Constant Current (CC) verification
Current programming and readback accuracy
These tests verify that the current programming and the LAN or USB readback measurement functions
are within specifications. Note that the readback values over the remote interface should be identical to
those displayed on the front panel, but with maximum resolution.
1.
Turn off the power supply using the AC line switch.
2.
Connect the current shunt directly across the output terminals. Connect the DMM directly across
the current shunt.
3.
If you are using a PC to control the power supply, connect a LAN or USB cable from the power sup-
ply to the PC.
4.
Turn on the power supply using the AC line switch.
Current programming accuracy
Step Front Panel SCPI
5. Set the instrument settings as described in the test record form under Current Pro-
gramming and Readback
. See
Test Record Forms
for details.
VOLT 6; CURR 5 (for example for
the E36102A, 6 V, 5 A output)
6. Enable the output by pressing the Output ON key OUTP ON
7. The output status should be CC and the output voltage should be close to zero.
8.
Divide the voltage drop (DMM reading) across the current shunt by the shunt resistance to convert
to amps.
9.
Record the current measured by the DMM and verify whether it is within the limits calculated.
Current readback accuracy
Step Front Panel SCPI
10. MEAS:CURR? (for example for the
E36102A, 6 V, 5 A output)
11.
Record the current returned by the SCPI command query via Keysight Connection Expert, and verify
whether it is within the limits calculated.
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