Teledyne LeCroy HFP2500 - Manual (Page 31)

Operator’s Manual
922253-00 Rev A 25
Procedure
A. Output Zero Voltage
Figure 5, Output Zero Voltage Test Setup
1. Connect one end of a BNC cable to the female BNC connector on the probe end of the
ProBus extender cable. Connect the precision 50 Ω terminator to the other end of the BNC
cable.
2. Connect the banana plugs of the Precision terminator to the input of the DMM. Make sure
that the plug corresponding to the BNC shield (marked "Ground") is connected to the LO or
COMMON input of the DMM. Refer to Figure 5, Output Zero Voltage Test Setup for setup
information.
3. Set the OFFSET on the oscilloscope to zero, as indicated by on-screen display.
4. Set the DMM to read DC Volt on the most sensitive range.
5. Record the voltage measured on the DMM to 10 μV resolution as ’Output Zero Voltage’ in
the Test record.
6. Check that the voltage indicated by the DMM is between ±800 μV.
7. Disconnect the DMM from the precision 50 Ω terminator. Leave the remaining setup in
place for the next step.