Table 10-1 Center Frequency Tuning Values - HP 8560E Service Manual

4. As the sampling oscillator frequency is increased, the DVM reading
Table 10-1 Center Frequency Tuning Values
HP 8560E/EC Center
Frequency (MHz)
2156.3
2176.3
2199.5
2230.3
799.3
2263.3
2282.3
2302.3
2155.3
2158.3
2336.3
2196.3
1.3
2378.3
2410.3
2422.3
Check A14J301 10 MHz reference input (steps 5-8)
5. Disconnect W37 from A14J301.
6. Connect a test cable from W37 to the input of another spectrum
7. The amplitude of the 10 MHz reference signal should measure >−1
8. Reconnect W37 to A14J301.
Check first LO (steps 9-11)
Chapter 10
should also increase. If the tune voltage is correct, but the ADC
measures the voltage and determines it to be out of specification,
troubleshoot the A3 assembly ADC MUX.
analyzer. Tune the other spectrum analyzer to the following settings:
Center frequency .................................................... 10 MHz
Span .......................................................................... 2 MHz
dBm. If the signal does not measure >−1 dBm, troubleshoot the A15
10 MHz distribution, and A21 OCXO (if not Option 103).
Synthesizer Troubleshooting Section
Sampling Oscillator
Frequency (MHz)
285.000
286.364
287.500
288.462
288.889
290.000
290.909
291.667
292.500
293.478
294.444
295.000
296.000
296.471
297.000
297.222
Synthesizer Section
509