Agilent 34980A Data Sheet

Agilent 34980A Multifunction Switch/Measure Unit

Data Sheet

• 8-slot mainframe with 19 mix-andmatch plug-in modules so you can create your own custom configuration

• High-performance switching: Up to 560 2-wire multiplexer channels or 1024 matrix cross-points in one mainframe

• Optional built-in 6 1⁄2 -digit DMM lets you make 11 measurements with over 3000 readings/sec

• Easy to integrate: Built-in Ethernet, USB 2.0, and GPIB connectivity, standard connectors and software drivers for most common programming environments

CONFIGURE, CONNECT, GO

If you use automated test equipment for design validation or manufacturing, you now have a cost-effective alternative to PXI and VXI test-system platforms. The 34980A multifunction switch/measure unit provides comparable functionality that is much easier to use than PXI and VXI and costs less. The 34980A helps you lower your cost of test and accelerate your testsystem integration and development.

The 34980A handles system switching up to 20 GHz and provides basic

measurements and system control. It also offers DMM measurements, counter/ totalizer functionality, digital I/O with pattern capabilities, and

analog out-

puts with basic waveforms—

all in one low-cost, compact box. And with its standard connectors and software drivers, computer-standard I/O, and Web browser interface, the 34980A easily integrates into electronic functional test and data acquisition systems.

Flexible switching, measurements, and system control

The 34980A accommodates up to 8 plug-in modules to give you the flexibility you need. Choose from 19 different modules to define your own configuration. You can buy what you need now and add to it or reconfigure it as your requirements change.

Whether you are measuring temperature, AC or DC voltage, resistance, frequency, current, or custom measurements, the 34980A offers the functionality you need in a single box. Switch in different measurements with high-performance signal switching with no external signal conditioning required. Choose between different switch types and topologies with frequency ranges from DC to 20 GHz. The 34980A offers high-density multiplexers for scanning multiple channels, matrices for connecting multiple points at one time, and general purpose switches for simple control and high power needs.

Use the 34980A to route individual signals or monitor multiple signals over a specified period of time— monitor a single channel or multiple channels, set alarms, and identify irregularities.

The 34980A offers flexible choices for system control. You can control external devices such as microwave switches, attenuators, solenoids, and power relays. Or use the digital inputs to sense limit-switch and digital-bus status.

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 remote locations.

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

• Self-guiding front panel to configure, troubleshoot or view data

• Low EMI and efficient system cooling

• Heavy-duty cabling and connection options

• Rack mount options

• Relay counters help predict endof-life

• In-rack calibration for reduced maintenance time

• DMM measurement accuracies include the switch for simple calculations

High-performance unit provides low-cost alternative to PXI and VXI switch and measurement platforms

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

In addition, the 34980A comes with Agilent E2094N IO Libraries Suite 14. Quickly establish an error-free connection between your PC and instruments—regardless of vendor. The IO Libraries provide robust instrument control and work with the software development environment you choose.

Easier signal routing with four 2-wire internal analog buses. 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, reducing your wiring needs.

You can define 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 created.

External trigger capabilities make it easy for you to time and synchronize measurements and other events. This can help you determine when to begin or end an acquisition.

Measurements you can trust

Get proven performance from Agilent 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:

•6

⁄2 digits of resolution with .004% of accuracy with DC voltage measurements

• Alarms per channel—high limit, low limit, or both

• Math functions—use Mx+B for custom linear conversions and converting raw inputs

• Built-in thermocouple reference for temperature measurements (34921T)

• Time-stamped readings

The integrated DMM is mounted inside the mainframe and does not consume any of the eight useravailable 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 perchannel 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, highfrequency 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 on-board memory you can output communication protocols and bit streams or monitor digital input patterns and interrupt when a userdefined 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. 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-enabled browser such as Internet Explorer. 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 sequences

• View error queue

• Get status reports on relay counts, firmware revisions, and more

Additionally, since the Web interface is built into the instrument, you can access it on any operating system that supports the Web browser without having to install any special software. Password protection and LAN lockout are also provided to limit access.

The Web interface makes it easy to set up, troubleshoot and maintain your system remotely.

Works with your choice of software

so you can save time and preserve your software and hardware investments. Program directly with SCPI, or use IVI or LabVIEW software drivers that provide compatibility with the most popular development environments and tools:

• Agilent VEE Pro, Agilent T&M Toolkit (requires Microsoft® Visual Studio®.NET)

• National Instruments LabVIEW, LabWindows/CVI, TestStand, and Switch Executive

• Microsoft Visual Studio.NET, C/C++ and Visual Basic 6

Figure 1 The Web interface makes it easy to set up, troubleshoot and maintain your system remotely.

Power and flexibility to get your job done

Intuitive front panel with self-guiding menus

See results on bright, multiline display

6 1⁄2 digit DMM measurements with 11 functions

Scan multiple channels, close specified channel list, or monitor results on a single channel

Store up to 500,000 readings with timestamp

8-slots connect to optional internal DMM

Use keypad to enter channel number or knob to scroll

Configure measurements by channel

Set up scan lists

External trigger to synchronize events

Built-in Ethernet, USB 2.0, and GPIB interfaces

Access to four 2-wire analog buses

19 plug-in modules to choose from

Optional terminal blocks, standard cables or connector kits

The 34980A mainframe holds up to eight plug-in modules. Mix and match them to create a custom system to meet your switching and system control needs. You can easily add or replace modules as your needs change.

Mix and match 34980A modules to create your own custom configuration

Table 1. 34980A modules at a glance

Max Max BW Scan Thermal

Module Description volts current (MHz) ch/sec offset Comments

Multiplexer modules

34921A 40-channel armature multiplexer w/ ± 300 V 1 A 45 MHz 100 < 3 uV Temperature reference

low thermal offset 4 current channels

Config as 2- or 4-wire

34922A 70-channel armature multiplexer ± 300 V 1 A 25 MHz 100 < 3 uV Config as 2- or 4-wire

34923A 40/80-channel reed multiplexer ± 150 V 0.5 A 45 MHz 500 < 50 uV Config as 1-, 2- or 4-wire

34924A 70-channel reed multiplexer ± 150 V 0.5 A 25 MHz 500 < 50 uV Config as 2- or 4-wire

34925A 40/80-channel optically isolated ± 80 V 0.05 A 1 MHz 1000 < 3 uV Config as 1-, 2- or 4-wire

FET multiplexer

Matrix modules

34931A Dual 4x8 armature matrix ± 300 V 1 A 30 MHz 100 < 3 uV Backplane expandable

34932A Dual 4x16 armature matrix ± 300 V 1 A 30 MHz 100 < 3 uV Backplane expandable

34933A Dual/Quad 4x8 reed matrix ± 150 V 0.5 A 30 MHz 500 < 50 uV Backplane expandable

Config as 1- or 2-wire

General-purpose modules

34937A 28-channel Form C and 300 V 1 A 10 MHz N/A < 3 uV

4-channel Form A 250 VAC 5 A < 3 uV

34938A 20-channel 5-amp Form A 250 VAC 5 A 1 MHz N/A < 3 uV

RF and microwave modules

Insertion Freq Input

Module Description loss Isolation range VSWR impedence Comments

34941A Quad 1x4 50 ohm 3 GHz RF multiplexer 0.6 dB > 58 dB 3 GHz < 1.25 50 Ω @ 1 GHz

34942A Quad 1x4 75 ohm 1.5 GHz RF multiplexer 0.6 dB > 60 dB 1.5 GHz < 1.35 75 Ω @ 1 GHz

34945A/ Microwave switch/attenuator driver Can drive up to 64 external switch coils; 32 SPDT switches,8 multiport switches, 34945EXT 8 attenuators, or your own combination. Expand with additional 34945EXTs.

34946A Dual 1x2 SPDT terminated microwave < 0.42 dB > 85 dB 4 GHz or < 1.15 50 Ω @ 4 GHz

switch < 0.69 dB > 67 dB 20 GHz < 1.30 @ 20 GHz

34947A Triple 1x2 SPDT unterminated < 0.42 dB > 85 dB 4 GHz or < 1.15 50 Ω @ 4 GHz

microwave switch < 0.69 dB > 67 dB 20 GHz < 1.30 @ 20 GHz

System control modules Description

34950A 64-bit digital I/O with memory Eight 8-bit digital I/O channels with programmable polarity, thresholds up to 5 V,

and counter with handshaking protocols and pattern memory. Two 10 MHz frequency counter and

programmable clock output to 20 MHz.

34951A 4-channel isolated D/A converter Output DC voltage up to ± 16 V or DC current up to ± 20 mA.

with waveform memory Output waveforms with a 200 kHz update rate and 16 bits of resolution.

Use on-board memory to create point-to-point waveforms with more than 500,000 points.

34952A Multifunction module with 32-bit DIO, Four 8-bit digital I/O channels, two ± 12-V analog outputs, and a 100 kHz gated totalizer.

