CPC 100 V1.41
7 - 6
Measurements
Selecting the check box "Manual input" lets you enter the value for VDC
manually, for example, when VDC was measured with an external volt meter
rather than at input VDC.
Automatic Test vs. Manual Test
1. Option "Manual input" clear
Automatic test
– Press the I/O (test start/stop) push-button to start the test.
The test current increases from 0A to Itest in a ramp characteristic within
1 second. Then Itest is kept for a period of 1 second, and the measurements
are taken. Next, the ramp decreases again within 1 second.
– The automatic test stops by itself, it can now be assessed.
– To repeat the test, first press B
ACK TO T OP, if applicable, and then C LEAR
R
ESULTS.
Manual test
Clearing "Auto" lets you set the test current Itest manually with the handwheel.
– Press the I/O (test start/stop) push-button to start the test. The focus is set
onto the "I test:" entry field.
– Set the value of your choice either by turning the handwheel and/or by
entering it with the numerical keys.
– Now the measurements are taken and displayed.
– To save the measurement press K
EEP RESULTS (pressing the I/O push-
button has the same effect). The last measured values are "frozen", the test
can now be assessed.
IDC: actual test current that is injected into the test object
VDC: measured voltage drop at the test object
R: calculated resistance of test object, R = VDC / IDC
Note: "Manual Input" cannot be selected at the range VDC (2 wire).
Note: A value set with the numerical keys needs to be fully entered and
acknowledged by pressing either E
NTER or the handwheel before
it is applied to the output. If needed, it can then be adjusted using
the handwheel.
Values set by turning the handwheel are applied instantaneously.
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