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You'll now need to recalibrate the script following When I change the target time the counter time changes, but by the wrong amount.
Counter Time is 1.2e11 and Doesn't Change
This happened after a power outage. There is a frequency counter on top of the DM controller (Keysight 53230A) that measures the delay between two triggers, at least one of which is the regen. If this counter reads 120 Hz then it is in frequency counting mode, not time interval mode, and is measuring the regen frequency. The EDM panel then converts this number to ns by multiplying by 1e9, hence the 1.2e11 number.
To setup the controller:
- Unplug the ethernet cable from the back and wait a minute or so. The controller needs to have remote control disabled to change settings locally.
- Turn Ch. 2 on if it isn't already.
- Set the device to Time Interval mode by pushing the Time Interval Button.
- Set both channels to 50Ohm, DC coupling.
- Adjust the trigger settings for each channel to Rising slope at -200mV.
- I don't remember exactly how to adjust each setting, but it works similar to an oscilloscope.
- When finished the display should look like this:
Notice the trigger settings in the top tabs.