Tektronix H600 RFHawk, Руководство по обслуживанию, Страница: 32 / 109

Performance Veri fi cation
Check External Lock Time This test checks the lock time of the external frequency reference input.
1. Reset the H600 or SA2600 application:
a. Select Tools > Factory Reset .
b. Tap Reset All .
2. On the Signal Generator:
a. RESET the Signal Generator.
b. Connect a BNC cable to the external reference output of the Signal
generator.
3. On the H600 or SA2600:
a. Make sure that the reference oscillator indicator, near the upper right
corner of the screen, is indicating
F Int .
b. Connect the BNC cable from the signal generator’s 10 MHz Reference
Out to the H600 FREQUENCY REFERENCE INPUT and record the
time.
c. Watch the reference oscillator indicator; when it changes from F Int to F
Ext, record the time.
d. The difference between the two times is the result of the test. The time
should be 15 seconds or less.
Check RF Channel Power
Accuracy
This test checks the accuracy of the RF channel power measurement.
1. Reset the H600 or SA2600 application:
a. Select Tools > Factory Reset .
b. Tap Reset All .
2. Set the H600 or SA2600 application to read channel power:
a. Display a Spectrum measurement.
b. Tap the RF Measure drawer.
c. Select Channel Power from the Measurement drop-down list, tap the
Meas BW fi eld, tap the keypad icon on the Meas BW dialog box, and
enter 10 kHz .
3. Connect a 10 dB attenuator to the RF cable. (The attenuator improves the
impedance match between the Signal Generator and the H600/SA2600 under
test.)
4. Connect an N-type barrel adapter (female-to-female) to the attenuator.
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