Impedance/Frequency Response Analyser
Cypher Instruments have developed the C60, a low cost,
portable scientific test and measurement device. This
unit measures the Amplitude, Phase and Impedance
responses of electronic, electro-acoustic and other systems. The tests are controlled by a PC and the results
are displayed as graphs.
Applications and uses
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•
•
•
•
•
•
Example graphs
Professional / consumer audio
Ultrasonic products
Electro-acoustic transducer design
Component evaluation
Research and development, education
Production testing and quality control
Field service and maintenance
Elliptic low pass filters
10KHz
Features
20KHz
70KHz
• Measure amplitude, complex impedance and phase
0
-10
Amplitude Gain - dB
-20
-30
-40
-50
-60
-70
-80
101
102
103
104
Frequency - Hz
105
106
Produced
by Cypher
Instruments
USB cable
impedance
Open small
Modulus of Impedance - Ohms
10 4
Shorted small
Open
Shorted
10 3
10 2
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•
•
•
•
•
responses from 10Hz to 4MHz
Frequency axis displayed logarithmically or linearly
Amplitude measured as gain or loss displayed in dBs
Phase display ranges of 0° to 180° or ± 180°
Display impedance in Ohms or admittance in Siemens
Professional graphs with 10 plots per graph
Intuitive powerful graphing program
Save graphs as data files and jpg, bmp and meta files
Export data as ASCII text for MathWorks MATLAB,
GNU Gnuplot and Microsoft Excel
Copy and paste plots from one graph to another
Automate testing procedures with test scripts
Pass / Fail testing using graphical masks
Small, light weight, portable, USB powered device
Firmware Upgradeable
Affordable
Product description
10 1
10 0
0.5M
1.0M
1.5M
2.0M
Frequency - Hz
2.5M
3.0M
3.5M
Produced by Cypher Instruments
Five inductors
with 10uH marking
10 2
Modulus of Impedance - Ohms
•
•
•
•
•
•
•
•
10 1
10 0
10 -1
10 -2
101
102
103
104
Frequency - Hz
Produced by Cypher Instruments
C60 brochure 26/01/06
105
106
The C60 investigates the opaque world of analog
networks. The unit operates in two test modes. It can
measure the frequency response of a two port system
producing a gain/loss and phase graph. It can also
measure the reactive response of a two terminal network
producing an impedance/admittance and phase graph.
Electronic, electrical, electro-acoustic and other networks
can be tested with sine wave excitation and the results
displayed on a PC. The C60 is USB powered; it needs no
batteries or external power supplies, making it portable.
The unit has a USB connector at the rear, an input and
output BNC and a USB Link/activity LED. All the functionality of the device is controlled by the PC through an
easy to use interface. A scripting language and digital
control outputs are provided for test automation.