2-ch D/A and totalizer

34959A Breadboard module Create your own custom designs with access to the +12 V and +5 V supplies,

16 GPIO ports and 28 relay drive lines.

34980A multiplexer switch modules

The 34980A multiplexer modules can be used to connect one of many different points to a single point. You can connect to an external instrument, or scan multiple analog signals to the internal DMM.

Choose from the following features:

• 1-wire, 2-wire, or 4-wire configurations

• High voltage—up to 300 V, 1 A

• High density—70 2-wire or 80 1-wire channels

• Bandwidths up to 45 MHz

• Temperature measurements with built-in thermocouple reference junction (34921T)

• AC or DC current measurements without external shunts

• Connections via standard 50- or 78-pin Dsub cables or detachable terminal block

Figure 2. 34921A 40-channel armature multiplexer with low thermal offset (bank 2)

Voltage Current Freq/ Ω 2-Wire Ω 4-Wire Thermo- RTD RTD Thermistor AC/DC AC/DC Period couple 2-Wire 4-Wire

34921A Armature Multiplexer Yes Yes Yes Yes Yes Yes Yes Yes Yes

34922A Armature Multiplexer Yes No Yes Yes Yes Yes Yes Yes Yes

34923A Reed Multiplexer (2-wire) Yes No Yes Yes Yes Yes Yes Yes Yes

34923A Reed Multiplexer (1-wire) Yes No Yes Yes No Yes Yes No Yes

34924A Reed Multiplexer Yes No Yes Yes Yes Yes Yes Yes Yes

34925A FET Multiplexer (2-wire) Yes No Yes Yes Yes Yes No Yes No

34925A FET Multiplexer (1-wire) Yes No Yes Yes No Yes No No No

Note: See User’s Guide for additional information.

Table 2. Multiplexer measurement functions

041

042

043

044

Current

Fuse

931

COM 2

Analog Buses

ABus 1

Current

021

022

023

024

025

DMM

(MEAS)

026

027

028

029

030

Bank 2

ABus 2

DMM

(SENS)

031

032

033

034

035

LHLH

ABus 3 ABus 4

923 924922921

036

037

038

039

040

Multiple multiplexers can connect to the built-in analog buses, allowing you to scan up to 560 2-wire channels or 640 1-wire channels in a single mainframe. The 34921A also offers 4 channels for directly measuring current. Or if you need more current channels, shunts can be added to the terminal block for easy current measurements.

The multiplexer modules feature break-before-make connections to ensure that no two signals are connected to each other during a scan. Or, if you prefer, you can control switching manually to create your own switch configuration. All the multiplexer switches have a relay counter to help predict when relays need to be replaced.

Note: The 34923A and 34924A have 100 ohm input protection resistors that limit current and protect the reed relays.

Figure 3. 34923A 40-channel reed multiplexer (bank 1 shown)

Figure 4. 34925A 40/80-channel optically isolated FET mux (shown in 1-wire mode bank 2)

Bank 1

HD*

HD* LD

ABus2 DMM (SENS)

HD*

011

012

013

014

015

HD* LD

913

HD* LD

ABus3 ABus4

HD* LD

016

017

018

019

020

HD* LD

914

HD* LD

COM 1

HD* LD

100Ω∆5 100Ω∆5

100Ω∆5

Analog buses

001

002

003

004

005

100Ω∆5

911

HD* LD

HD*

HD* LD

100Ω∆5

ABus1 DMM (MEAS)

006

007

008

009

000

912

HD* LD

HD*

Analog buses

COM 2

53.1 Ω

+ –

11 Ω32 Ω

Banking circuitry

911

ABus1 DMM (MEAS)

921 922 923 924

041

042

043

044

045

046

047

048

+ –

049

050

051

052

053

054

055

056

057

058

059

060

912

ABus2 DMM (SENS)

061

062

063

064

065

066

067

068

069

070

913

ABus3 ABus4

071

072

073

074

075

076

077

078

079

080

914

Bank 2

Table 3. Multiplexer selection table—specifications and characteristics

34921A 34922A 34923A 34924A 34925A

Channels/configurations 40 2-wire 70 2-wire 80 1-wire 70 2-wire 80 1-wire

20 4-wire 35 4-wire 40 2-wire 35 4-wire 40 2-wire 4-current 20 4-wire 20 4-wire

1.5 A Fused

Switch type

Armature

Armature Reed Reed Optically

latching

latching isolated FET

Input characteristics (per channel)

Max volts ± 300 V

[1]

± 300 V

[1]

± 150 V peak

[2]

± 150 V peak

[2]

± 80 V peak

[2]

Max current (DC, AC RMS) Switch current 1 A 1 A 0.5 A

[5]

/ 0.05 A

[11]

0.5 A

[5]

/ 0.05 A

[11]

0.02 A

[8]

Carry current 2 A 2 A 1.5 A

[5]

/ 0.05 A

[11]

1.5 A

[5]

/ 0.05 A

[11]

Power (W, VA)

[6]

60 W 60 W 10 W 10 W 1.6 W

Volt-Hertz limit 10

General specifications

Offset voltage

[3]

< 3 uV < 3 uV < 50 uV < 50 uV < 3 uV

< 100 uV 1-wire

Initial closed channel res

[3]

< 1.5 Ω < 1.5 Ω < 1.5 Ω

[5]

/200 Ω

[11]

< 1.5 Ω

[5]

/200 Ω

[11]

< 700 Ω

DC Isolation (ch-ch, ch-earth) >10 GΩ >10 GΩ >10 GΩ >10 GΩ >10 GΩ

Leakage current

[3]

N/A N/A N/A N/A 20 nA

[9]

T/C cold junction accuracy

[3, 10]

< 1°C N/A N/A N/A N/A

AC characteristics

Bandwidth at terminal block

[4]

45 MHz 25 MHz 45 MHz

[5]

/4 MHz 25 MHz

[5]

/4 MHz

[11]

1 MHz

10 MHz 1-wire

Crosstalk at terminal block (ch-ch)

[4]

300 kHz -75 dB -75 dB -75 dB -75 dB N/A 1 MHz -75 dB -75 dB -75 dB -70 dB 20 MHz -50 dB -50 dB -50 dB -45 dB 45 MHz -40 dB -40 dB

Capacitance at terminal block HI-LO 150 pF 250 pF 130 pF 200 pF 100 pF LO – earth 150 pF 200 pF 120 pF 170 pF 300 pF (600 pF 1-wire)

General characteristics

Relay life, typical

No load 100 M 100 M 1000 M 1000 M unlimited 10 V, 100 ma 10 M 10 M 10 M 10 M unlimited Rated load 100 k 100 k 10 k 10 k unlimited

Scanning speeds

[7]

100 ch/sec 100 ch/sec 500 ch/sec 500 ch/sec 1000 ch/sec

Open/ close time, typical 4 ms/4 ms 4 ms/4 ms 0.5 ms/0.5 ms 0.5 ms/0.5 ms 0.25 ms/0.25 ms

Analog bus backplane connection Yes Yes Yes Yes Yes

[1] DC or AC RMS voltage, channel-to-channel

or channel-to-earth

[2] Peak voltage, channel-to-channel or

channel-to-earth

[3] Into analog bus. System errors are included

in the internal DMM measurement accuracy specifications

[4] 50 Ω source, 50 Ω load, differential

measurements verified with 4-port network analyzer (Sdd21)

[5] With input resistors bypassed. Bypassing

resistors will reduce lifetime of relays. See the rated load relay life characteristics.

[6] Limited to 6 W of channel resistance power

loss per module

[7] Speeds are for 4-1/2 digits, delay 0, display

off, autozero off, and within bank

[8] DC or peak AC current

[9] Ambient temperature < 30°C

[10] Includes 0.5°C temperature reference

sensor and 0.5°C terminal block isothermal gradient error. Measured under worst case loading of the mainframe. See User’s Guide for information on supported external reference sensors.

[11] With 100 Ω input protection resistors.

34980A matrix switch modules

The 34980A matrix modules are full cross-point matrices that allow you to connect any row to any column. This is a convenient way to connect multiple test instruments to multiple points on a device under test.

Choose from the following features:

• Latching armature relays—300 V, 1 A

• High-speed reed relays—150 V, 0.5 A

• Configurable dual 4x8 or dual 4x16 modules

• Single-wire configuration (34933A)

• Analog bus expandable rows to create larger matrices

• Connections via standard 50-pin Dsub cables or detachable terminal block

Each cross-point in the matrix switch has two wires—a high and a low for the measurement. Or, if you prefer, the 34933A can be configured as a single-wire matrix, increasing the number of channels. The 34933A also has in-rush resistors on each column for added protection.

Combine multiple matrix modules through the 34980A analog buses to create a larger matrix. Two matrix rows also can be connected to the internal DMM for easy measurements.

