Keysight 34470A - VM Comp Output (BNC)

VM Comp Output (BNC)
The rear-panel VM Comp (voltmeter complete) output provides a 3.3 V pulse after each measurement
completion to implement a standard hardware handshake sequence between measurement and switching
devices.
The signal shown is for a negative pulse.
Keysight Truevolt Series Operating and Service Guide
459
SCPI Programming Reference