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Basic Source-Measure Operation
2400 Series SourceMeter
®
User’s Manual
Measure only
Front panel measure only
In addition to being used for conventional source-measure operations, the SourceMeter
can also be used to measure only voltage or current. Perform the following steps to use the
SourceMeter to measure voltage or current:
1.
Select source-measure functions.
Measure voltage only (voltmeter) — Press SOURCE I to select the I-Source, and
press MEAS V to select the voltage measurement function.
Measure current only (ammeter) — Press SOURCE V to select the V-Source, and
press MEAS I to select the current measurement function.
2.
Set source and compliance levels.
Use the editing procedure provided in step 2 of the Basic source-measure proce-
dure to edit the source and compliance levels as follows:
a.
Select the lowest source range and set the source level to zero (0.00000µA or
000.000mV).
b.
Set compliance to a level that is higher than the expected measurement.
CAUTION
When using the SourceMeter as a voltmeter, V-Compliance must be set
higher than the voltage that is being measured. Failure to do this could
result in instrument damage due to excessive current that will flow into
the SourceMeter.
3.
Select range.
Use the RANGE
and
keys to select a fixed measurement range that will
accommodate the expected reading. Use the lowest possible range for best
accuracy.
When measuring current, AUTO range can be used instead. The SourceMeter will
automatically go to the most sensitive range. When measuring voltage, DO NOT
use AUTO range (see the following CAUTION).
CAUTION
When using the SourceMeter as a voltmeter only, DO NOT use AUTO
range and NEVER select a measurement range that is below the
applied signal level. For these conditions, high current will be drawn
from the external source. This high current could damage the external
source or test circuit.
4.
Connect voltage or current to be measured. Connect the DUT to the SourceMeter
using 2-wire connections. (
Figure 2-2
).
5.
Turn output on. Press the ON/OFF key to turn the output on.
6.
Take reading from display.
7.
When finished, turn output off.
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