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National Instruments Corporation
21
NI Digital Multimeters Getting Started Guide
Using Cables and Probes
The DMM shipping kit contains a pair of test probes with safety banana plugs. These probes meet
international safety requirements, including UL 3111 and IEC 1010-1, for the full range of applications
supported by the DMM.
Caution
Before using any probes or accessories not supplied by NI, ensure that they meet applicable
safety requirements for the signal levels you may encounter.
Connect the test probes to the banana plug connectors on the DMM front panel using safety banana
plugs. The shrouds around the banana plugs prevent you from contacting potentially hazardous voltages
connected to the test probes. You can also connect the cable to standard, unshrouded banana plug probes
or accessories. Use unshrouded probes or accessories only when the voltages are less than 30 V
rms
and
42 V
pk
, or 60 VDC.
Cautions
(NI 4050 users)
To prevent possible safety hazards, the maximum voltage between either
of the inputs and the ground of the computer should never exceed ±250 VDC or 250 V
rms
.
(NI 4060 users)
To prevent possible safety hazards, the maximum voltage between either of the inputs
and the ground of the computer should never exceed ±300 VDC or 300 V
rms
. The maximum
current the NI 4060 can measure between the current inputs is ±200 mA DC or 200 mA
rms
.
(NI 4065 users)
To prevent possible safety hazards, the maximum voltage between either of the inputs
and the ground of the computer should never exceed ±300 VDC or 300 V
rms
. The maximum current
the NI 4065 can measure between the current inputs is ±3 A DC or 3 A
rms
.
(NI 4071 users)
To prevent possible safety hazards, the maximum voltage between either of the inputs
and the ground of the computer is 500 VDC or 500 V
pk
(sine wave), except between the HI terminal
and ground, where the maximum voltage is 1,000 VDC or 700 V
rms
(sine wave). The maximum
current the NI 4071 can measure between the current inputs is ±3 A DC or 3 A
rms
.
(NI 4070/4072 users)
To prevent possible safety hazards, the maximum voltage between either of the
inputs and the ground of the computer should never exceed ±300 VDC or 300 V
rms
. The maximum
current the NI 4070/4072 can measure between the current inputs is ±1 A DC or 1 A
rms
.
9. Programming the DMM
You can acquire data with the DMM by using the DMM SFP, NI-DMM/Switch Express VI,
NI LabVIEW SignalExpress, or the NI-DMM instrument driver in your application, and you can
run the NI-DMM examples to demonstrate the functionality of the DMMs.
DMM Soft Front Panel
The DMM SFP is a software representation of a traditional benchtop DMM. Use the DMM SFP to test
the basic functionality of the DMM and to become familiar with its operation. You can launch the DMM
SFP from
Start»All Programs»National Instruments»NI-DMM»DMM Soft Front Panel
.
NI-DMM/Switch Express VI
The NI-DMM/Switch Express VI configures and acquires a signal using NI-DMM with National
Instruments digital multimeters and PXI or SCXI switch modules. You can launch the NI-DMM/Switch
Express VI from LabVIEW 7.
x
or later.