Resistance Measurements (2 & 4-Wire) - Picotest M3510A User Manual

3A and 10A will be measured only through the 3A/10A and LO input
connectors.
Ensure the test leads are correctly connected to the DMM current
inputs.
It's important to prevent the internal fuse damage from abusing
source over 3 A on the 3 A input connector or over 10 A on the 10 Amp
connector.
The measured values will be incorrect under the following conditions.
1. At 3A terminal, Range: 10 A.
2. At 10A terminal, Range: 3 A.
To eliminate the thermal EMFs due to the differences between two
metals, use copper leads to connect your source signal to the meter.
How to measure current
1. Connect the test leads to the terminals on the front panel.
2. Set RESOLUTION of DCI (Refer to 4.1.3), BANDWIDTH of ACI (Refer
to 4.1.2.1) or skip this step to use the default settings.
3. Press SHIFT+DCV (or SHIFT+ACV) buttons for DCI (or ACI)
measurement.
4. Select the auto-range function by pressing SHIFT + ESC buttons on
the front panel or use
range.
5. Connect test leads to your source signal and observe readings shown
on the display. If the input signal is greater than the allowed range,
an overflow message "OVLD" will be displayed.
3.4 Resistance Measurements (2 & 4-wire)
The ranges for resistance measurement are 100
1M , 10M , and 100M , with a sensitivity of 100 µ
There are two modes for measuring the resistance: 2-wired mode and
4-wire mode. With 4-wire mode, the test current is measured from the
test resistance through one pair of the test leads, and the test voltage
across the resistance under test is measured from another set of the test
leads. As a result, the 4-wire mode is more accurate for low resistance
measurements. The trade off is the longer settling time for 4-wire mode.
and buttons to manully select a desired
△ ▽
31 31 31 31
, 1K , 10K , 100K ,
(at 100 range.)