www.cypherinstruments.co.uk
Example graphs
C60 - Specifications
Modulus of Impedance - Ohms
455KHz resonator, complex impedance
DDS Sine wave generator/output
10 5
10 4
10 3
10 2
10 1
10 0
150
Phase - Degrees
100
50
0
-50
-100
4.2*105
4.3*105
4.4*105
4.5*105
4.6*105
Frequency - Hz
Produced by Cypher Instruments
4.7*105
4.8*105
Frequency range of sine wave generator = 10Hz to 4MHz
DDS sine wave generator
Sine wave quality = 62dB SNAD (nominal)
Output voltage = 2Vpp maximum
Output attenuator, 0dB to -20.0dB in 2.5dB steps
DC offset at output = 0.9mV typical
Output impedance = 50 Ohms + parasitics of 23nH and 33pF (Z mode)
Frequency accuracy at 1MHz it is ±100ppm
BNC output connector
***** Destructive/Absolute Maximum Limits *****
Absolute maximum current applied to output = 0.2Arms
Absolute maximum voltage applied to output = 9VDC or 22VppAC
Capacitors
10nF
10 6
1nF
100nF
1uF
100pF
10uF
100uF
470uF
Modulus of Impedance - Ohms
10 5
10 4
10 3
10 2
10 1
10 0
Input channel
Input impedance = 1M ohm in parallel with 14.5pF
AC coupled input (0.15Hz HP)
Maximum signal input = 3.5Vpp maximum before compression (+5dB)
Minimum input signal = 100uVpp (-86dB) with Rsource = 50R
Noise floor = -86dB at 1MHz/input S/C; -73dB at 1MHz/input O/C
BNC input connector
Absolute maximum voltage applied to input = 50VDC or 50VppAC
Other hardware features
10 -1
10 -2
101
102
103
104
Frequency - Hz
Produced
by Cypher
Instruments
Active
Crossover
105
106
USB connection for data and power, USB 2.0 full speed (12Mbps)
Mode LED indicating Power and USB activity
Current consumption = 100mA to 220mA depending on activity
Power consumption = 0.5Watt to 1.1Watt depending on activity
Amplitude Gain - dB
0
Size and weight
-10
-20
148mm x 132mm x 43mm, 420g
-30
-40
Software
-50
Advanced graphing program used to display test results
Maximum number of test points = 1000 per plot, 2 parameters per plot
Multiple plots; 10 plots per graph, with user text fields
Logarithmic and linear frequency sweep and stationary frequency
Logarithmic and linear frequency axis
User controllable test settling time
User selectable range of frequency points
Logarithmic (dB) Gain/Loss amplitude display
Amplitude display range = +5dB to –86dB (0.025dB best resolution)
Amplitude detector straight line deviation = ±0.35dB
Linear phase accuracy = see user manual graphs
Phase range = ±180o and 0o to -180o
|Z| The modulus of the impedance of the test device (DUT)
Impedance accuracy = from ±0.5% to ±4.5% deviation (see user manual)
Impedance displayed in Ohms or Admittance in Siemens (log & linear)
Impedance display range of 0.01 Ohms to 1M Ohm (450K Ohm)
Auto ranging or fixed Impedance and Gain axes
Save/Recall as GAD and GZD files
Save graphs as JPEG images, BMP images, Meta files and data files
Use graphs in documents and emails
Graphing Controls; START, STOP, REPEAT, ZOOM, UNDO ZOOM, FULL
SCREEN, USER TEXT FIELDS, FREQUENCY LIMITS, SWEEP BACKWARDS,
ALTERNATE SWEEP, SWEEP TO ZOOM EXTENTS, PEN COLOURS, PEN
LOCK, GRAPH SELECTION COLOUR/BLACK/BLACK PLUS MARKERS, COPY,
CUT, PASTE
Calibration option for internal amplitude and phase trims
Multiple document interface
Scripting control of the unit
-60
150
Phase - Degrees
100
50
0
-50
-100
-150
101
102
103
Frequency - Hz
104
Produced
by Cypher Instruments
Two
transduceder
response
Amplitude Gain - dB
-10
-20
-30
-40
-50
-60
150
Phase - Degrees
100
50
0
-50
-100
-150
104
105
Frequency (Hz)
Cypher Instruments
Digital Audio Produced
latencyby (21/3380)
/ 2 = 3.1065mS
Amplitude Gain - dB
-10
-20
-30
-40
-50
150
Minimum PC specification
Phase - Degrees
100
Operating systems, Microsoft Windows 98SE, ME, 2000, or XP
Pentium II 333MHz
64MB RAM, 50MB HDD, Keyboard, mouse and USB
Recommended minimum graphics resolution of 1024 by 768
50
0
-50
-100
-150
0.0001M
0.0002M
0.0003M
0.0004M
0.0005M
0.0006M
Frequency - Hz
0.0007M
0.0008M
0.0009M
Produced by Cypher Instruments
C60 brochure 26/01/06
www.cypherinstruments.co.uk