II
RFL Electronics Inc..
PRODUCT INFORMATION
RFL 9850 TX Programmable FSK Tone Transmitter
.-------- NOTE -----,----,
The RFL 9850 TX requires the use of the
RFL 9800 DSP Programmer to set its operating
parameters. Before attempting to program the
RFL 9850 TX for the first time, be sure to fully
read the programming instructions starting on
page 4 of this Instruction Data Sheet. Additional
information on the RFL 9800 DSP Programmer
can be found in its Instruction Data Sheet
(Publication No. ID 103000).
DESCRIPTION
The RFL 9850 TX (Fig. 1) is a fully-programmable FSK
tone transmitter. It can be programmed to operate on
any standard center frequency from 300 Hz to
3200 Hz, with frequency shifts up to 300 Hz and at
speeds up to 600 baud (2F operation only). The
RFL 9850 TX uses Digital Signal Processing (DSP) tech­
niques to replace the discrete oscillators, modulators,
and filters normally used in FSK transmitters.
The RFL 9850 TX's operating characteristics can be
changed by using the hand-held RFL 9800 Programmer
to modify the software. This means its operating
characteristics cannot be modified by unauthorized
personnel.
0 RTS
0 CTS
0 SP IN
0 MK IN
@HI
C OUT
©) LO
0
0
0
O
0
0
0
0
0
0
0
0
0
0
98 TX
SPECIFICATIONS
As of the date this Instruction Data Sheet was pub­
lished, the following specifications apply to the
RFL 9850 TX Programmable FSK Tone Transmitter.
Because all RFL products undergo constant refinement
and improvement, these specifications are subject to
change without notice.
RFL 9850 TX
February 3, 2000
Figure 1. RFL 9850 TX Programmable FSK Tone Transmitter
Transmit Carrier Frequency: 300 to 3200 Hz, adjus­
table in 1-Hz steps.
Transmit Bandwidth: Can be set to 50, 60, 85, 120,
240, 300, or 600 Hz.
RFL Electronics Inc.
(973) 334-3100
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
· . ·
Harmonic Content: 50 dB below carrier, at a carrier
level of -10 dBm.
Spurious Signals At Adjacent Channels: 40 dB
below carrier.
Spectral Purity:
Transmit Output Level: Adjustable from -40 dBm to
O dBm in 0.25-dB steps.
NOTE-----The output level reading on the programmer is
only an approximation; it is typically 2 dB below
the actual reading. Accurate settings will require
the use of an external instrument to measure
output levels.
Transmit MARK Polarity: Can be set to either high or
low frequency. (See PROGRAMMING section of this
Instruction Data Sheet for more information.)
Visual Indicators: LED indicators on front panel for
MARK IN, SPACE IN, and RS-232 signals RTS and
CTS.
Distortion: Less than 7 percent when operating within
the stated carrier frequency range, bandwidth, and
baud rate limits.
Environmental Requirements:
Operating Temperature: -30°C to +70°C (-22°F to
+158°F).
Relative Humidity: 95% maximum, non-condensing
@ 40°C.
Frequency Characteristics: See Table 1.
Table 1. Frequency characteristics,
RFL 9850 TX Programmable FSK Tone Transmitter
Baud Rate
Freq. Shift
Bandwidth
Remarks
so
.t.25
so
Slow-speed control spacing
S0/60r75
.±30
60
CCITT R.35 and control spacing
85/110
±42.5
85
43A1/Western Electric Telegraph
100/120
.±60
120
240-Hz spacing (CCITI R.37)
200/300
.±120
240
480-Hz spacing (CCITT R.38A)
.t.1so
300
.t.300
600
300
600
I
I
Input Power Requirements:
+5-Volt Supply: 225 mA typical; add 100 mA when
using RFL 9800 DSP Programmer.
+15-Volt Supply: 40 mA typical.
-15-Volt Supply: 25 mA typical.
Dimensions:
a Single-Euro (3U) chassis.
600-Hz spacing
1200-Hz spacing
INSTALLATION
Keying Modes:
Before the RFL 9850 TX can be placed in service, it
must be installed in a chassis. Installation involves in­
serting an VO module into the rear of the chassis, con­
necting all signal and power wiring to the VO module,
checking the settings of all jumpers, and inserting the
module into the front of the chassis.
Two-Frequency (2F): Available at all bandwidths, at
speeds up to 600 baud.
Three-Frequency (3F): Available at all bandwidths
up to 120 Hz, at speeds up to 120 baud.
Input Keying: RS-232C, MIL-STD-188, TTL, CMOS,
dry contact, or isolated keying loop.
Wiring assignments for the two different 1/0 modules
that can be used with the RFL 9850 TX are given in
Figures 2 and 3. Figure 4 shows the location of all con­
trols and indicators used during installation and opera­
tion of the RFL 9850 TX; these controls and indicators
are described in Table 2.
Output Impedance: Strap-selectable, 600Q nominal
or 60,000Q minimum, isolated and balanced.
Clear-To-Send Delay: Programmable from 5 ms to
255 ms in 1-ms increments.