Combine your matrix with a multiplexer switch to achieve the desired switching topology and get a lowercost solution with better specifications. All the matrix switches include a relay counter to help predict when relays need to be replaced. Use the sequencing feature to easily change between different cross-point setups.

Figure 5. 34932A dual 4x16 armature matrix

Note: The 34933A has 100 ohm input protection resistors to limit current and protect the reed relays.

)

H L

LHLHLHLH

H L

LHLHLHLHLH

921

922

923

924

ABus1 DMM (MEAS)

ABus2 DMM (SENS

ABus3

ABus4

Table 4. Matrix selection table—specifications and characteristics

34931A 34932A 34933A

Channels/configurations dual 4x8 dual 4x16 dual 4x8

8x8 8x16 8x8 4x16 4x32 4x16

quad 4x8, 1-wire

Switch type Armature Armature Reed

latching latching non-latching

Input characteristics (per channel)

Max volts ± 300 V

[1]

± 300 V

[1]

± 150 V peak

[2]

Max current (DC, AC RMS) Switch current 1 A 1 A 0.5 A

[5]

/0.05 A

[8]

Carry current 2 A 2 A 1.5 A

[5]

/0.05 A

[8]

Power (W, VA)

[2, 6]

60 W 60 W 10 W

[7]

Volt-Hertz limit 10

General Specifications

Offset voltage

[3]

< 3 uV < 3 uV < 50 uV

< 100 uV 1-wire

Initial closed channel res

[3]

< 1.5 Ω < 1.5 Ω < 1.5 Ω

[5]

/200 Ω

[8]

DC Isolation (ch-ch, ch-earth) > 10G Ω > 10G Ω > 10G Ω

AC characteristics

Bandwidth at terminal block

[4]

30 MHz 30 MHz 30 MHz

[5]

/4 MHz

[8]

2 MHz 1-wire

Crosstalk at terminal block (ch-ch)

[4]

300 kHz -65 dB -65 dB -65 dB 1 MHz -55 dB -55 dB -55 dB 20 MHz -30 dB -30 dB -40 dB

Capacitance at terminal block HI-LO 50 pF 50 pF 80 pF LO – earth 80 pF 80 pF 75 pF

General characteristics

Relay life, typical

No load 100 M 100 M 1000 M 10 V, 100 ma 10 M 10 M 10 M Rated load 100 k 100 k 10 k

Open/close time 4 ms/4 ms 4 ms/4 ms 0.5 ms/0.5 ms

Analog bus backplane connection Bank 2 Bank 2 Bank 2

[1] DC or AC RMS voltage, channel-to-channel or channel-to-earth

[2] Peak voltage, channel-to-channel or channel-to-earth

[3] Into analog bus. System errors are included in the internal DMM

measurement accuracy specifications

[4] 50 Ω source, 50 Ω load, differential measurements verified (Sdd21)

[5] With input resistors bypassed. Bypassing resistors will reduce

lifetime of relays. See the rated load relay life characteristics.

[6] Limited to 6 W channel resistance power loss per module

[7] Power restrictions allow only 20 channels to be closed at one time

[8] With 100 Ω inpout protection resistors.

34980A general-purpose switch modules

The 34980A general-purpose switches can be used to route signals or to control other system devices. These switches are ideal for device actuation and switching loads or power supplies.

Choose from the following features:

• Form C channels up to 1 A, 50 W

• Form A channels up to 5 A, 150 W

• Armature latching relays

• Simultaneous channel switching

• Temperature sensor to detect overheating conditions

• Connections via standard 50-pin Dsub cables or detachable terminal block

The 34937A is the most versatile general-purpose switch with 28 Form C channels that can switch up to 1 A of current. In addition, this module has four Form A channels that can switch up to 5 A of current. For power

switching applications, the 34938A has 20 5-amp channels in a Form A topology. Each Form A general-purpose switch can handle up to 150 W, enough for many power line-switching applications.

The 34937A and 34938A contain latching armature relays where multiple channels can be closed at the same time. Additionally, for switching reactive loads, the optional terminal blocks have pads for snubbing circuits.

The built-in relay counter helps predict when relays need to be replaced.

Table 5. GP actuator selection table—specifications and characteristics

34937A 34938A

Channels/configurations 28 Form C 20 Form A

4 Form A

Switch type Armature, latching Armature, latching

Input characteristics (per channel)

Max volts (DC, AC RMS)

[1]

Form C – 300 V 30 VDC/250 VAC

Form A – 30 VDC/250 VAC

Max current (DC, AC RMS) Form C – 1 A (2 A carry) 5 A switch

Form A – 5 A switch (8 A carry)

(8 A carry)

Power (W, VA)

[2]

Form C – 60 W

Form A – 150 W 150 W

Volt-Hertz limit 10

General specifications

Offset voltage 3 uV 3 uV

Initial closed channel res Form C – 125 mΩ

Form A – 50 mΩ < 60 mΩ

DC Isolation (ch-ch, ch-earth) > 10G Ω > 10G Ω

AC characteristics

Bandwidth at terminal block

[3]

10 MHz 1 MHz

Channel Isolation at terminal block

[3]

100 kHz 55 dB 60 dB 1 MHz 35 dB 40 dB 10 MHz 15 dB

Capacitance at terminal block CH – CH Form C 12 pF/ Form A 10 pF 65 pF CH – earth Form C 21 pF/Form A 18 pF 105 pF

General characteristics

Relay life no load/rated Form C – 100 M/100 k

Form A – 50 M/30 k 50 M/30 k

Open/close time Form C – 4 ms/4 ms 10 ms/10 ms

Form A – 10 ms/10 ms

Initial/reset relay state Form C – maintain state user configurable

Form A – user configurable

Analog bus backplane connection No No

[1] DC or AC RMS voltage, channel-to-channel or channel-to-earth

[2] Limited to 6 W of channel resistance power loss per module

[3] 50 Ω source, 50 Ω load, differential measurements verified (S21)

Figure 6. 34937A 32-channel Form A/ Form C switch

COM

Channel 001

(1A form C relay)

Channel 028

(1A form C relay)

Channel 029

(5A form A relay)

Channel 032

(5A form A relay)

34980A RF and microwave switch modules

The 34980A offers a variety of RF and microwave switch modules— RF multiplexers, SPDT switching from DC to 20 GHz, or a switch/ attenuator driver module that allows you to control switches or attenuators external to the 34980A mainframe.

34941A/42A—from DC to 3 GHz

The RF switch modules can be used to switch signals from DC to 3 GHz and above. This can be useful for switching signals between oscilloscopes, spectrum analyzers, network analyzers, and other RF test equipment.

Choose from the following features:

• 50- or 75-ohm Quad 4-channel multiplexers

• DC to 3 GHz

• 30 V, 0.5 A, 10 W

The 34941A and 34942A are configured as four independent 1x4 RF multiplexers on a single module. Multiple banks can be connected together to create a larger multiplexer. To prevent ground loops, individual multiplexers are isolated from each other and from the mainframe’s chassis. However, the multiplexer channels can be chassis grounded with a simple change. Both 50-ohm and 75-ohm versions are available.

Figure 7. 34941A Quad 1x4 50 ohm 3 GHz multiplexer

34941A Typical crosstalk

34941A Typical insertion loss

34941A Typical VSRW

101 102 103 104

301

3494xA

302 303 304

COM

COM 404

201 202 203 204

401 402 403

COM

Quad 1x4

RF VUX

xx ohm

0 dB

-10 dB

-20 dB

-30 dB

-40 dB

-50 dB

-60 dB

-70 dB

-80 dB

-90 dB

-100 dB

Channel to channel

10 MHz

Bank to bank

40 MHz 100 MHz 400 MHz 1 GHz 4 GH

Frequency

0.0 dB

0.3 dB

0.6 dB

0.9 dB

1.2 dB

1.5 dB

1.8 dB

2.1 dB

2.4 dB

2.7 dB

3.0 dB 10 MHz

40 MHz 100 MHz 400 MHz 1 GHz 4 GHz

2.0

1.9

1.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

1.0 10 MHz

40 MHz 100 MHz 400 MHz 1 GHz 4 GHz

Frequency

34946A/47A—from DC to 20 GHz

For applications where you need only a few high-frequency switches, the 34946A and 34947A offer singlepole, double-throw switches in either 4-GHz or 20-GHz options. These modules internally mount two or three independent Agilent N1810 series coaxial switches. These switches are well known for their excellent insertion loss, isolation and VSWR specifications. Switch read back capabilities allow you to query the position of the switch. You can choose higher density with the unterminated switches, or select the terminated switches to maintain impedance match.

