.0670
0.1340
0.0320
0.0960
0.0261
0.0930
0.1530
0.0170
0.1440
0.0288
0.1240
0.2780
0.0860
0.2290
0.0350
0.3540
0.1870
0.0540
0.2860
0.0346
0.4070
0.3240
0.3040
0.3570
0.0349
0.4690
0.3480
0.3490
0.3980
0.0322
0.5060
0.2440
0.2450
0.4860
0.0330
0.6180
0.2070
0.2140
0.5570
0.0323
0.6860
0.1760
0.1860
0.6480
0.0324
0.8030
0.1590
0.1700
0.6970
0.0303
0.8630
0.1420
0.1510
0.5060
0.0193
0.6400
0.1030
0.1070
0.6580
0.0223
0.8380
0.1150
0.1140
0.6520
0.0197
0.8320
0.0890
0.0870
0.8060
0.0219
1.0310
0.0940
0.0950
0.8960
0.0219
1.1790
0.0910
0.0900
0.8500
0.0189
1.1330
0.0820
0.0780
0.9220
0.0186
1.2290
0.0860
0.0730
1.0890
0.0201
1.4170
0.0950
0.0760
1.0740
0.0182
1.4800
0.1010
0.0620
1.1940
0.0187
1.6410
0.1090
0.0590
0.7710
0.0112
1.0800
0.0770
0.0360
0.7200
0.0097
1.0300
0.0550
0.0330
41
Q of A3
4.411765
2.16129
1.59375
1.930556
0.816594
1.132867
0.97479
0.613065
0.425926
0.315978
0.24537
0.20373
0.203557
0.174772
0.136503
0.116625
0.101563
0.096471
0.093275
0.087236
0.094041
0.09129
0.09987
0.076389
28.0000
29.0000
30.0000
31.0000
32.0000
33.0000
9.4.3
0.7500
0.8550
0.7790
1.0160
1.1400
1.0180
0.0094
0.0100
0.0085
0.0103
0.0109
0.0091
1.0740
1.1800
1.5200
1.1430
1.6600
2.0100
0.0440
0.0400
0.0390
0.0270
0.0230
0.0830
0.0280
0.0330
0.0340
0.0330
0.0350
0.0600
0.058667
0.046784
0.050064
0.026575
0.020175
0.081532
Side-to-Side Endurance Test
The endurance test (2 hours) was run at an excitation frequency of 7.0 hertz.
9.5
Front-to-Back Test
9.5.1
Front-to-Back Exploratory Test
Prior to the front-to-back test, the test fixture was unclamped from the vibration
table, rotated 90º, and re-secured to the table. Photograph No. 17 shows the test
setup in the rotated configuration. The vibration table was excited in the frontback direction at discrete frequencies ranging from 4 to 33 hertz. A mount
frequency was identified at 8.0 hertz and there were no structural resonance
frequencies identified.
9.5.2
Front-to-Back Variable Frequency Test
Single amplitude results from the front-to-back variable frequency test are
summarized in the table below. A mount frequency was identified at 8.0 hertz
and there were no structural resonance frequencies identified.
Table Input
Frequency
(Hertz)
4.0000
5.0000
6.0000
7.0000
8.0000
9.0000
10.0000
11.0000
12.0000
13.0000
14.0000
15.0000
16.0000
17.0000
R030701
Top
Bottom
Table
Table
Back
Right Left Side
Input
Input
Brace of
Side of
of
Amplitude
Amplitude
Fixture
Cabinet Cabinet
A1
(Inches) A2 (Gs) A3 (Gs) A4 (Gs)
A1 (Gs)
0.0490
0.0300
0.0240
0.0650
0.0860
0.0620
0.0243
0.0600
0.1940
0.3480
0.1310
0.0356
0.1840
0.1750
0.4010
0.1680
0.0336
0.2030
0.3340
0.3240
0.1860
0.0284
0.2760
0.6550
0.2050
0.2660
0.0321
0.3840
0.4810
0.0800
0.3060
0.0300
0.4170
0.3160
0.0770
0.3420
0.0277
0.4610
0.2460
0.0710
0.4160
0.0283
0.5500
0.2270
0.0790
0.4770
0.0276
0.6310
0.2020
0.0780
0.5440
0.0272
0.7390
0.1940
0.0770
0.7250
0.0315
0.9830
0.2070
0.0770
0.4680
0.0179
0.6800
0.1310
0.0540
0.6380
0.0216
0.8900
0.1510
0.0600
42
Q of A3
1.326531
3.129032
1.335878
1.988095
3.521505
1.808271
1.03268
0.719298
0.545673
0.42348
0.356618
0.285517
0.279915
0.236677