The following instructions are provided for installing
RFL 9850 TX modules into existing systems; if the
module was included as part of a system, installation
was done at the factory. Before attempting installa­
tion, you must know the module slot in the chassis the
RFL 9850 TX will be installed in. Proceed as follows:
Carrier Level: Adjustable from -40 dBm to O dBm in
0.25-dB increments. Variation is less than 1.0 dB
over full temperature range and power supply
variation.
RFL 9850TX
February 3, 2000
25.4 mm wide x 128 mm high
x 248 mm deep; occupies six horizontal units (6E) in
2
RFL Electronics Inc.
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
(973) 334-3100
1.
2.
Make sure that both retaining screws on the
cable connector are fully tightened, to keep the
connectors from coming apart.
Insert the VO module into the chassis from the
rear of the chassis, in the slot where the
RFL 9850 TX module is to be installed. Push the
VO module all the way into the chassis, and then
use a flat-blade screwdriver to turn the two
quarter-turn fasteners to secure the 1/0 module in
place.
Two different 1/0 modules can be used
with the RFL 9850 TX:
Description
.BEL.flN
RS-232 1/0 Module
19-Point Data 1/0 Module
102015
102065
The following RS-232 lines are supported by the
RFL 9850 TX; all unlisted lines are not connected:
Signal
Name
GND
TxD
RTS
CTS
COM
Connect all power and signal wiring to the 1/0
module, using the information listed below for
the VO module you are using:
Pin
Number
Description
1
Chassis Ground
Transmit Data
Request To Send
Clear To Send
Signal Ground
2
4
5
7
19-Point Data 1/0 Module {P/N 102065):
Wiring assignments for the 19-Point Data VO
Module are shown in Figure 4. Make sure all
screws on terminal block TB 1 are fully tightened
once the wires are inserted.
RS-232 1/0 Module: Wiring assignments for the
RS-232 Module are shown in Figure 2. Make sure
all screws on terminal blocks TB 1, TB2, and TB3
are fully tightened once the wires are inserted.
RFL 102065
COM
l
RFL 102015
+SY IN
+1SY IN
-15V IN
2
3
"
TBl
COM
+SY IN
+1SV IN
-1SY IN
5
6
7
8
9
10
GND --.....----1-+-<1
T xD --.....----1-.0
11
RTS --.....----1--j...<')
CTS --.....----1--j...<')
RTS
12
CTS
13
COM --.....----1--j...<')
S KEY
H
M KEY
15
16
17
18
19
COM
TBl
} TONE OUT
GND
3
TB2
3
TB3
Figure 3. Wiring assignments for RFL 9850 TX modules
using the RFL 102065 19-Point Data1/0 Module
3.
F_igure 2. Wiring assignments for RFL 9850 TX modules
using the RFL 102015 RS-2321/0 Module
The DB-25 connector at the center of the RS-232
VO Module will accept any standard RS-232
cable. Align the wide side of the connector on the
cable with the wide side of the connector on the
110 module and push the connectors together.
RFL 9850 TX
February 3, 2000
3
Check the setting of two-position jumper J2. (See
Figure 4 for location.)
J2 is set at the factory to position "C" if
a Type 27C32 device is being used for
U3, or position "D" for a Type 27C64
device. Do not change the setting unless
the device type is changed in the field.
RFL Electronics Inc.
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
(973) 334-3100
4.
Once the resistance Value has been calculated, the fol­
lowing formula is used to determine the proper wat­
tage value:
Check the setting of two-position jumper J3. (See
Figure 4 for location.)
J3 determines the source of the RTS
(Request To Send) signal. Set J3 to posi­
tion 11 E 11 to use an externally-generated
RTS signal; to use the RTS signal genera­
ted on the RFL 9850 TX itself, set J3 to
position "F".
5.
PRs
where
PRs
Rs
Check the setting of two-position jumper JS. (See
Figure 4 for location.)
PRs
115.25
0.025
0.025
- 461 O ohms (4.61 KO)
= 461 Ox 0.0009375 = 4.32 watts
PROGRAMMING
Once the RFL 9850 TX has been installed in the chassis,
it must be programmed by using the following proce­
dure. This procedure can also be used to re-program
the RFL 9850 TX any time a change in operating
parameters is desired. An RFL 9800 DSP Programmer is
required to do the programming. By only giving
authorized personnel access to the programmer, all the
RFL 9850 TX's operating parameters can be set and
unauthorized personnel cannot change them.
Push the RFL 9850 TX module all the way into the
front of the chassis, and then use a flat-blade
screwdriver to turn the two quarter-turn fasteners
to secure the module in place.
The RFL 9850 TX is now installed.
CALCULATING SERIES RESISTOR VALUES
FOR THE ISOLATED INPUT KEYING OPTION
--����-NOTE
When the RFL 9850 TX is equipped with the isolated
input keying option, the MARK IN, SPACE IN, and RTS
inputs are fed through optical isolators. These isolators
normally require de input voltages between 5 and
1O volts for proper operation; they are equipped with
current limiting resistors and clamping diodes for
protection against reversed input polarities. If keying
input voltages higher than 15 volts are to be used, ad­
ditional resistance must be added to the keying input
lines external to the chassis. The following formula is
used to determine the proper series resistance:
During most programming steps, the [INCR]
and [DECR] keys will change the parameter
number; during dynamic set steps, they will
affect the programmed YfilY..e. Parameters
may be stepped (rather than entered) with
these keys.