34942A Typical crosstalk

34942A Typical insertion loss

34942A Typical VSRW

Figure 8. 34946A dual 1x2 SPDT terminated microwave switch

0 dB

-10 dB

-20 dB

-30 dB

-40 dB

-50 dB

-60 dB

-70 dB

-80 dB

-90 dB

-100 dB 10 MHz

40 MHz 100 MHz 400 MHz 1 GHz 2 GHz

Frequency

0.0 dB

0.3 dB

0.6 dB

0.9 dB

1.2 dB

1.5 dB

.8 dB

2.1 dB

2.4 dB

2.7 dB

3.0 dB 10 MHz

40 MHz 100 MHz 400 MHz 1 GHz 2 GHz

Frequency

2.0

1.9

1.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

1.0 10 MHz

40 MHz 100 MHz 400 MHz 1 GHz 2 GHz

Frequency

Banks

2 & 3

Banks

1 & 4

5050 50

101 102COM

34946A Dual 1x2 SPOT Terminated Microwave Switch

201 202COM

Table 6. RF and microwave selection table—specifications and characteristics

DC to 3 GHz DC to 20 GHz

[3]

34941A 34942A 34946A 34947A

Channels quad 1x4 quad 1x4 2 SPDT 3 SPDT

Switch type 50 Ω unterminated, 75 Ω unterminated, 50 Ω terminated 50 Ω unterminated

latching relays latching relays

RF characteristics

Frequency range

[2]

DC to 3 GHz DC to 1.5 GHz DC to 4 GHz DC to 4 GHz

OR OR DC to 20 GHz DC to 20 GHz

Insertion loss

[2]

DC to 4 GHz < 0.42 dB DC to 4 GHz < 0.42 dB

(< 40 C/ 80% RH) @ 20 GHz < 0.69 dB @ 20 GHz < 0.69 dB

100 MHz 0.15 dB 0.15 dB 1 GHz 0.60 dB 0.60 dB 3 GHz 1.40 dB N/A

VSWR DC to 4 GHz < 1.15 DC to 4 GHz < 1.15

@ 20 GHz < 1.30 @ 20 GHz < 1.30 100 MHz 1.03 1.15 1 GHz 1.25 1.35 3 GHz 1.55 N/A

Isolation (dB)

[2]

Contact factory Contact factory DC to 4 GHz > 85 dB DC to 4 GHz > 85 dB

at 20 GHz > 67 dB at 20 GHz > 67 dB 100 MHz 80 dB 80 dB 1 GHz 58 dB 60 dB 3 GHz 40 dB N/A

Spurious noise

below 1.3 GHz -140 dBm -140 dBm 80 dB 80 dB

Risetime < 80 ps < 160 ps N/A N/A

Signal delay < 1 ns < 1 ns N/A N/A

Capacitance < 30 pF < 30 pf N/A N/A

Switching characteristics

Max volts

[1]

30 V 30 V 7 VDC 7 VDC

Max current 0.5 A 0.5 A N/A N/A

Max power (W) 10 W

[5]

10 W

[5]

1 W @ 7 VDC, 50 W peak

[4]

1 W @ 7 VDC, 50 W peak

[4]

Offset voltage 10 uV 10 uV N/A N/A

Initial channel resistance 1 Ω 1 Ω N/A N/A

Volt-Hertz limit 2 x 10

2 x 10

General characteristics

Relay life 300,000 at 30 V/10 mA load; 300,000 at 30 V/10 mA load > 5 M cycles, > 5 M cycles,

100,000 at 10 W load RF SAmeas 100,000 at 10 W load RF SAmeas 1 M w/drive 28-32 VDC 1 M w/drive 28-32 VDC

Open/close time 18 ms/18 ms 18 ms/18 ms < 15 ms/15 ms < 15 ms/15 ms

Connector type SMA Mini 75 Ω SMB SMA SMA

Analog bus backplane No No No No connection

[1] Channel-to-earth

[2] 50 Ω source, 50 Ω load (75 Ω for 34942A)

[3] For more detailed specifications, see the N1810TL

for the 34946A and N1810UL for the 34947A

[4] 10 usec maximum duration

[5] Max power is 1 W between 30 MHz and 1 GHz

for CISPR 11 compliance

34945A/34945EXT microwave switch/attenuator driver

This module allows you to control switches attenuators, and other devices external to the 34980A. The 34945A/ 34945EXT provides the power and control signals for many of the most popular microwave switches and attenuators. One 34945A/34945EXT combination can drive up to 64 switch coils—that’s 32 standard SPDT switches. The 34945A/EXT can be extended by adding additional 34945EXT boards. The first 34945EXT is powered by the mainframe. You can add up to seven additional 34945EXT boards with user supplied power. Multiple switch operations are performed in sequential order, or for faster, simultaneous switching, you can connect an external power supply to the 34945EXT.

The Y1150A-Y1155A distribution boards enable simple connections to the external switches. The distribution boards plug onto the 34945EXT and are used to route the power and control signals from the driver module to the switches using standard cables.

The 34945A/34945EXT also has sensing capabilities that allows read back of the actual position of the switch or attenuator. Drive signals for LED indicators are also provided to give a visual indication of the switch position.

The following microwave switches and attenuators are supported with the Y1150A-Y1155A distribution boards:

• N181x series SPDT switches

• 8762/3/4 series SPDT switches (screw terminals)

• 87104x/106x multiport switches

• 87406x series matrix switches

• 87204x/206x series multiport switches

• 87606x series matrix switches

• 87222x transfer switches

• 849x series attenuators

• 8490x series attenuators

• Screw terminal connections

General specifications

34945EXT switch drive (64 channels, low side drive mode)

Driver off voltage (max) 30 V

Driver off leakage current 500 uA

Driver on current (max) 600 mA

Driver on voltage (max) 0.5 V @ 600 mA

34945EXT switch drive (64 channels, TTL drive mode)

Hi output voltage 3 V @ I

out

= 2 mA

Lo output voltage 0.4 V @ Iin= 20 mA

Lo input Current 20 mA

34945EXT position indicator sense inputs

Channels 64

Lo input voltage (max) 0.8 V

Hi input voltage (min) 2.5 V

Input resistance >100 kΩ @ Vin≤ 5 V

>20 kΩ @ Vin> 5 V

Maximum input voltage 30 V

34945EXT switch drive power supply (34945EXT powered by 34945A)

Voltage 24 V nominal (external

power supply required for switches needing more than 24 V)

Current 100 mA continuous +

200 mA (15 msec pulse, 25% duty cycle)

34945EXT external power connection

Voltage range 4.75 V to 30 V

Current limit 2 A

LED indicator (Current mode divers)

Channels 64

Supply voltage 5 V nominal

LED drive current 5 mA nominal

(prog 1-20 mA)

Driver compliance voltage 0.8 V

34945EXT dimensions

11.2” x 4.5” x 1.5” high with distribution boards installed

Maximum 8 34945 Ext’s per mainframe

Note: See the Application note: Configuring an RF1 Microwave Switch System (5989-2272EN) for configuration details.

Figure 9. 34945A/34945EXT microwave switch/attenuator driver

34945A module

Y1150A -Y1155A distribution boards ordered separately

34945EXT extender board holds 4 distribution boards

34950A 64-bit digital I/O with memory and counter

This module can be used to simulate or detect digital patterns. It has eight 8-bit digital I/O channels with handshaking, pattern memory, two 10 MHz counters with gate functions, and a programmable clock output.

Digital input/output

The digital I/O bits are organized into two banks of 32-bits. The I/O bits can be configured and programmed as inputs or outputs in 8-bit channels. The digital outputs can be configured as active drive or open drain outputs with a 10 kΩ pull up. User supplied pull up resistors for up to 5 V outputs are also acceptable. The digital inputs have programmable thresholds up to 5 V for compatibility with most digital logic standards.

The onboard pattern memory can be used to select and output digital stimulus or bitstream patterns, or to capture external digital data. Each bank has independent memory and directional control so that one bank can output data while the other captures data. The memory can be divided up to 64 Kbytes per 8-bit channel.

Specifically, the digital I/O channels also have:

• Variable active high drive output

from 1.65 V to 5 V or open drain

• Variable input thresholds from

0 V to 5 V

• Configurable handshaking

protocols including synchronous, and strobe

• Programmable polarity

• Source or sink up to 24 mA with a

max

of 400 mA per module.

