Node 16
lV/GHz
(source oscillator tuning voltage)
. . . . . . .
i
. . . . . . . . . .
.::::.
Perform step A11 and then press
m
‘$@&$%:Z#
(161
@J
(Z&TZ]
.. . . . . . .
Li
i::::.:._;;~
..
. . .
~.~.C.Z
.
.....
. . . .
iimo@m.
.
. . . . .
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.
sg6270d
Figure
16-12.
Analog Bus Node 16
Service Key Menus and Error Messages
1037
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