The following procedure is used to check the settings of all
programmable parameters and change them if necessary.
Tables 3 and 8 list all the parameters programmed
Ea - 9.75
during this procedure, and the entries that are valid for
each parameter. Perform all steps in the order
presented, unless directed otherwise; expected results
and/or comments are indented and appear in
boldface type.
0.025
where
RMs = Series resistance in ohms.
EA = Applied de input voltage (up to 1500 Vdc).
RFL 9850 TX
February 3, 2000
125 - 9.75
A 4.59KQ or 4.64KQ resistor should be used in series
with this keying input. It should be rated for at least
4 watts.
Check for the presence of factory testing
jumpers J7, J8, and J9. (See Figure 4 for location.)
J7, JS, and J9 are removed during factory
testing. They must be in place before
the RFL 9850 TX can be placed in service.
7.
= Series resistor power rating in watts.
= Series resistance calculated with first formula.
Example: For a keying voltage of 125 Vdc.
JS selects the terminating resistor for
TONE OUT transformer T2. Set JS to
position "K" to select a 600Q termina­
tion; to use T2 with its primary unter­
minated, set JS to position "L".
6.
= R5 x 0.0009375
1.
4
Make sure the power supply in the chassis hous­
ing the RFL 9850 TX is turned on (POWER switch
in the ON position).
RFL Electronics Inc.
(973) 334-3100
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
2.
Plug. the RFL 9800 DSP Programmer's ribbon
cable into the mating connector at the front of
the RFL 9850 TX.
3.
10. Using the keypad, enter the desired Clear-ToSend delay.
This is the amount of time in mil­
liseconds between the detection of a
Request-To-Send (RTS) signal and the
activation of the CTS output; it can be
set to any value between 0005 (5 ms)
and 0255 ( 255 ms).
Note the status of the programmer's display.
The parameter
display should read
"TXBW" (Transmitter Bandwidth), fol­
lowed by a four-digit number in the
variable display. If it doesn't, press the
[RESET] key.
4.
11. Press the [ENTER] key.
The parameter display will read "TXMP ..
(Transmit MARK Polarity), followed by a
four-digit number.
Using the programmer's keypad, ·enter the
desired transmitter bandwidth.
Valid choices are as follows:
0050- 50 Hz
0060 • 60 Hz
0085• 85 Hz
0120- 120 Hz
02 40-240 Hz
0300- 300 Hz
0600• 600 Hz
5.
6.
12. Using the keypad, enter the value for the desired
transmit MARK pola.rity value.
The transmitter section has two data in­
puts: MARK IN and SPACE IN. Both are
used during 3F operation; only MARK IN
is used for 2F operation. The TXMP
parameter controls how the RFL 9850 TX
will respond to various MARK IN/SPACE
IN input level combinations.
Press the [ENTER] key.
The parameter display will read "TXCF"
(Transmit Carrier Frequency), followed
by a four-digit number.
Valid settings for this parameter are
0000 and 0001. Table 4 lists how the
RFL 985 0 TX will respond to each of
these settings. For either setting, the
MARK IN and SPACE IN indicators on the
front panel will light when a logic one is
present at the input; they will go out
when a logic zero is present.
Enter the desired transmit carrier (center) frequency using the keypad.
The transmit carrier frequency can be
any frequency between 300 Hz and
32 00 Hz that is compatible with the
selected transmit channel bandwidth.
For example, if the bandwidth was set
to 300 Hz during step 4, the carrier fre­
quency cannot be set to 400 Hz; this
would result in a low frequency of
2 50 Hz, which is beyond the range of
the RFL 985 0TX.
7.
8.
Table 3. Valid entries for the TXMP parameter
In put Status
Press the [ENTER] key.
Using the programmer's keypad, select the
desired transmitter mode of operation.
SPACE IN
0000
0001
2F
HI
...
LF
HF
LO
...
HF
LF
HI
HI
CF
CF
LO
LF
HF
HI
HF
LF
LO
CF
CF
HI
LO
LF
CF
HF
Press the [ENTER] key.
The parameter display will read 11 CTSD 11
(Clear-To-Send Delay), followed by a
four-digit number.
RFL 9850TX
February 3, 2000
MARKIN
LO
Valid choices are as follows:
0002 - 2F operation
0003- 3F operation
9.
Mode
3F
The parameter display will read "TXMD"
(Transmit Mode Of Operation), followed
by a four-digit number.
NOTE:
6
TXMP Setting
=
=
=
=
=
Input at logic high level.
Input at logic low level.
Output at low frequency.
Output at center frequency (3F only).
Output at high frequency.
Not used.
MARK IN is always used; SPACE IN is only used during
3F operation. If MARK IN and SPACE IN are both low,
the center frequency will be produced.
RFL Electronics Inc.