• Internal alarming for maskable pattern match

• 1 hardware pattern interrupt per bank

• Connections via standard 78-pin Dsub cables or detachable terminal block

Frequency counter/totalizer

The two channels can be used to count digital events, frequency, period, duty cycle, totalize, and pulse width. The counter/totalizer also includes

• Programmable gate functionality

• Programmable input thresholds levels 0 V to 3 V

Digital input/output characteristics

Eight 8-bit channels: 8 bits wide, input or output, non-isolated

Vin 0 V – 5 V

[1]

Vout 1.65 V – 5V

[1, 2]

Iout (max) 24 mA

[2]

Frequency (max) 10 MHz

[3]

Load

(max) 400 mA

tr+ tf(typ) 6 ns

[5]

Handshake lines

Vin 0 – 5 V

[4]

Vout 1.65 – 5 V

[2, 4]

I out (max) 24 mA

[2]

Frequency (max) 10 MHz

Counter function characteristics

Maximum freq 10 MHz (max) 50% duty cycle

Vin 0 V – 5 V

Totalizer function characteristics

Maximum count 2^32 – 1 (4,294,967,296)

Max input freq 10 MHz (max),

rising or falling edge programmable

Vin 0 V – 5 V

Gate input 0 V – 5 V

System clock generator characteristics

Frequency 20 MHz – 10 Hz configurable

divide-by-n 24-bits, programmable on/off

Vout 1.65 V – 5 V

[2]

Accuracy: 100 ppm

[1] Configurable by 8-bit channel

[2] Lower current drive at lower voltages

[3] From memory with handshaking

[4] Configurable by bank

[5] 5 V, 50 pF load

34980A system control modules

Figure 10. 34950A 64-channel digital I/O

Bank 1 Bank 2

INTR

8…%

DIO

bank

1…8

Bit0

Bit7 Bit8

Bit15 Bit16

Bit23 Bit24

Bit31

H0 H1 H2

•

Channel

101

Channel

102

Channel

103

Channel

104

8…%

DIO

bank

8…%

2…8

8…%

INTR

Bit0

Channel

•

201

•

Bit7 Bit8

Channel

•

202

•

Bit15 Bit16

Channel

•

203

•

Bit23 Bit24

Channel

•

204

•

Bit31 H0

H1 H2

32 Bits

Counter/

totalizer

1…8

Counter/

totalizer

2…8

Gate

Channel

301

Channel

302

24 Bits

Clock

out

20 MHz – 10 Hz

CLK

34951A 4-channel isolated D/A converter with waveform memory

This module has four independent, isolated channels that output DC voltage up to ± 16 V or DC current up to ± 20 mA. The gain and offset can be adjusted on-the-fly. Each channel can be controlled manually, or use the onboard memory to download a waveform. The 500k of memory is global and can store up to 32 waveforms. Any waveform can be dynamically allocated among one or more channels and output as a point-topoint arbitrary waveform generator at up to 200k points/sec. You can use the standard sine, square or ramp wave shapes provided or define your own wave shape using over 500,000 points and output to a device under test. There is also a single CLK that can be divided down for each channel independently.

The calibration command connects the D/A converters to the internal DMM to be automatically calibrated. Connections to the module can be made via standard 50-pin Dsub cables or a detachable terminal block.

General specifications

Maximum update rate: 200 kHz point-to-point

Monotonic : to 16-bits

Isolation: > 80 VDC/AC peak

(chan-to-chassis or chan-to-chan)

Synchronization: Software commands

or external trigger

Internal/external CLK accuracy: 100 ppm

AC accuracy: Not specified

DC voltage

Amplitude: ± 16 V up to 10 mA

Resolution: 16-bits = 500 uV

Amplitude accuracy (DC): ± (0.05% + 3.0 mV

(90 days, Tcal ± 5°C or Cal:MOD?: ± 5°C)

Ripple and noise: < 2 mVrms, 20 Hz to

250 kHz into 10 kΩ load

Settling time: 40 uS (-full scale to +full

scale step, single channel, to rated accuracy)

Output impedance: < 1 Ω with the load

sensed

DC current

Range: ± 20 mA

Resolution: 16-bit = 630 nA

Accuracy: ± (% value + amps)

(temperature within ± 5°C of Tcal or *Cal?) 90-day: ± (0.09% + 5.0 uA)

Ripple and noise: < 2 uArms, 20 Hz to

250 kHz into 250 Ω

Compliance voltage: ± 12 V

Max open circuit voltage: < ± 22 V

Phase-locking I/O trigger characteristics

Trigger input

Input level: TTL compatible

(3.3 V logic, 5 V tolerant)

Slope: Rising or falling,

selectable

Pulse width: > 100 nS

Input impedance: > 10 kΩ, DC coupled

Trigger output

Level: TTL compatible

into 1 kΩ (3.3 V logic)

Output impedance: 50 Ω typical

Clock input

Input level: TTL compatible

(3.3 V logic, 5 V tolerant)

Input impedance: > 10 kΩ, DC

Maximum rate: 10 MHz

Clock output

Level: TTL compatible

into 1k Ω (3.3 V logic)

Output impedance: 50 Ω typical

Maximum rate: 10 MHz

Accuracy: ± 100 ppm

Figure 11. 34951A 4-channel isolated D/A converter

16 Bits

DAC 1

DAC 2

DAC 3

DAC 4

Channel

User supplied clock (bidirectional)

Internal clock

Internal trigger

Immediate

data

Waveform

memory

16 Bits

Calibration constant

in non-volatile memory

User supplied trigger (bidirectional)

HI voltage sense

DACx

HI LO

LO voltage sense

Disconnect

Customer system

Calibration bus

(ABUS 1)

34952A multifunction module with 32-bit DIO, 2-channel D/A and totalizer

The multifunction module offers the flexibility you need for system control. The 34952A has four 8-bit digital I/O channels, a 100-kHz gated totalizer, and two ± 12 V analog outputs—all on a single earth-referenced module. The digital inputs and totalizer input may be included in a scan list. Alarm limits for the digital and totalizer inputs are evaluated continuously, capturing and logging alarm conditions even between scans. Connections can be made via standard 50-pin Dsub cables or detachable terminal block. The 34952T terminal block has a pinout for connection to an external opto 22 board.

Digital input/output characteristics

Four 8-bits channels, 8 bits wide, input or output, non-isolated

Vin(L) < 0.8 V (TTL)

Vin(H) > 2.0 V (TTL)

Vout(L) < 0.8 V @ Iout = -400 mA

Vout(H) > 2.4 V @ Iout = 1 mA

Vin(H) max < 42 V with external open

drain pull-up

Alarm Maskable pattern match

or state change

Speed 4 ms (max) alarm sampling

Latency 5 ms (typical) to 34980A

alarm output

Read/write speed 95/s

Totalize input characteristics

Max count 2 26- 1

Totalize input 100 kHz (max) rising or

falling edge, programmable

Signal level 1 Vp-p (min) 42 Vpk (max)

Threshold 0 V or TTL

Gate input TTL-Hi, TTL-Lo, or none

Count reset Manual or read + reset

Read speed 85 rds/s

Analog output characteristics

DAC 1, 2 ± 12 V, non-isolated

Resolution 1 mV

IOUT 10 mA max

Settling time 1 ms to 0.01% of output

Accuracy ± (% of output + mV)

1 year (0.25% + 20 mV)

Temp. coefficient ± (0.015% + 1mV)/°C

Figure 12. 34952A multifunction module

8« %

32 Bits

16 Bits

DIO

bank

Totalizer

DAC 1« 8

DAC 2« 8

Bit0

•

• Bit7

Bit8

•

• Bit15

Bit16

•

• Bit23

Bit24

•

• Bit31

Cnt H Cnt L Gate

Gate

Channel

001

Channel

002

Channel

003

Channel

004

Channel

005

Channel

006

Channel

007

34959A breadboard module

Use this module to create your own custom designs inside the 34980A mainframe. You can control your custom circuits with access to both the +12 V and +5 V supplies, 28 relay drive lines and two 8-bit GPIO ports. Your design can be isolated from the analog buses or connected by loading the backplane switches. Simply mount your custom PC board or other components into the space provided and connect via the two ribbon connectors provided. The module is provided with two 50- or 78-pin Dsub connector openings. For custom connections, use the detachable flat faceplates for easy modification. You can program your circuitry using standard read and write commands in SCPI.

General specifications

Max module power dissipation 6 W

Power available 12 V regulation no load to full load 10% 5 V regulation no load to full load 5% Max power from 12 V 6 W Max power from 5 V 1 W

Relay drives 28, sink up to 100 mA

GPIO ports

Chan 1 and Chan 2: 8 configure bits as input or output

Chan 3: 3 output bits

Available board dimensions:

5.4 x 7.5 x either 0.9 inches height without PC board, or 0.7 inches high with PC board.

