5
1
⁄
2
Digit Multimeters
5
1
⁄
2
Digit Multimeters
to measure both AC and DC current. The CSM accessories include a
precision resistor that converts the current through the shunt into a
voltage measurable by the PCMCIA-4050. For measuring currents up to
200 mA or 10 A, use the CSM-200mA or the CSM-10A, respectively.
The NI 4060 DMMs have built-in current measurement capability.
Two input ranges exist for DC and True-rms AC current
measurements – 20 mA and 200 mA. For measuring currents
between 200 mA and 10 A, use the CSM-10A accessory.
Front-End Signal Conditioning
AC
Front End
HI
DC
Front End
Ohms
Front End
Ohms Current Source
LO
True RMS AC
to DC Converter
Processor
ADC
Memory
Software
A/D Conversion
Processor and Display
Power Supply
Input
Figure 1. Fundamental DMM Architecture
Diode Testing
The NI 4050 and NI 4060 DMMs measure the forward drop (up to
2 V) across a diode. The diode is biased with 100 µA current, and
the resulting voltage drop is measured. Diode measurements are
made with a fixed range of 2 V.
Software
Driver Software
All National Instruments DMMs are shipped with NI-DMM driver
software. NI-DMM is an IVI-compliant driver that exports the
complete functionality of the DMMs through an easy-to-use
application programming interface. You should use this driver if
you want to build an automated test application or integrate the
NI DMMs into your test software. NI-DMM works with LabVIEW,
LabWindows/CVI, Measurement Studio for Visual C++, and
Microsoft Visual Basic.
Calibration
The NI 4050 and NI 4060 DMMs are shipped with a calibration
certificate stating that the instrument was calibrated to NIST-
traceable standards to the levels detailed in the specifications.
These DMMs can be returned to National Instruments or a
qualified metrology lab for calibration.
Interactive Control
Every NI DMM is shipped with the DMM Soft Front Panel (SFP).
You can use the DMM SFP to quickly control the DMM without
writing a program. The DMM SFP provides access to all hardware
features except triggering and scanning.
Cables and Probes
The NI 4060 DMMs have built-in shrouded banana jacks to prevent
exposure to potentially hazardous voltages on the test probes. The
DMM kits include the P-1 Probe Set – two 1 m test leads (red and
black) with test probes.
The P-2 Probe Set, sold separately, includes two 1 m test leads (red
Modular Instrumentation
and black) with shrouded banana plugs on one end and a variety of
optional terminals on the other – two alligator clips (red and black) with
boots, two spring hooks (red and black), and two spade connectors (red
and black).
The banana-plug-to-bare-wire kit is a pair of banana to bare wire
plugs (one red, one black) that permits you to connect your DMM to
screw terminals for channel expansion via matrices or scanners. To
connect your NI 4060 to SCXI scanners and matrices, special cable
kits are available (SCXI-1357 and SCXI-1358). Refer to page 507 for
more information on switch cabling.
The probe sets meet IEC 1010 safety requirements and permit
direct probing of circuits and cables.
Ordering Information
NI PCMCIA-4050 ..................................................777186-01
Includes the PCMCIA-4050 card, P4-BJ2 Cable, P-1 Probe Set, NI-DMM, the DMM
Soft Front Panel, carrying case, and calibration certificate.
NI PCI-4060 ..........................................................777559-01
NI PXI-4060 ..........................................................777554-01
Includes the NI 4060 hardware, P-1 probe set, NI-DMM, DMM Soft Front Panel,
and calibration certificate.
For information on extended warranty and value added
services, see page 20.
Cables and Accessories
Triggering for Switches (NI 4060 only)
The NI 4060 DMMs work with external multiplexer/matrix switches. In
particular, the NI 4060 devices have been designed to integrate
seamlessly with National Instruments switch offerings for SCXI and
PXI. Two signals, Voltmeter Complete Trigger Output and Trigger Input,
control the switches. Access to the signals is through two BNC
connectors on the auxiliary trigger cable. On PXI, you can access the
triggers through the PXI trigger bus.
Standard Probe, P-1 Probe Set ............................761000-01
Additional Probe, P-2 Probe Set ..........................184698-01
Banana plug to bare wire, P-3 Probe Set
1 m, red and black (2 wires) ............................185692-01
Auxiliary trigger cable for use with external
multiplexers 0.5 m ........................................184931-0R5
10 A current shunt, CSM-10A ..............................777488-02
Visit
ni.com
for a more complete list of cables and accessories.
464
National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com
NI [ NATIONAL INSTRUMENTS CORPORATION ]
