Aborting A Calibration In Progress; Frequency And Burst Rate Adjustment - Agilent Technologies 33120A Service Manual

Chapter 4 Calibration Procedures

Aborting a Calibration in Progress

Aborting a Calibration in Progress
Sometimes it may be necessary to abort a calibration after the procedure
has already been initiated. You can abort a calibration at any time by
pressing any front-panel key (except
calibration from the remote interface, you can abort a calibration by
issuing a remote interface device clear message or by pressing the
front-panel key.
LOCAL

Frequency and Burst Rate Adjustment

The function generator stores two calibration constants related to
frequency and burst rate output. The constants are calculated from the
adjustment value entered and are stored at the completion of each setup.
1 Use a frequency meter to measure the function generator output
frequency for each setup in the following table. These adjustments use
a 50 W output termination.
SETUP FREQUENCY
00 * 1.00 kHz
01 500 Hz
* A new calibration (SETUP 86 – Rev 4.0) has been added as an alternative to SETUP 00.
The new calibration outputs a 10 MHz sine wave, rather than the 1 kHz signal used for
SETUP 00. The new calibration reduces slew rate dependent errors in the frequency
measurement and is especially important when calibrating the Phase-Lock Assembly
(Option 001). Note that either setup is sufficient to calibrate the carrier frequency and
you don't need to perform both.
2 Use the CALIBRATE menu to adjust the displayed frequency at each
setup to match the measured frequency and enter the value.
3 Perform the Frequency Verification procedures on page 56.
Shift-Cancel
Nominal Output
AMPLITUDE
Adjustment for main frequency
10 Vpp
generator, sine wave output
Adjustment for burst rate timing,
10 Vpp
pulse output.
). When performing a
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