Service Guide 10-25
8719ET/20ET/22ET Service Key Menus and Error Messages
8719ES/20ES/22ES Analog Bus on OFF
RF Network Analyzers
11.IF (IF used for phase lock)
Counter ON: analog bus Reading: 10 MHz
This node displays the IF frequency (see Figure 10-6) as it enters the A11 phase lock
assembly via the A7 ALC assembly. This signal comes from the R sampler output and is
used to phase lock the source.
Figure 10-6 Location of Internal Counter Reading on Display
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