Agilent Technologies 8753ES Option 011 Service Manual page 153

NOTE Make sure that the spectrum analyzer and network analyzer references are
not connected.
3. For Option 1D5 Instruments Only: Remove the BNC-to-BNC jumper that is
connected between the "EXT REF" and the "10 MHz Precision Reference," as shown in
Figure 3-19.
4. Set the spectrum analyzer measurement parameters as follows:
Spectrum Analyzer
Parameter
Frequency
Span
Amplitude Ref Level
5. On the network analyzer, press
for Option 006).
G/n
6. No adjustment is required if the spectrum analyzer measurement is within the
following specifications:
• ± 30 kHz for analyzers without Option 006
• ± 60 kHz for analyzers with Option 006
Otherwise, locate the A12 assembly (red extractors) and adjust the VCXO ADJ (see
Figure 3-18) for a spectrum analyzer center frequency measurement within
specifications.
7. Replace the A12 assembly if you are unable to adjust the frequency as specified. Repeat
this adjustment test.
Figure 3-18 Location of the VCXO ADJ Adjustment
Chapter 3
Network Analyzer without
Option 006
3 GHz
60 kHz
10 dBm
Preset
Adjustments and Correction Constants
Network Analyzer with
Option 006
6 GHz
120 kHz
10 dBm
CW FREQ
Sweep Setup
Frequency Accuracy Adjustment
(or
3 G/n 6
3-43