(973) 334-3100
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
READ-ONLY ---­
MEMORY
EEPROM
(ROM)
TO/FROM
PR��:=�� 4-------------------91
CALIBRATOR
TRANSMITTER
GAIN
CONTROL
KICROCONTROLLER ---94 nrri�
ACE
DIGITAL
SIGNAL
PROCESSOR
(DSP)
EPROMS
0/A
CONVERTER
DIGITALLY­
CON'l'ROLLEO
POTENTIOMETER
SIGNAL
CONOI'l'IONER
LOW-PASS
(RECONSTRUCTION)
FILTER
Figure 5. Block diagram, RFL 9850 TX Programmable FSK Tone Transmitter
Basic Operating Modes
While in this mode, the parameter value will flash on
the programmer's display. By pressing the [INCR] and
[DECR] keys on the programmer, the transmitter out­
put level can be changed to any value between
-40 dBm and O dBm. Each time the [INCR] or [DECR]
keys are pressed, the output level will change by
0.25 dB; holding a key down will cause the level to
change in 0.25-dB steps until the key is released.
The RFL 9850 TX has two basic operating modes: the
normal operating mode (RUN), and the Transmitter Set
Mode (TXST).
Normal Operation (RUN Mode): During normal
operation, the transmitter section continuously
monitors the MARK, SPACE, and RTS inputs. These in­
puts are used to control the output frequency of a
waveform generator located in the DSP microcom­
puter. The output of the waveform generator is sub­
jected to a sine conversion routine, and then a filter
routine.
Once the desired output level is displayed, the user
presses the [ENTER] key to store the new value in the
programmer's RAM memory.
Input Sampling
The resultant filtered sine wave is multiplied by a con­
stant to set the fine output level. The DSP microcom­
puter periodically sends the sine wave to a digital-to­
analog (DIA) converter; this sampled sine wave is
smoothed by an analog reconstruction filter before
being passed to a digitally-controlled attenuator,
where coarse level adjustments are made. The signal
then goes to a voltage-to-current converter, which is
used to drive the line.
II
The transmitter section's sampling period is 128 µs.
MARK, SPACE, and RTS inputs are received by three
line receivers in quad RS-232 line receiver U22. Op­
tional pull-up or pull-down resistors allow the user to
tailor the input voltage threshold levels to the voltages
that are present at the installation. This forms the data
input interface (INTFIN). In a two-frequency mode of
operation (2F), microcontroller U14 samples the MARK
input four times during every sampling period, or once
every 32 µs; the RTS line is sampled once every sam­
pling period, and the SPACE line is ignored. All data
input lines are checked once every sampling period
during
three-frequency
(3F)
operation.
The
microcontroller assembles these data samples into a
data byte.
II
Current drive allows several channels to be mixed onto
a single line without isolating filters. The line must be
terminated with a 600Q resistor to develop the proper
voltage.
Transmitter Set Mode (TXST): The transmitter set
mode allows the user to activate the transmitter sec­
tion of the RFL 9850 TX and vary its output level.
RFL 9850 TX
February 3, 2000
8
RFL Electronics Inc.
(973) 334-3100
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
Digital Signal Processing
At the beginning of each sampling period,
microcontroller U14 requests the attention of digital
signal processor U13 and informs it of the status of all
the data input lines. U13's operating program incre­
ments the oscillator phase, according to the state of
the MARK and SPACE bits. An algorithm converts the
phase into the digital equivalent of a sine wave. This
sine wave passes to a filter algorithm; the output of
this algorithm is multiplied by a constant which con­
trols the transmitter output level.
DIA Conversion And Filtering
The processed digital FSK signal is transferred back to
U14 at the start of the sampling period as two bytes.
U14 massages the bits in this signal and transfers them
as serial data to the D/A converter input of CODEC
U15. The anaiog output of U15 is a stepped wave; it is
smoothed by a switched-capacitor low-pass filter in
U8.
The output of this filter is passed through digitally­
controlled potentiometer U7, which provides a coarse
signal-level adjustment. The signal then passes to a
bandpass filter in U8. This second filter removes addi­
tional spurious tones.
If U14 finds that the programmer is not present, it
goes to a setup routine, which initializes U 14 and digi­
tal signal processor U13. Once both devices are initial­
ized, U14 obtains the system operating parameters
from U3. These parameters control coefficients and
branching within U14 and U13; the parameters that
control U13 are passed from U14 to U 13 over their
direct interface. After the parameters are distributed,
some additional initialization steps are performed, and
then the module enters the RUN mode, where it will
remain until reset.
If U14 finds that the programmer is connected to the
programmer port, it initializes for programming, trans­
fers U3's contents to the programmer, and enters a
loop to wait for instructions from the programmer.
The user can then use the programmer to view all the
parameter settings, and change them if necessary. The
RFL 9850 TX is idled during programming; when
programming is completed, U14 accepts the new set
of parameters from the programmer and writes them
into U3. U14 then distributes the new parameters to
itself and U13, and enters the RUN mode using the
new parameters. If further programming needs to be
done, the programmer can regain the attention of U14
by issuing a hardware reset; this is done when the user
presses the [RESEn key in the keypad.
r------- NOTE ----___,
Throughout the following software description,
signal names appear in CAPITAL letters. Inverted
or active-low signals are indicated by an asterisk
after the signal name (WR*, BIO*, etc).
