Racal Instruments 3155, User Manual

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3155 User Manual
Performance Verification 5-2
Warm-Up Period
Most equipment is subject to a small amount of drift when it is
first turned on. To ensure accuracy, turn on the power to the
Model 3155 and allow it to warm-up for at least 30 minutes
before beginning the performance test procedure.
Initial Instrument
Setting
To avoid confusion as to which initial setting is to be used for
each test, it is required that the instrument be reset to factory
default values prior to each test. To reset the Model 3155 to
factory defaults, send either of the following commands:
RESet, or *RST.
Recommended
Test Equipment
Recommended test equipment for performance testing is listed
below. Test instruments other than those listed may be used
only if their specifications equal or exceed the required char-
acteristics.
Test Instrument & Accessories Minimum Specification
Universal Counter 100MHz, 10ppm accuracy
DMM ACV, 0.2%; DCV, 0.1% accuracy
Distortion Analyzer 10 Hz to 100kHz
Spectrum Analyzer 1GHz bandwidth, 1kHz resolution
Pulse/Function Generator 20 MHz, 10ns pulsewidth
Oscilloscope 2 channels, 400MHz analog bandwidth
Feedthrough termination 50O, 1%
BNC Cables 1 meter long, 50O impedance
20dB feedthrough attenuator 50O, 1%
A
T
@
BNC Connector 50O, 1%
Performance
Check Procedures
Use the following procedures to check the Model 3155 against
the specifications. A complete set of specifications is listed in
Appendix A. The following paragraphs show how to set up the
instrument for the test, what the specifications for the tested
function are, and what acceptable limits for the test are. If the
instrument fails to perform within the specified limits, the in-
strument has to be calibrated or tested to find the source of the
problem.