Model 8640B TM 9-4935-601-14-7&P
Table 4-2. Recommended Test Abridgements (1 of 3)
Para. Performance Test Alteration Remark
No.
4-11. Frequency Range Test Check only 0.5 - Ranges obtained by binary division of 230 -
1 MHz Range. 550 MHz RF oscillator. All dividers oper-
ate on 0.5 - 1 MHz Range.
4-12. Frequency Accuracy Omit steps 5 to Fine tune of secondary importance.
and Fine Tune Test 8.
4-13. Frequency Stability vs Omit steps 5 to Restabilization time of secondary impor-
Time and Restabiliza- 7. tance.
tion Time Test
4-14. Frequency Stability Omit test. Drift is small in a normal lab environment.
vs Temperature Test
4-15. Frequency Stability vs Omit test. Frequency shifts are small in a normal lab
Line Voltage Test environment.
4-16. Frequency Stability vs Omit test. RF oscillator well buffered from external
Load, Level, and Mode loading. FM offset null constant under
Test normal lab environment.
4-17. Harmonics Test None
4-18. Sub-harmonics and Non- Omit test. No mechanism for generation of spurious
harmonic Spurious Test signals except counter, which is heavily
shielded and filtered.
4-19. Single Sideband Phase None
Noise Test
4-20. Single Sideband Broad- None
band Noise Floor Test
4-21. Residual AM Test Omit step 4. Normally within specification for 300 Hz
to 3 kHz bandwidth if within specification
for 20 Hz to 20 kHz bandwidth.
4-22. Residual FM Test Omit steps 6 Normally within specification for 300 Hz
and 7. to 3 kHz bandwidth if within specification
for 20 Hz to 20 kHz bandwidth.
4-23. Output Level Accuracy None
Test (Abbreviated)
4-24. Output Level Accuracy Omit test. Most useful ranges checked by abbreviated
Test (Complete) test.
4-25. Output Level Flatness None
Test
4-26. Output Impedance Test
(In Band)
Omit one test. A condition that is out of specification will
4-27. Output Impedance Test usually show on both tests.
(Out of Band)
4-85
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