Voltage-To-Current Conversion
The voltage output of U8 is applied to the input of
operational amplifier U9. U9 acts as a voltage-to­
current converter to produce the current used to drive
the line.
U9 has a compliance of ±9 volts, which means that
signals with a combined power of up to 18 dBm can
be mixed on a 600Q line, assuming that the carrier
level is less than O dBm. The output is coupled to the
line by coupling transformer T2.
Programmability
SOFTWARE DESCRIPTION
The heart of the RFL 9850 TX is digital signal processor
U13, which is under the control of microcontroller
U14. U14 controls all timing functions and all data
transfers into and out of U13. Timing synchronization
is achieved by activating U13's BIO* input (pin 9). Data
is passed from U14 to U13 as eight-bit bytes; U13
combines these bytes into 16-bit words.
Programmability is provided by U3, which is a non­
volatile Electronically Erasable Programmable Read­
Only Memory (EEPROM). When the RFL 9850 TX is first
turned on, microcontroller U14 interrogates the
programmer port to check whether the RFL 9800 DSP
Programmer is connected to the module.
RFL 9850 TX
February 3, 2000
Power-Up Reset
At power-up, U14 receives a hardware reset, and it
sends a reset to U13. U13 then sends an identification
code back to U14. This code informs U 14 of the cur­
rent hardware and software environment; it needs this
information because its operating software contains
code for several modules in the 9800 Series, and it
9
RFL Electronics Inc.
(973) 334-3100
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
must know which code to use. If the RFL 9800 DSP
Programmer is connected to the RFL 9850 TX and the
RFL 9850 TX is not running, U14 sends a "keep-alive"
code to U13. U13 will then enter a loop and wait for a
reset from U14. U14 resets U13 at regular intervals, in­
itiating the "READ" operation that strobes U13's DEN
output (pin 32). This prevents the watchdog timer
from resetting the module.
the data registers that Will be used during the RUN
mode of operation. Data memory locations containing
constants needed for running are re-initialized, and
U13 proceeds to the RUN phase of its program code.
When the RFL 9850 TX enters the RUN mode or one of
the four dynamic set modes controlled by the
RFL 9800 programmer, U14 reads the data stored in
EEPROM U3 and sends U13 the data it needs to
operate. U13 stores each byte of data in its memory
and echoes it back to U14. If the echo is not valid, U14
will reset U13 and start the data transfer again. Once
all the data has been successfully transferred (with
valid echoes), U13 starts the initialization phase of its
program code.
Synchronizing BIO* signals initiate the exchange of
information between microcontroller U14 and digital
signal processor U 13 (the DSP). During each sampling
period, two pieces of information are exchanged: the
transmitter output level into CODEC U15, and the ter­
minal input vectors that contain information on data
and carrier status.
Microcontroller-To·DSP
Data Exchange
Transmitter Control
In its initialization pha�e, U13 loads a set of constants
into its memory and then computes and saves the
phase increment values needed for the desired center,
MARK, and SPACE frequencies; if the 2F transmit
mode has been selected, the center and SPACE fre­
quency phase increments are equal. These phase incre­
ments represent the amount by which the phase of the
FSK oscillator will advance for each quarter of the sam­
pling period. U13 then determines the filter coeffi­
cients required by the transmit bandpass filter, and
loads them into data memory. The bandpass filter has
an equiripple group delay in its passband to minimize
pulse distortion. Its primary function is to limit the
sideband energy of the FSK carrier that would fall into
adjacent channels; the frequency spectrum of the
keyed carrier is kept well within CCITI limits.
The running code begins with the computation of the
FSK oscillator frequency for the transmitter section.
The basic DSP sampling period is 128 µs; for high­
speed data (such as 600 baud, where the period of
one bit is 1667 µs), discrepancies caused by the fixed
sampling times could amount to nearly 8 percent of a
data bit; this would produce excessive jitter in the data
stream. To keep jitter within acceptable limits, U14
samples the input data status four times every sam­
pling period. The terminal input vector passed to U13
indicates data status for each quarter of the previous
sampling period, and U13 uses this information to
make any required adjustments to the phase increment
of the FSK oscillator. The generated phase ramp is es­
sentially a triangular wave, which is converted into a
sinewave by an algorithm and then passed through a
bandpass filter. The conversion to a sine wave
eliminates distortion products which might otherwise
alias back into the filter passband.
The transmitter gain factor is then computed, based on
the dB values entered by the user using the RFL 9800
programmer. After the gain factor is computed, U13
computes a few more running parameters and clears
After filtering, the amplitude of the FSK signal is fine­
adjusted in quarter-dB steps; coarse adjustment is a
hardware function performed by digitally-controlled
potentiometer U7.
Initialization
RFL 9850 TX
February 3, 2000
10
RFL Electronics Inc.
(973) 334-3100
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
Table 5. Replaceable parts, RFL 9850 TX Programmable FSK Tone Transmitter
Assembly No. 103170
Circuit Symbol
(Figs. 8 and 9)
Description
(1,8,9,17
Capacitor,ceramic,0.1µF,GMV,SOV,Centralab CY20C104P or equiv.
