Technical data

8510XF Service Quick Reference Guide 3-5
Making 8510XF Adjustments
Procedure 3.
8360 Series Sources
Full User CAL
Full User CAL initiates a full synthesizer calibration. The calibration
performed is instrument state dependent. For example, if the synthesizer is
in ramp sweep mode, a sweep span and an auto track calibration are
performed. If the synthesizer has amplitude modulation active on an SW
signal, then RF peaking and AM bandwidth calibrations are performed. For
8510XF purposes, only ramp-sweep mode is needed.
Perform the following calibration procedure:
1. On the 8360, press
[PRESET] [USER CAL].
2. Select {Full User CAL}. Wait for the calibration to complete (usually less
than a minute).
Attenuation needed
If the 8360 series source does not have a built-in attenuator, you will be
prompted to connect a 10 dB attenuator to the 8360 series RF output port.
Auto track is done as part of Full User CAL.
NOTE If the 8360 series source does not have a front panel, use the 8360 source
front panel emulator in the 8510C network analyzer (refer to the “Service
Program” section in the 8510C On-Site Service Manual). For the RF source
calibration, the front-panel emulator will default to GPIB address 19. For the
LO source calibration, change the GPIB address in the front panel emulator
to 18.
Procedure 3A.
8360 Series Sources
Modulator Offset and
Gain Adjustment
(8510XF
RF source only)
Modulator offset and gain adjustment optimizes the modulator in the 8360
series source for maximum performance. This is necessary since the RF
source is part of the 8510XF level control (refer to Figure 3-3 on page 3-6).
This should be done before the conversion loss calibration is performed on
systems with older sources or sources which may be out of calibration.
Adjust the RF source using the procedure “Modulator Offset and Gain
Adjustment” in the 8360 Series Synthesized Sweeper Service Guide’s
“Adjustments” chapter.