NI 4050

The NI 4050 is a 5½ digit DMM for the PCMCIA bus. For more detailed information about the NI 4050 specifications, refer to Related Documentation for the NI 4050 specifications document.

Front Panel Connections

The NI 4050 connects to an accessory cable that connects the DMM to a pair of test probes with shrouded banana plugs, which are included with your DMM. Refer to Related Documentation for the NI Digital Multimeters Getting Started Guide for more information on connecting the NI 4050 to the test probes. For an illustration of the front panel connectors and wiring instructions, refer to NI PCMCIA-4050 Front Panel Connections.

Operation

The following table lists the functions and ranges supported by the NI 4050:

Function	Ranges
DC Voltage	20 mV, 200 mV, 2 V, 25 V, 250 V
AC Voltage	20 mV, 200 mV, 2 V, 25 V, 250 V
DC Current*	20 mA, 200 mA
AC Current*	20 mA, 200 mA
2-Wire Resistance	200 Ω, 2 kΩ, 20 kΩ, 200 kΩ, 2 MΩ, 20 MΩ
Diode	2 V at 100 µA
* You must use a current shunt module (CSM) to measure current on the NI 4050. For more information, refer to Measuring Current and to Related Documentation for the NI Digital Multimeters Getting Started Guide.

Calibrating the NI 4050

Calibration maximizes the accuracy of a DMM. To ensure accuracy, you must perform calibration. NI recommends you calibrate annually.

For information on calibrating the NI 4050 using National Instruments Calibration Executive, refer to the NI Calibration Solutions Web site.