Figure 13. 34959A breadboard module

34980A Mainframe Custom PC Board

34980A Analog

Buses

34980A

Mainframe

Digital

Backplane

34959A Breadboard PC Board

Analog Bu s

Relays

(4)

32 Relay Drives

Digital

I/O

+12V

+5V

16 Bits

Ribbon

Cable

Connector

(P101)

Ribbon

Cable

Connector

(P102)

Custom

Circuitry

and

Field

Wiring

34980A system specifications and characteristics

DMM accuracy ± (% of reading + % of range)

Includes measurement error, switching error, and transducer conversion error

Measurement including switch error

[1]

Function Range

[4]

Frequency, etc. 24 hour

[2,3]

90 days 1 year Temperature

Tcal ± 1°C Tcal ± 5°C Tcal ± 5°C coefficient

>Tcal ± 5°C

DC voltage 100.0000 mV 0.0030 + 0.0035 0.0040 + 0.0040 0.0050 + 0.0040 0.0005 + 0.0005 (with 34921A/22A/ 1.000000 V 0.0020 + 0.0006 0.0030 + 0.0007 0.0040 + 0.0007 0.0005 + 0.0001 31A/32A)

[10]

10.00000 V 0.0015 + 0.0004 0.0020 + 0.0005 0.0035 + 0.0005 0.0005 + 0.0001

100.0000 V 0.0020 + 0.0006 0.0035 + 0.0006 0.0045 + 0.0006 0.0005 + 0.0001

300.0000 V 0.0020 + 0.0020 0.0035 + 0.0030 0.0045 + 0.0030 0.0005 + 0.0003

True RMS AC 100.0000 mV 3 Hz-5 Hz 1.00 + 0.03 1.00 + 0.04 1.00 + 0.04 0.100 + 0.004 voltage

[5]

to 100.0000 V 5 Hz-10 Hz 0.35 + 0.03 0.35 + 0.04 0.35 + 0.04 0.035 + 0.004

10 Hz-20 kHz 0.04 + 0.03 0.05 + 0.04 0.06 + 0.04 0.005 + 0.004

20 kHz-50 kHz 0.10 + 0.05 0.11 + 0.05 0.12 + 0.05 0.011 + 0.005 50 kHz-100 kHz 0.55 + 0.08 0.60 + 0.08 0.60 + 0.08 0.060 + 0.008 100 kHz-300 kHz

[6]

4.00 + 0.50 4.00 + 0.50 4.00 + 0.50 0.20 + 0.02

300.0000 V 3 Hz-5 Hz 1.00 + 0.05 1.00 + 0.08 1.00 + 0.08 0.100 + 0.008 5 Hz-10 Hz 0.35 + 0.05 0.35 + 0.08 0.35 + 0.08 0.035 + 0.008 10 Hz-20 kHz 0.04 + 0.05 0.05 + 0.08 0.06 + 0.08 0.005 + 0.008 20 kHz-50 kHz 0.10 + 0.10 0.11 + 0.12 0.12 + 0.12 0.011 + 0.012 50 kHz-100 kHz 0.55 + 0.20 0.60 + 0.20 0.60 + 0.20 0.060 + 0.020 100 kHz-300 kHz

[6]

4.00 + 1.25 4.00 + 1.25 4.00 + 1.25 0.20 + 0.05

Resistance

[7]

100.0000 Ω 1 mA 0.0030 + 0.0035 0.008 + 0.004 0.010 + 0.004 0.0006 + 0.0005

1.000000 kΩ 1 mA 0.0020 + 0.0006 0.008 + 0.001 0.010 + 0.001 0.0006 + 0.0001

10.00000 kΩ 100 uA 0.0020 + 0.0005 0.008 + 0.001 0.010 + 0.001 0.0006 + 0.0001

100.0000 kΩ 10 uA 0.0020 + 0.0005 0.008 + 0.001 0.010 + 0.001 0.0006 + 0.0001

1.000000 MΩ 5.0 uA 0.002 + 0.001 0.008 + 0.001 0.010 + 0.001 0.0010 + 0.0002

10.00000 MΩ 500 nA 0.015 + 0.001 0.020 + 0.001 0.040 + 0.001 0.0030 + 0.0004

100.0000 MΩ 500 nA/10 MΩ 0.300 + 0.010 0.800 + 0.010 0.800 + 0.010 0.1500 + 0.0002

Frequency and 100 mV to 300 V 3 Hz-5 Hz 0.10 0.10 0.10 0.005 period

[8]

5 Hz-10 Hz 0.05 0.05 0.05 0.005 10 Hz-40 Hz 0.03 0.03 0.03 0.001 40 Hz-300 kHz 0.006 0.01 0.01 0.001

DC current 10.00000 mA < 0.1 V burden 0.005 + 0.010 0.030 + 0.020 0.050 + 0.020 0.002 + 0.0020 (34921 only) 100.0000 mA < 0.6 V 0.010 + 0.004 0.030 + 0.005 0.050 + 0.005 0.002 + 0.0005

1.000000 A < 2 V 0.050 + 0.006 0.080 + 0.010 0.100 + 0.010 0.005 + 0.0010

True RMS AC current 10.00000 mA 3 Hz-5 Hz 1.00 + 0.04 1.00 + 0.04 1.00 + 0.04 0.100 + 0.006 (34921A only) and

[5]

5 Hz-10 Hz 0.30 + 0.04 0.30 + 0.04 0.30 + 0.04 0.035 + 0.006

1.0 A 10 Hz-5 kHz 0.10 + 0.04 0.10 + 0.04 0.10 + 0.04 0.015 + 0.006

100.0000 mA

[9]

3 Hz-5 Hz 1.00 + 0.5 1.00 + 0.5 1.00 + 0.5 0.100 + 0.006 5 Hz-10 Hz 0.30 + 0.5 0.30 + 0.5 0.30 + 0.5 0.035 + 0.006 10 Hz-5 kHz 0.10 + 0.5 0.10 + 0.5 0.10 + 0.5 0.015 + 0.006

[1] One hour warm-up and a fixed configuration

with slow AC filter, sine wave input, and 6 1⁄2 digits. Temperature within ± 5°C of temperature at calibration (Tcal between 18-28°C).

[2] 90 minute warm-up and a fixed configuration

and 6 1⁄2 digits. Temperature within ± 1°C of temperature at calibration (Tcal between 18-28°C).

[3] Relative to calibration standards

[4] 20% over range on all ranges except 300VDC

and AC ranges and 1 ADC and AC current ranges

[5] For singe wave input > 5% of range. For

inputs from 1% to 5% of range and < 50 kHz add 0.1% of range additional error. For AC filter slow.

[6] Typically 30% of reading error at 1 MHz,

limited to 1 x 108 volt-hertz

[7] For 4-wire ohms or 2-wire ohms using scaling

to remove offset. Add 4 ohms additional error to 2-wire ohms function without scaling. 34923/24/25/33 have series resistance that may limit low 2-wire ohm measurements.

[8] Input > 100 mV. For 10 mV inputs multiply

% of reading error x 10. For 1 sec aperture (6 1/2 digits).

[9] Specified only for inputs > 10 mA.

For AC filter slow.

[10] Add 50 uV error for 34923/24/33.

Additional Low Frequency Error for ACV, ACI (% of reading)

Frequency

AC Filter Slow AC Filter Medium AC Filter Fast

10 Hz- 20 Hz 0 0.74 – 20 Hz - 40 Hz 0 0.22 – 40 Hz - 100 Hz 0 0.06 0.73 100 Hz - 200 Hz 0 0.01 0.22 200 Hz - 1 kHz 0 0 0.18 > 1 kHz 0 0 0

Additional Error for Frequency, Period (% of reading)

Aperature (Digits)

Frequency 1 second 0.1 seconds 0.01 seconds

(61/2digits) (51/2digits) (41/2digits)

3 Hz- 5 Hz 0 0.12 0.12 5 Hz - 10 Hz 0 0.17 0.17 10 Hz - 40 Hz 0 0.2 0.2 40 Hz - 100 Hz 0 0.06 0.21 100 Hz - 300 Hz 0 0.03 0.21 300 Hz - 1 kHz 0 0.01 0.07 > 1 kHz 0 0 0.02

Typical system speeds (Measurements made on a 3.2GHz PC running VB6 in Windows XP Pro)

Single Channel Reading times in msec Direct measurements – direct to I/O Direct Measurement

(includes switch, measure time and I/O time) to Memory(GPIB)

Single channel

[1] [2]

GPIB USB 2.0 LAN Measurement into msec msec (w/ VXI 11) msec memory msec

Single channel, DCV 2.83 3.14 4.57 1.9

Single channel, ACV 5.00 5.35 5.75 4

Single channel, ohms 2.91 3.14 4.65 1.9

Single channel while changing 9.52 10.64 11.76 8.4 scale (eg MEAS DCV 10 / MEAS DCV 1)

Single channel while changing 128 120 120 120 function (eg. MEAS ACV / MEAS DCV)

Command execution time

[3]

34925A Open or Close 0.7 0.9 1.6

Read? 2.9 3.3 4.7 Close/Read/Open 4.8 5.3 6.5 Init/*WAI 1.9 2.1 3 Close/Init/Open 3.7 4.1 4.7

34923A Open or Close 0.9 1.2 1.8

Read? 2.9 3.3 4.7 Close/Read/Open 5.3 5.8 6.5 Init/*WAI 1.9 2.1 3 Close/Init/Open 4.2 4.7 5.2

34921A Open or Close 4.7 5 5.3

Read? 2.9 3. 3 4.7 Close/Read/Open 14 15 15 Init/*WAI 1.9 2.1 3 Close/Init/Open 12.4 14 14

[1] Readings were made with minimum NPLC, delay 0, display off, autozero off. [2] All times include the issue of “READ?” and the retrieval of data. [3] CLOSE or OPEN bus transfer times allowed to overlap previous command. Command parse times overlap current activity until IO latency dominant.

