ZS1000 High Impedance Active Probe
7–4
ZS1000-OM-E Rev C
PROCEDURE
A. Output Zero Voltage
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 7-1 for setup information.
Figure 7-1. Output Zero Voltage Test Setup
3. Set the
OFFSET
on the oscilloscope to zero.
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
µ
V.
7. Disconnect the DMM from the precision 50
Ω
terminator. Leave the
remaining setup in place for the next step.
B. LF Attenuation Accuracy
1. Disconnect the BNC tee at the power supply from the dual banana
plug adapter. Connect the BNC tee to the output of the function gen-
Summary of Contents for ZS1000
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