Filter
Top Products
Using the Digital Multimeter
VX4101A MultiPaq Instrument User Manual
2–45
NOTE. To make a DC coupled AC voltage measurement, use ACDC in place of
AC in the CONF:VOLT:AC command
3. Initiate and acquire the AC V measurement:
INIT
4. Return the AC V measurement:
FETCh?
Making a 2-Wire Resistance Measurement
It is possible to make both 4-wire and 2-wire measurements. The hardware
considerations for both types of measurements are as follows:
2-Wire Measurements. 2-wire resistance measurements are made by connecting to
pins 6 (R+) and 1 (R–) of the D-sub connector. For making 4-wire resistance
measurements pins 9 (R+) and 5 (R–) are also used.
4-Wire Measurements. 4-wire measurements are useful when making low-resis-
tance or null resistance measurements. The additional two wires eliminate
cabling resistance in the measurement. For effective use of the four-wire
measurement, connect the pins as follows:
H Connect pins 6 and 9 as close as possible to the positive side of the
resistance to be measured
H Connect pins 1 and 5 as close as possible to negative side of the resistance
1. Select the DMM:
INST:SEL DMM
2. Configure the DMM to take a resistance measurement in the 30 Ohm range
with minimum resolution:
CONF:RES 30, MIN
3. Initiate and acquire the resistance measurement and retrieve results:
READ?
Hardware Tips
Programming Example