HP 8753E Service Manual page 403

Node 16
Perform step A11 and then press m '$@&$%:Z# (161 @J (Z&TZ]
. . . . . . Li i . . . . . . . . . . . ; 2
This node displays the tuning voltage ramp used to tune the source oscillator.
You should see a voltage ramp like the one shown in Figure 10-12. If this
waveform is correct, you can be confident that the All phase lock assembly,
the A3 source assembly, the A13/A14 fractional-N assemblies, and the A7 pulse
generator are working correctly and the instrument is phase locked. If you see
anything else, refer to the "Source Troubleshooting" chapter.
Figure 16-12. Analog Bus Node 16
. . . . . . . i . . . . . . . . . . . : : : : .
. . . . . . . . Li i::::.:._;;~ . . . . . ~ . ~ . C . Z .. . . . . . . . .
Service Key Menus and Error Messages
1037