Temperature measurement accuracy ± (% of reading + % of range)

Temperature 1-year accuracy Type Best range

[1]

Extended range

[1]

Temp Coefficient

Thermocouple B 1100°C to 1820°C 1.2°C 400°C to 1100°C 1.8°C 0.03°C (34921A only, E -150°C to 1000°C 1.0°C -200°C to -150°C 1.5°C 0.03°C includes cold J -150°C to 1200°C 1.0°C -210°C to -150°C 1.2°C 0.03°C junction accuracy K -100°C to 1200°C 1.0°C -200°C to -100°C 1.5°C 0.03°C on terminal block) N -100°C to 1300°C 1.0°C -200°C to -100°C 1.5°C 0.03°C

R 300°C to 1760°C 1.2°C -50°C to 300°C 1.8°C 0.03°C S 400°C to 1760°C 1.2°C -50°C to 400°C 1.8°C 0.03°C T -100°C to 400°C 1.0°C -200°C to -100°C 1.5°C 0.03°C

RTD Rofrom -200°C to 600°C 0.06°C 0.003°C

49 Ω to 2.1 K Ω

Thermistor 2.2 k, 5 k, 10 k -80°C to 150°C 0.08°C 0.002°C

[1] For total measurement accuracy, add temperature probe error

Single channel measurement rates—DMM reading rates

[1] [2]

Function Resolution Rds/s

DCV 4-1/2 digits (0.02 plc) 3000

5-1/2 digits (1 plc) 59 6-1/2 digits (10 plc) 6

2-wire resistance 4-1/2 digits (0.02 plc) 2000

5-1/2 digits (1 plc) 58 6-1/2 digits (10 plc) 6

Thermocouple (0.02 plc) 2000

0.1°C (1 plc) 59

RTD/Thermistor 1°C (0.02 plc) 1900

0.1°C (1 plc) 58

0.01°C (10 plc) 6

ACV 6-1/2 fast (200 Hz) 350

6-1/2 Med (20 Hz) 350 6-1/2 slow (3 Hz) 300

Frequency, period 4-1/2 digits (10 ms) 70

5-1/2 digits (100 ms) 9 6-1/2 digits (1 s gate) 1

[1] Reading speeds for 60Hz; autozero OFF

[2] For fixed function and range, readings to memory, scaling and alarms off, autozero OFF

Scanning measurement rates to bus or memory

Direct measurements – direct to I/O Measurement

(includes switch, measure time and I/O time) into memory

Scanning channels

[1]

GPIB USB 2.0 LAN (w/ VXI 11) Into memory

ch/sec ch/sec ch/sec ch/sec

Scanning DCV or Ohms

34925A 920 860 980 1000

34923A/24A 588 572 605 625

34921A/22A 109 109 109 109

Scanning ACV

[2]

34925A 318 315 323 318

34923A/24A 260 260 260 260

34921A/22A 88 88 88 88

Scanning temperature

34921A 109 109 109 109

Scanning digital in

34950A 660 592 815 1038

[1] Speeds are for 4 1⁄2 digits, delay 0, display off, autozero off.

Scanning is within bank on the same module. Add 10ms for between banks or modules.

[2] Add additional time for filter setting on ACV.

Data out of memory to LAN, USB, or GPIB (data transfer rate with 1000 channel blocks)

GPIB USB 2.0 LAN (w/ VXI 11)

[1]

rds/sec rds/sec rds/sec

Readings 2560 2400 3542

readings with timestamp 1304 1230 1826

readings with all format options ON 980 926 1361

[1] LAN large block throughput rate is increased by approximately 30% using LAN sockets

Measurement characteristics with optional internal DMM

DC voltage

Measurement method Continuously integrating multi-slope

III A-D converter

A-D linearity 0.0002% of reading + 0.0001% of

range on 10 V range

Input resistance 100 mV, 1 V, 10 V ranges Selectable 10 M Ω or > 10,000 M Ω 100 V, 300 V ranges 10 M Ω ±1%

Input bias current < 50 pA at 25°C

Input protection 300 V all ranges

True RMS AC voltage

Measurement method AC coupled True RMS—measures

the AC component of the input with up to 300 VDC of bias on any range

Crest factor Maximum of 5:1 at full scale

Additional crest factor errors (non-sinewave) Crest factor 1-2 0.05% of reading

Crest factor 2-3 0.15% of reading Crest factor 3-4 0.30% of reading Crest factor 4-5 0.40% of reading

AC Filter Bandwidth: Slow 3 Hz - 300 kHz Medium 20 Hz - 300 kHz Fast 200 Hz - 300 kHz

Input impedance 1 M Ω ± 2% in parallel with 150 pF

Input protection 300 Vrms all ranges

Resistance

Measurement method Selectable 4-wire or 2-wire ohms

Current source referenced to LO input

Offset compensation Selectable on 100 Ω, 1k Ω,

10k Ω ranges

Maximum lead resistance 10% of range per lead for 100 Ω

and 1k Ω ranges. 1k Ω on all other ranges

Input protection 300 V on all ranges

Frequency and period

Measurement method Reciprocal counting technique

Voltage ranges Same as AC voltage function

Gate time 1s, 100 ms, or 10 ms

Measurement timeout Selectable 3 Hz, 20 Hz, 200 Hz LF limit

Measurement Consideration (Frequency and Period)

All frequency counters are susceptible to error when measuring low-voltage, low-frequency signals. Shielding inputs from external noise pickup is critical for minimizing measurement errors.

DC current

Shunt resistance 5 Ω for 10 mA, 100 mA;

0.1 Ω for 1 A

Input protection 1A 250 V fuse on 34921A module

True RMS AC current

Measurement method Direct coupled to the fuse and shunt.

AC coupled True RMS measurement (measures the ac component only)

Shunt resistance 5 Ω for 10 mA; 0.1 Ω for 100 mA, 1 A

Input protection 1A 250 V fuse on 34921A module

Measurement characteristics with optional internal DMM (Continued)

Thermocouple

Conversion ITS-90 software compensation

Reference junction type Internal, fixed, or external

Open thermocouple check Selectable per channel. Open > 5 k Ω

Thermistor 44004, 44007, 44006 series

RTD a = 0.00385 (DIN) and a = 0.00392

Measurement noise rejection 60 (50) Hz

[1]

DC CMRR 140 dB AC CMRR 70 dB

Integration time Normal mode rejection

[2]

200 plc/3.33 s (4 s) 105 dB

[3]

100 plc/1.67 s (2 s) 100 dB

[3]

20 plc/333 ms (400 ms) 95 dB

[3]

10 plc/167 ms (200 ms) 90 dB

[3]

2 plc/33.3 ms (40 ms) 85 dB 1 plc/16.7 ms (20 ms) 60 dB < 1 plc 0 dB

DC Operating Characteristics

[4]

Function Digits

[5]

Readings

Additional RMS Noise Error

DCV

[7]

, DCI, and 6

0.6 (0.5) 0% of range

Reistance (≤10 kΩ) 6

6 (5) 0% of range

60 (50) 0.001% of range

300 0.001% of range

[6]

600 0.01% of range

[6]

Autozero OFF Operation

Following instrument warm-up at calibration temerature ±1°C and <10 minutes, add 0.0002% range additional error +5 µV. (For 300 VDC, instead of .0002% of range, need .00066% of range)

Settling Considerations

Reading settling times are affected by source impedance, low dielectric absorptin characteristics, and input signal changes.

AC Operating Characteristics

[8]

Function Digits

[9]

Readings/s

AC Filter

ACV, ACI: 6

7 sec/reading Slow (3 Hz)

1 Medium (20 Hz)

[10]

Fast (200 Hz)

10 Fast (200 Hz)

uxç31ç33 Ça 32e´

100

[11]

Fast (200 Hz)

[1] For 1 KΩ unbalance in LO lead [2] For power line frequency ± 0.08% [3] For power line frequency ± 1% use 75 dB or ± 2.5% use 60 dB [4] Reading speeds for 60 Hz and (50 Hz) operation; autozero OFF [5] 6

digits = 22 bits; 5

digits = 18 bits; 4

digits = 15 bits [6] Add 20 µV for DCV, 4 µA for DCI, or 20 mΩ for resistance [7) For 300 VDC, multiply the additional noise error by 3.3. [8] Maximum reading rates for 0.01% of AC step additional error.

Additional settling delay required when input DC level varies.

