Picotest M3500A User Manual page 88

V = Voltage measured by the DMM
R = Shunt resistance value
As to the MX+B setting, "M" stands for "1/R", "X" stands for "voltage
measured by the DMM" and "B" stands for "Offset, 0".
Application1.
(via the scanner card and the PT-TOOL software for the multipoint
measurement, but it has some limitations when using it.):
1. Switch the terminal to the rear control.
2. Build in the necessary current shunt on the R1/R2 location
(available measurement for CH1/CH6 only). Or externally
connect current shunts in parallel connection to the required
Channel(s) among CH1 ~ CH10 and current source(s). (The
section 4.4.5 has the diagram explanation of the scanner card.)
3. Insert the scanner card into the DMM carefully.
4. Connect the output A's leads to the rear terminal INPUT HI and
LO.
5. Execute the PT-TOOL.
6. Choose DCI function to activate the MX+B function. You need to
input the "R" value and the Offset "I" value if you know.
7. Press YES to start the measurement.
Note: We can't accept the input source exceeding (ACV: 125V/ DCV:
※
110V) or the components on the scanner card might be burned out. It's
better to use the front terminal to test sources first.
Application 2.
(via the front panel operation for the single current measurement.):
Case: Mr. Obama wants to measure a source, 10A, through a 0.1Ω
current shunt and a M3500A DMM. However, the DMM's tolerance just
can stand the maximum input current, 3A. What should he do?
Please obey the following procedures and illustrations as a big current
measurement solution.
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