Tektronix H600 RFHawk, Руководство по обслуживанию, Страница: 40 / 109

Performance Veri fi cation
Check Residual Spurs This test checks for residual spur signals with the preamp on. Because this is a
manual test, it is simpli
fi ed to look for gross defects instead of a more rigorous
check.
1. Reset the H600 or SA2600 application:
a. Select Tools > Factory Reset .
b. Tap Reset All .
2. Connect a 50 Ohm RF terminator to the H600 or SA2600 under test RF
INPUT connector. Disconnect the external reference.
a. Tap the Spectrum drawer.
b. Tap the More button.
c. Tap the Trace tab.
d. Change Type to Average .
e. Change the detector to Average mode.
f. Tap the Ampl tab .
g. Set the Ref Level to -60 dBm .
h. Tap the Freq/Span tab.
i. Set the Start frequency to 10 MHz .
j. Set the Stop frequency to 6200 MHz .
k. Set the RBW to 100 KHz .
3. Note any single frequencies that extend more than about 5 dB above the
adjacent noise
fl oor.
a. For any single frequencies found, adjust the span and center frequency to
reduce the span to 20 MHz centered around the suspect frequency.
b. If this single frequency exceeds the residual spur high limit of the test
record, write the frequency and amplitude of this spur in the test record.
c. Repeat steps a and b for any other suspect frequencies.
End of performance veri fi cation procedures.
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