Datasheet

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• Temperature with thermocouples, RTDs, or thermistors (with 34921A)
• DC and AC voltage
• 2- and 4-wire resistance
• Frequency and period
• DC and AC current
You can control the DMM directly or configure it to work in conjunction with the switches. Each switch
channel can be configured independently for measurement functions, scale factors and alarm limits.
Advanced measurement features such as offset compensation, variable integration time, and delay are
also selectable on a per-channel basis.
The DMM inputs are shielded and optically isolated from the 34980A’s earth-referenced circuitry and
computer interface, and as a result, you get up to 300 V of input isolation. This is important for reducing
ground-loops and common-mode voltage errors associated with long wiring runs and floating sources.
Simple DMM calibration is accomplished with just the analog bus connection on the rear panel of the
mainframe. You don’t need to remove the mainframe from the rack or dedicate a channel for calibration.
Modules provide flexible system stimulus and control
System control—with analog outputs, open-collector digital outputs, clock generation, and isolated Form-
C relays for controlling external devices. Additionally, with the microwave switch/attenuator driver, high-
frequency switches and attenuators can be efficiently controlled external to the 34980A mainframe.
Analog sources—output either voltage or current. You can configure the 4-channel isolated D/A converter
as a point-to-point arbitrary waveform generator that lets you define up to 500,000 points per waveform.
Digital patterns—send or receive digital data from your device under test. With onboard memory you can
output communication protocols and bit streams or monitor digital input patterns and interrupt when a
user-defined pattern is detected.
Standard interfaces take the hassle out of connecting to your PC
Standard Ethernet, USB and GPIB interfaces are included in every mainframe. Use one of the built-in
interfaces that is already available in your computer, or if you prefer, GPIB is still available.
• USB offers the quickest and easiest connection scheme—it’s perfect for small systems and bench
connections.
• Ethernet offers high-speed connections that allow for remote access and control. Choose a local area
network to filter out unwanted LAN traffic and speed up the I/O throughput. Or take advantage of the
remote capabilities and distribute your tests worldwide. Use the graphical Web browser to monitor,
troubleshoot, or debug your application remotely.
• GPIB has many years of proven reliability for instrument communication and can be used in existing
GPIB based test systems.
Remote access and control
The built-in Web browser interface provides remote access and control of the instrument via a Java
applet-enabled browser such as Internet Explorer version 11. Using the Web interface, you can set up,
troubleshoot, and maintain your system remotely: