Performing Noise Check - Keysight B2980B Series User Manual

Performing Noise Check

This section explains how to perform the noise check.
Figure 5-16
Test Fixture
This example confirms if the Triaxial Cable is the noise source.
After completing the whole measurement setup, start the noise checking as
follows.
1. Press the Apps function key on the Meter view, then press the #1 assist key.
2. Connect the triaxial cable to the B2980 Ammeter input connector and make
3. Set the measurement range and PLC (aperture time) to Auto or your desired
4. Press OK (function key). The Setup Integrity Checker panel opens.
5. Press the Check assist key to start the following noise checking sequence.
Keysight B2980B User's Guide, Edition 1
Noise Checking
DUT
Target
The Confirmation dialog box opens.
the other side of the cable OPEN.
values.
a. Making the input switch of the ammeter ON to be under your measurement
environment, and waiting for 20 seconds.
b. Performing the sampling measurement 100 times at 10 ms intervals, and
getting and holding the target noise level (current variation under your
measurement environment).
c. Setting the input switch of the ammeter to OFF and wait for 20 seconds.
d. Performing the sampling measurement 100 times at 10 ms intervals, and
getting and holding the reference noise level (current variation inside the
instrument).
e. Displaying the results on the Setup Integrity Checker panel. Current results
are added at the bottom line of the table.
Triaxial cable
Function Details
Setup Integrity Checker
B2980
Ammeter
R eference
249