Adjustment procedures
AFG31000 Series Arbitrary Function Generator Service Manual
28
Enable Service mode
You must enable the service mode to perform the adjustment procedure. Do the following steps to
enter the service mode.
To enable Service mode
1. Push the Power button to power on the arbitrary function generator.
2. Press the front-panel number keys to input the password “62218.”
3. Press the Utility button on the front-panel.
4. Check if Service is in the last position of Utility menu on the touchscreen.
Save Cal
To adjust the Reference Clock, Flatness, and Trigger Delay parameters, select Service > Manual
Calibration.
Each parameter is stored in the memory of the arbitrary function generator after you select the Save
Cal on the Manual Calibration options.
Previous adjustment parameters will be recalled after a power cycle, unless you select the Save Cal.
CAL Clear
The Cal Clear procedure is in Service > Manual Calibration. It clears all the current adjustment
parameters and sets them to the default value. The previous adjustment parameters will be recalled
after a power cycle unless you select Save Cal.
Reference clock
This procedure adjusts the frequency accuracy of the arbitrary function generator. For any model,
only channel one of the frequency point is adjusted.
To adjust the reference clock:
1. Connect the instrument to a frequency counter using the AFG CH1 Output and the frequency
counter input using a 50 Ω BNC coaxial cable.
Figure 11: Reference clock adjustment
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