(2,3,10-12,18-20,22-24,33,34
Not used.
(4
Capacitor,X7R ceramic,0.056µF,10%,SOV.AVX SA205C563KAA or equiv.
0130 55631
Capacitor,ceramic,47pF,5%, 100V,AVX SA101A470JAA or equiv.
0125 14705
(6
Capacitor,ceramic,1µF,10%,50V,Type CK06
0110 6
C7,25-29,31-32,35,37-39
Capacitor,X7R ceramic,0.1µF,10%,SOV,AVX SA305C104KAA or equiv.
0130 51041
Part Number
CAPACITORS
cs
1007 1366
(13,16
Capacitor,tantalum,22µF,20%,16V,Sprague 1990226X0016DB1 or equiv.
1007 1569
(14,15
Capacitor,tantalum,6.8µF,20%,25V,Sprague 196D685X0025JA1 or equiv.
1007 1669
(21
Capacitor,X7R ceramic,330pF,10%,100V,AVX SA101C331KAA or equiv.
0130 13311
(30,36
Capacitor,tantalum,4.7µF,20%,20V,Kemet T3228475M020AS or equiv.
1007 711
(40,41
Capacitor,ceramic,27pF,5%,100V,AVX SR151A270JAA or equiv.
1007 1638
(42,43
Capacitor,ceramic,27pF,5%,100VAVX SA101A270JAA or equiv.
0125 12705
RESISTORS
R1,2,4,5,13, 15,16,20-25
Not used.
R3
Resistor.metal film,402Q,1%, 1/4W, Type RN1/4
0410 1250
R6
Resistor,metal film,1 OOKQ,1%,1/4W, Type RN1/4
0410 1480
R7,8
Resistor,metal film,2.8KQ,1%,1/4W, Type RN1/4
0410 1331
R9
Resistor,composition,5.1Q,5%,1/4W, Allen-Bradley CB Series or equiv.
1009 932
R10
Resistor,metal film,5.11MQ,1%,1/4W,Mepco/Electra SPR5053YL5M110F or equiv.
1510 2024
R11
Resistor,metal film,30.1Q,1%,1/4W,Type RN60D
1510 877
R12
Resistor.metal film,1KQ,1%,1/4W, Type RN1/4
0410 1288
R14,17
Resistor.metal film,1.SKQ,1%,1/4W, Type RN1/4
0410 1305
R18
Resistor.metal film,604Q, 1%,1/4W, Type RN1/4
0410 1267
R19
Resistor,metal film,20.SKQ, 1%,1/4W, Type RN1/4
0410 1414
R26-31
Resistor,metal film, factory-selected value
Contact factory
0410 1388
R29
Resistor.metal film,11KQ,1%,1/4W, Type RN1/4
R32
Resistor,metal film,274Q,1%,1/4W, Type RN1/4
0410 1234
RZ1
Resistor network.seven 680Q 1% resistors,1W total,8-pin SIP,
Bourns 4308R-101-681 or equiv.
98448
RZ2
Resistor network,three 10KQ 2% resistors,0.75W total,6-pin SIP,
Bourns 4306R-102-103 or equiv.
98446
RZ3
Resistor network.four 1OOKQ 2% resistors, 1.0 W total,8-pin SIP,
Bourns 4308R-102-104 or equiv.
32624
RZ4
Resistor network.four 5.6KQ 2% resistors,1W total,8-pin SIP,
Bourns 4308R-102-562 or equiv.
30263
SEMICONDUCTORS
CR1,2,7-10,12-14
Not used.
CR3-5,11
Diode,silicon,1N914B or 1N4448
26482
CR6
Diode,Zener,3.3V,5%,400mW,1N746A
18760
RFL 9850 TX
February 3, 2000
11
RFL Electronics Inc.
(973) 334-3100
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
Table 5. Replaceable parts, RFL 9850 TX Programmable FSK Tone Transmitter"'. continued.
Circuit Symbol
(Figs. 8 and 9)
Description
CR15
Transient suppressor,5.8 WVdc,600W,General Instrument P6KE6.8A or equiv.
30694
CR16,17
Diode.Zener,17V,10%,500mW,D0-35 case,1N5247
98447
CR18,19
Diode,Zener,2.4V,5%,500mW,D0-7 case,1N5221B
40476
DS1-4
Light-emitting diode,red,right-angle PC mount.Hewlett-Packard HLMP-5030
or equiv.
98534
Q1
Transistor,PNP,T0-92 case,2N3905
21564
Q2,3
Transistor,NPN,T0-92 case,2N3903
21562
U1,4-6,10
Not used.
U2
MOS 4-stage binary ripple counter,14-pin DIP.Motorola MC74HC93N or equiv.
0615 305
Part Number
SEMICONDUCTORS - continued.
U3
EPROM,factory-programmed
Contact factory
U7
MOS digitally-controlled potentiometer,8-pin DIP,Xicor X9104P or equiv.
0615 295
U8
MOS PCM transmit/receive filter,16-pin DIP.Samsung KT3040JML or equiv.
