In-Phase 2Nd Lo Signals In Low Band - HP 8753D Option 011 Service Manual

The 2nd LO signals in low band, as shown in

In-Phase 2nd LO Signals in Low Band.

Figure 7-14, are not phase shifted. In low band these signals track the RF output with a 4
kHz o set.
Figure INPH S7 here.
Figure 7-14. In-Phase Low Band 2nd LO Signals (14 MHz CW)
If any of the signals of Table 7-2 are incorrect, the probability is 90% that the 12 assembly is
faulty. Either consider the 12 assembly faulty or perform the \ 12 Digital Control Signals
Check" described below.
7-20 Source Troubleshooting RAFT
3/21/106 15:13
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