技术资料.pdf - 第5页

5 Measurem ents You Can Trust Get proven perfor mance fr om Keysigh t instr uments wi th the res olution, r epeatab ility, s peed, and accur acy you’ve co me to expec t. The 3498 0A offers built - in s ignal co nditioni …

100%1 / 47
4
Optimized for Test Systems
The 34980A has the performance you need for medium- to high-density switching/measurement
applications such as design verification, functional test, and data acquisition. Your signals are switched to
the right measurement device without compromising signal integrity. Switch your signals to the optional
internal DMM and achieve optimal throughput on switch closure time. Or, if you prefer, you can easily
connect to external instruments such as DMMs, scopes, power supplies, and more. What’s more, with the
built-in Ethernet interface, you can control the 34980A and collect data from anywhere on the network.
For a complete modular solution, use the 34980A together with PXI modular products when more
capability is required.
The rugged instrument comes with a variety of system-ready features:
Web browser interface shows settings at a glance and provides remote access and control when
using a browser that supports Java applets.
Self-guiding front panel to configure, troubleshoot or view data
Low EMI and efficient system cooling
Heavy-duty cabling and connection options
Flexible rack mounting options
Relay counters help predict end-of-life
In-rack calibration for reduced maintenance time
DMM measurement accuracies include the switch for simple calculations
Make system connections easily and quickly with simple, reliable connection options:
Built-in Ethernet, USB 2.0, and GPIB connectivity
Low-cost, standard 50- or 78-pin Dsub connectors and cables
Detachable terminal blocks with strain relief
Mass interconnect solutions
Keysight Technologies, Inc. IO Libraries Suite enables you to quickly establish an error-free connection
between your PC and instrumentsregardless of vendor. The IO Libraries provide robust instrument
control and enable you to work with the software development environment you choose.
The 34980A provides four 2-wire internal analog buses for easy signal routing. You can route your
measurements directly to the internal DMM, or you can connect to external instruments through the
analog bus connector on the rear of the mainframe. And since you have four 2-wire buses, you can
dedicate one bus for use with the internal DMM and use the other three buses for module extensions or
additional signal routing between modules which can reduce wiring complexity.
You can define up to 500 switch sequences to control complex signal routing and the order of switch
closures. Assign a sequence, give it a name and then execute it with the name you create. Switch
sequences are downloaded and stored in the instrument for ease of programming and increased
throughput.
External trigger capabilities make it easy for you to time and synchronize measurements and other events
and control when to begin or end an acquisition.
5
Measurements You Can Trust
Get proven performance from Keysight instruments with the resolution, repeatability, speed, and accuracy
you’ve come to expect.
The 34980A offers built-in signal conditioning and modular flexibility. When you use it with the internal
DMM, you can configure each channel independently for the measurements you choose. It includes a
variety of features that give you confidence in your measurements:
6½ digits of resolution with .004% of accuracy with DC voltage measurements
Alarms per channelhigh limit, low limit, or both
Math functionsuse Mx+B for custom linear conversions and converting raw inputs
Built-in thermocouple reference for temperature measurements (34921T)
Time-stamped readings
Add more formulas with BenchVue DAQ
The integrated DMM is mounted inside the mainframe and does not consume any of the eight user-
available slots. You can access the DMM through any switch module that connects to the analog bus, or
directly from the analog bus connector on the rear of the mainframe. The internal DMM gives you the
flexibility to measure 11 types of inputs:
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.
6
Modules Provide Flexible System Stimulus
and Control
System controlwith 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 externally to the 34980A mainframe.
Analog sourcesoutput 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 patternssend or receive digital data from your device under test. With onboard memory, you can
output communication protocols and bitstreams 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 are already available in your computer, or if you prefer, GPIB is still available.
USB offers the quickest and easiest connection schemeit’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:
View and modify instrument setup
Open, close, or monitor switches
Send SCPI commands
Define and execute switch scans and switch sequences
View error queue
Get status reports on relay counts, firmware revisions, and more