0615 352
U9
Linear operational amplifier,JFET input,8-pin DIP.Texas Instruments TL081IP
or equiv.
0620 228
U11
MOS octal tri-state D-type flip-flop,20-pin DIP.Motorola MC74HC574N or equiv.
0615 298
U12
MOS 8-bit latch/3-to-8 line decoder, 16-pin DIP,
National Semiconductor MM74HC259N or equiv.
0615 288
U13
MOS digital signal processor,40-pin DIP.Texas Instruments TMS320C 1ONL or equiv.
0615 300
U14
MOS microcontroller,40-pin DIP.Intel D87C51 or equiv.
0615 299
U15
Serial 13-bit linear CODEC,16-pin DIP.Motorola MC145402 or equiv.
0625 19
U16
MOS quad line driver,14-pin DIP.National Semiconductor OS14C88N or equiv.
0615 302
U17
MOS octal tri-state non-inverting buffer/line driver,20-pin DIP,
National Semiconductor MM74HC541N or equiv.
0615 297
U18
MOS timer,8-pin DIP.General Electric/lntersil ICM_75551PA or equiv.
0615 328
U19
MOS quad buffer/line driver,14-pin DIP,Signetics 74HC125N or equiv.
0615 292
U20
MOS quad 2-input NAND gate, 14-pin DIP.Motorola MC74HC132N or equiv.
0615 306
U21
Transistor array,Darlington,high-voltage,high-current,16-pin DIP,
Texas Instruments ULN2004AN or equiv.
0720 1
U22
Linear quad line receiver, 14-pin DIP.Motorola MC1489P or equiv.
0620 184
U23
linear voltage regulator,-5-volt,3-terminal T0-92 package,
National Semiconductor LM79l05ACZ or equiv.
0620 210
...
Shorting bar.single.Molex 90059-0009 or equiv.
T1
Not used.
T2
Transformer.telephone coupling,600Q,-45 to +7 dBm,
Pan-Magnetics International TTC-02 or equiv.
96962
Y1
Crystal,quartz,20.0 MHz
99215 4
Y2
Crystal,quartz,12.0 MHz
99215 3
MISCELLANEOUS COMPONENTS
RFL 9850 TX
February 3, 2000
3100
12
98306
RFL Electronics Inc.
(973) 334-
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
Table 6. Replaceable parts, isolated input keying option
Assembly No. 103171
Circuit Symbol
(Figs. 8 and 9)
Description
Part Number
CR101-103
Diode,silicon,1N914B or 1 N4448
26482
R101-103
Resistor,composition,390Q,5%,1W,Allen-Bradley GB Series or equiv.
1009 323
R104-106
Resistor,metal film,1.21 KQ, 1%,1/4W, Type RN1/4
0410 1296
U101
Optical isolator/logic driver,16-pin DIP,litronix ILQ-74 or equiv.
49467
Table 7. Replaceable parts, RFL 102015 RS-2321/0 Module
Assembly No. 102015
Circuit Symbol
(Fig. 6)
Description
Part Number
R1,2
Resistor,factory-selected value
Contact factory
R3
Resistor,metal film,3.01 KQ, 1%,1/4W, Type RN1/4
0410 1334
Table 8. Parameter numbers, parameter codes, and valid entries for RFL 9850 TX modules
#
Code
Meaning
Valid Entries <
1
TXBW
Transmit Bandwidth (Hz)
0050,0060,0085,0120,0240,0300,or 0600.
2
TXCF
Transmit Carrier Freq. (Hz)
Any frequency where MARK and SPACE frequencies will both be
between 300 Hz and 3200 Hz. (See Table 1 for more information). <2>
3
TXMD
Transmit Mode Of Operation
0002 (2F) or 0003 (3F)
4
CTSD
Clear To Send Delay (ms)
Any value from 0005 (5 ms) to 0255 (255 ms).
5
TXMP
Transmit MARK Polarity
See Table 3.
6
TXLV
Transmit Level (-dBm)
Any value between 0000 (0 dBm) and 4000 (-40 dBm) in 0.25 dB
increments.
7
RUN
Run Mode
No data entry; press the [ENTER] key to transfer data from programmer
to RFL 9850 TX/RX and return RFL 9850 TX/RX to the RUN mode.
8
TXST
Transmitter Set Mode
Use [INCRJ and {DECR] keys to change output level; press [ENTER] key
to store.
1>
1.
Press the [ENTER] key after the desired value is displayed. "ERR*" will appear on the display if the entered value is not
valid.
2.
The transmit carrier frequency can be any center frequency where MARK and SPACE will both be between 300 Hz and
3200 Hz; This is a function of the selected bandwidth (TXBW - Parameter #1). For example,if the transmit bandwidth
was set to 300 Hz,the transmit carrier frequency cannot be set lower than 450 Hz,or higher than 3050 Hz.
RFL 9850 TX
February 3, 2000
13
RFL Electronics Inc.
(973) 334-3100
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
REAR PANEL
OMMON
C
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NOTES:
1, Rl & R2 ARE OPTIONAL 1/2 WATT LOAD RESISTORS.
Figure 6. Schematic, RFL 102015 RS-2321/0 Module {Assembly No. 102015; Schematic No. 102019, Rev. B)
RFL 9850 TX
February 3, 2000
14
RFL Electronics Inc.
(973) 334-3100
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
REAR PANEL
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2 4A,25C
25A,2 3C
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32A,32C
(
NOTES:
1.
Rl,R2 & R 3 ARE OPTIONAL 1/2 WATT LOAD RESISTORS.
Figure 7. Schematic, RFL 102065 Data 1/0 Module (Assembly No. 102064; Schematic No. 102069, Rev. B)
RFL 9850 TX
February 3, 2000
15
RFL Electronics Inc.
(973) 334-3100
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
-I
""O
Figure 8. Component locator drawing, RFL 9850 TX Programmable FSK Tone Transmitter
(Assembly No. 103170; Circuit Board No. 103173, Rev. A)
RFL 9850TX
February 3, 2000
16
RFL Electronics Inc.
(973) 334-3100
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
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1
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
+SV
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3
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G)
Figure 9. Schematic, RFL9850 TX Programmable FSK
Tone Transmitter (Assembly No.103170;
Schematic No. 103174, Rev. E -Sheet 1 of 3)
February 3, 2000
17 (18 blank)
RFL9850 TX
Jl-9
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U23
3
---------4.---tOUT
IN
79LOS
2
P1-4A
I
j
•
P1-4C
IN
y7
C15
6.8µF
Pl-3C
CR17
25V
Pl-2A
A
SH. 3:.,.1----,
•
R30
E
C.?-+sv
SH. 3
3
P1-19 c
•RTS" __ _ _ _ _ __
RTS
�
I
DS1
l P/0 RZ1 2
·RTS"
+SV--1------.."1,,1---------680n
I
SH. 1
SH. 1
SH. 1
SH. 1
T
y7
25V
P1-1A
Cl?
;1µF
J
�r
+
22pF
+SV
CRIS
Jl-1
Pl-1C
IIK
R31 •
P1-2C
+ C14
6.8µF
SH. 1
ILIF
Jl-12
-sv
SH. 1
Jl-13
Pl-3A
�- _ _ _ __....___..,....--------4t-�J +lSV
-lSV
T+
SH. 1
-1SV
A
P/0 RZl 6
+SV-"'4.- --------•v,�v--------�
C
•s IN"
sson
SH. 3 ....--e
R28
U22
�
DS3
1489
SPACE IN
•sPACE"
11
P1-21C
SH. 1
C16
22J1F
20V
-sv
Jl-14
SH. 1
11
.....,----------�----1.------�------..--�-----.
+15V
CCI
TDC
10
C4
10
U15
MC145402
us
CLK
CODEC
B
._t---•
·MARK"
IN
P1-22C
SH. 3
....
l P/0 RZl B
+SV--49--------'�l,.fir---------,l•MJN"I
680n
R26
Pl-32A
TP3
Pl-32C
-1'
•
10
-sv
8
DS4
MARK lN
SH. l
Figure 9. Schematic, RFL9850TX Programmable FSK
,Tone Transmitter (Assembly No. 103170;
Schematic No. 103174, Rev. E-Sheet 2 of 3)
· NOTE: • - INDICATES OPTIONAL RESISTORS.
J3
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
February 3, 2000
19 (20 blank)
RFL9850TX
SH. 1
CTS
1488
4
5
+SV
13
C21
330pF
f
Pl-lSC
"CTS"
12
+15V
r-------------------------------------,
2
,
15
2
Pl-7C
1488
+
I
I
I
I
ISOLA TED-INPUT KEYING OPTION
Rl01
390 1W
RTS
+SVOC
5 TO 15VDC INPUT
NOTES I & 2
CR101
IN9148
5
R104
1.2K
Pl-SC
6
P1-16C
10
«
4
CR19
-1SV
390 1W
MARK IN
1488
9
R102
+
8
CR102
IN9148
RIOS
1.2K
7
390 1W
CR103
IN9148
R106
1.2K
2
I
11
12
A
SH. 2
10
.....
R103
+
SPACE IN
Pl-25C
.....
.....
8
Pl-17C
Pl-24C
6
U101
I
I
I
I
I
I
I
I
.....
.....
B
9
SH. 2
15
16
I
I
C
SH. 2
L-------------------------------------�
2004
4
NOTES:
1. FOR ISOLATED KEYING OPTION INSERT R101-106,CR101-103,U101.
2. AN IN�UT VOLTAGE >lSVOC MAY BE APPLIED BY ADDING AN EXTERNAL
E
-9 75
SERIES RESISTOR Rs- Rs- APPLIEo •
.025
-4
BE =9.375 x 10 CR5).
WATTAGE OF Rs SHOULD
Figure 9. Schematic, RFL9850 TX Programmable FSK
Tone Transmitter (Assembly No.103170;
Schematic No. 103174, Rev. E-Sheet 3 of 3)
February 3, 2000
Because RFL™ and Hubbell® have a policy of continuous product improvement,
we reserve the right to change designs and specifications without notice.
21 (22 blank)
RFL9850 TX