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3-5 SIGNAL PATH These are a series of automated tests designed to insure the 373XXA in
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ternal signal paths are functioning properly and are capable of support
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ing stable calibrations and measurements. These test are performed us
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ing a software test program and an external computer/controller.
The test software performs the following operations and tests:
q
Service Log Check
q
Self Test
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Basic Sweep Operation and Speed Test
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High Level Noise Test
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System Stability Test
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RF Power Generation and Control Test
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Step Attenuators Accuracy and Repeatability Test
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Video IF Bandwidth Filters Operation Test
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Sampler Efficiency and Stability Test
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LO1/LO2 Linearity Test
q Source FM/Lock Signal Linearity Test
Equipment required:
37XXX Test Software (ANRITSU PN: 2300-178)
External computer/controller; refer to Table 1-1 located on page 1-9.
GPIB cable (ANRITSU PN: 2100-2), or equivalent
Procedure:
Step 1.
Refer
to file “Readme.txt” of the distribution disk for in
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formation regarding setup of the computer/controller.
Step 2. Using the GPIB cable, connect the external computer/con
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troller to the IEEE 488.2 GPIB Interface port on the
373XXA rear panel.
Step 3. Program may be run from floppy disk or copied to any
folder in the computer and run from there.
Step 4. Peform Non-Ratio and Transmission tests.
If any tests fail, refer to the Troubleshooting and Help selections of the
Test Software menu for assistance.
SIGNAL PATH OPERATIONAL TESTS
3-10 373XXA MM