Chapter 10 513
Synthesizer Section
Synthesizer Troubleshooting Section
29.On the HP 8560E/EC, press SGL SWP.
30.Move jumper A14J23 to the TEST position.
31.Disconnect W34 from A15U100J1 and measure the power of the
signal at the end of W34.
32.If the power is less than −6.5 dBm, suspect W34, A7 LODA, or A11
YTO.
33.Move jumper A14J23 to the NORM position.
Table 10-2 Sampling Oscillator Test Frequencies
HP 8340A CW
Frequency(GHz)
HP 8560E/EC
Center
Frequency
(MHz)
Offset PLL
Sampling
Oscillator Freq
(MHz)
CounterReading
Sampler IF
(MHz)
6.067000 2156.3 285.000 82.000
6.087000 2176.3 286.364 73.364
6.110200 2199.5 287.500 72.700
6.141000 2230.3 288.462 83.308
4.710000 799.3 288.889 87.778
6.174000 2263.3 290.000 84.000
6.193000 2282.3 290.909 83.909
6.213000 2302.3 291.667 88.000
6.066000 2155.3 292.500 76.500
6.069000 2158.3 293.478 94.044
6.247000 2336.3 294.444 63.667
6.107000 2196.3 295.000 88.000
3.912000 1.3 296.000 64.000
6.289000 2378.3 296.471 63.118
6.321000 2410.3 297.000 84.000
6.333000 2422.3 297.222 91.333
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