3: Basic DMM operation Model 2110 5½ Digit Multimeter
3-16 2110-901-01 Rev. C/August 2013
Front-panel operation
Perform the following steps to measure the threshold voltage of a diode:
1. Connect the diode to the instrument, as shown below. These connections forward-bias the diode.
2. Press the SHIFT key and then the CONT (
) key to select the diode function.
3. To check or change the threshold voltage band, perform the following steps:
a. Press the CONFIG key, and with VF-LOW displayed, press ENTER.
b. Use the â—„, â–º, â–², and â–¼ keys to set the low threshold voltage (0.01 V to 1.00 V), and then
press ENTER.
c. With VF-HI displayed, press ENTER.
d. Use the â—„, â–º, â–², and â–¼ keys to set the high threshold voltage (0.01 V to 1.20 V), and
then press ENTER.
4. Observe the voltage reading on the display. The instrument beeps when the reading is within the
threshold voltage band.
Connections for diode measurements
Source current flows from INPUT HI to INPUT LO as shown in the following figure.
Figure 21: Connections for diode measurements
Remote operation
For remote operation, the default threshold voltage band is used for diode measurements.
Use the following commands to measure the threshold voltage of a diode.
FUNCtion "DIODe" Select the diode function.
READ? Measure the diode and acquire the reading.
A MEASure? command can also be used to perform the measurement and acquire the reading:
MEASure:DIODe?
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