[9] 6

digits = 22 bits; 5

digits = 18 bits; 4

digits = 15 bits [10] For external trigger or remote operation using default settling delay

(Delay Auto)

[11] Maximum limit with default settling delays defeated

System specifications

Scanning inputs

Analog: 34921A, 34922A, 34923A, 34924A, and

34925A multiplexer channels

Digital: 34950A/52A digital in and totalize

Scan triggering

Source Interval, external, button press, software,

or on monitor channel alarm

Scan count 1 to 50,000 or continuous

Scan interval 0 to 99 hours; 1ms step size

Channel delay 0 to 60 seconds per channel; 1 ms step size

External trig delay < 2 ms. With monitor on < 200 ms

External trig jitter < 2 ms

Alarms

Analog inputs Hi, Lo, or Hi + Lo evaluated each scan

Digital inputs 34950A/52A digital in maskable pattern

match or state change

34950A/52A frequency and totalize: Hi limit only

Monitor channel Alarm evaluated each reading

Alarm outputs 4 TTL compatible

Selectable TTL logic Hi or Lo on fail

Latency 5 ms (typical)

Memory

Type Volatile

Readings 500,000 with timestamp, readable during scan

States 5 instrument states with user label

Alarm queue Up to 20 events with channel number, reading,

and timestamp

System features

Per-channel math Individual Mx+B scaling and calculated real Min/max/average time

Power fail recovery Save switch states

Relay maintenance Counts each relay closure and stores on

module User resettable

Real-time clock Battery-backed, 20-year typical life

General specifications

Power supply Universal 100 V to 240 V ± 10%

Power line frequency 50 – 60 Hz ± 10% automatically sensed

Power consumption 150 VA

Operating environment Full accuracy for 0°C to 55°C

Full accuracy to 80% R.H. at 40°C IEC 60664-1 pollution degree 1

Storage environment -40°C to 70°C

[1]

Mainframe dimensions 133 H x 426 W x 341 D mm (5.25” x 16.8” x 14”)

Full rack, 3 units high

Mainframe weight: 8.8 kg (19.6 lbs)

Module dimensions 280 x 170 x 27 mm (11” x 6.7” x 1”)

Safety conforms to CSA, UL/IEC/EN 61010-1

EMC conforms to IEC/EN 61326-1, CISPR 11

Warranty 1 year

Software

Agilent connectivity software included

Agilent IO Libraries Suite 14 or greater (E2094N)

Minimum system requirements (IO libraries and drivers)

PC hardware Intel Pentium 100 MHz, 64 Mbyte RAM,

210 Mbyte disk space Display 800 x 600, 256 colors, CD-Rom drive

Operating system

[2]

Windows®98 SE/NT/2000/XP

Computer interfaces Standard LAN 10BaseT/100BaseTx

Standard USB 2.0 IEEE 488.2 GPIB

Software driver support for programming languages

Software drivers: IVI-C and IVI COM for Windows NT/2000/XP

LabVIEW

Compatible with programming tools and environments:

Agilent VEE Pro, Agilent T&M Toolkit

(requires Visual Studio.NET)

National Instruments Test Stand,

Measurement Studio, LabWindows/CVI, LabVIEW, Switch Executive

Microsoft Visual Studio.NET, C/C++,

Visual Basic 6

[1] Storage at temperatures above 40°C will decrease battery life

[2] Load IO Libraries Version M for Windows NT support or version

14.0 for window 98 SE support,

Ordering instructions

34980A Multifunction switch/measure mainframe Comes standard with “DMM” option

Description Module Optional terminal blocks, cables,

connectors connector kits

34921A 40-channel armature multiplexer w/low thermal offset 2 – 50-pin Dsub, Male 3492xT Terminal block with screw connectors

(order 34921T for temp reference)

34923A 40/80-channel reed multiplexer Y1135A – 1.5 m 50-pin M/F Dsub cable

34925A 40/80-channel optically isolated FET multiplexer Y1136A – 3 m 50-pin M/F Dsub cable

Y1139A – 50-pin female solder cup connector kit

34922A 70-channel armature multiplexer 2 – 78-pin Dsub, Male 3492xT Terminal block with solder connections

34924A 70-channel reed multiplexer Y1137A – 1.5 m 78-pin M/F Dsub cable

Y1138A – 3 m 78-pin M/F Dsub cable

Y1140A – 78-pin female solder cup connector kit

34931A Dual 4x8 armature matrix 2 – 50-pin Dsub, Male 3493xT Terminal block with screw connectors

34932A Dual 4x16 armature matrix Y1135A – 1.5 m 50-pin M/F Dsub cable

34933A Dual/quad 4x8 reed matrix Y1136A – 3 m 50-pin M/F Dsub cable

Y1139A – 50-pin female solder cup connector kit

34937A 32-channel Form C/Form A general-purpose switch 2 – 50-pin Dsub, Male 3493xT Terminal block with screw connectors

34938A 20-channel 5-amp Form A switch Y1135A – 1.5 m 50-pin M/F Dsub cable

Y1136A – 3 m 50-pin M/F Dsub cable

Y1139A – 50-pin female solder cup connector kit

34941A Quad 1x4 50-ohm 3-GHz RF multiplexer 10 – SMA Requires standard 50 ohm SMA RF cables, adapters

34942A Quad 1x4 75-ohm 1.5 GHz RF multiplexer 10 – Mini SMB Requires mini 75 ohm SMB RF cables, adapters

34945A Microwave switch/attenuator driver N/A Requires 34945EXT and optional Y1150A-Y1155A

distribution boards

34946A Dual 1x2 SPDT terminated microwave switch SMA Requires standard 50 ohm SMA cables and adapters

Option 004: 4 GHZ switches installed Option 020: 20 GHz switches installed

34947A Triple 1x2 SPDT unterminated microwave switch SMA Requires standard 50 ohm SMA cables and adapters

Option 004: 4 GHZ switches installed Option 020: 20 GHz switches installed

34950A 64-bit digital I/O with memory and counter 2 – 78-pin Dsub, Female 3495xT Terminal block with screw connectors

Y1137A – 1.5 m 78-pin M/F Dsub cable

Y1138A – 3 m 78-pin M/F Dsub cable

Y1142A – 78-pin male solder cup connector kit

34951A 4-channel isolated D/A converter with waveform 1 – 50-pin Dsub, Female 3495xT Terminal block with screw connectors

memory (DMM option required for calibration)

Y1135A – 1.5 m 50-pin M/F Dsub cable

Y1136A – 3 m 50-pin M/F Dsub cable

Y1141A – 50-pin male solder cup connector kit

34952A Multifunction module with 32-bit DIO, 2-ch D/A

and totalizer

34959A Breadboard module 26- & 40-pin internal Any terminal block can be used assuming

ribbon cable connectors 50- or 78-pin Dsub is used

System measurement & control modules

RF and microwave modules

General purpose/actuator modules

Matrix modules

Multiplexer modules

Mainframe – holds up to 8 plug-in modules

Accessories

Y1130A Rackmount kit for 34980A, forward or reverse mount

(must order either E3663AC rail kit for forward rack mounting or E3664AC rail kit for reverse rack mounting)

Y1131A Verification and diagnostic tools for 34980A mainframe and modules

(select option for specific module support)

Y1132A Module extender for 34980A

Terminal blocks used for discrete wiring. Fully loaded terminal blocks supports up to 20 AWG wire

3492xT Multiplexer terminal blocks

3493xT Matrix and GP terminal blocks

3495xT Measurement and control terminal blocks

Cables

[1]

used for direct cable connection to module. some modules require 2 cables

Y1135A 1.5 m 50-pin Dsub, M/F twisted pair with outer shield cable – 300 V

Y1136A 3 m 50-pin Dsub, M/F twisted pair with outer shield cable – 300 V

Y1137A 1.5 m 78-pin Dsub, M/F twisted pair with outer shield cable – 300 V

Y1138A 3 m 78-pin Dsub, M/F twisted pair with outer shield cable – 300 V

Connector kits

[1]

used to build custom cables

Y1139A Solder cup connector kit for 34921/23/25/31/32/33/37/38 –50-pin Dsub

female – 125 V

Y1140A Solder cup connector kit for 34922, 34924 – 78-pin Dsub female – 60 V

Y1141A Solder cup connector kit for 34951, 34952 – 50-pin Dsub male – 125 V

Y1142A Solder cup connector kit for the 34950A – 78-pin Dsub male – 60 V

34945A accessories – distribution boards required for control of external switch

34945EXT External driver for 34945A, one required for each 64 coils –

holds 4 distribution boards

Y1150A 34945EXT distribution board for 8 N181x SPDT switches

Y1151A 34945EXT distribution board for two 87104x/106x multiport or 87406B matrix

switches

Y1152A 34945EXT distribution board for one 87204x/206x or 87606B switch and

two N181x switches

Y1153A 34945EXT distribution board for two 84904/5/6/7/8 or 8494/5/6 step attenuators

Y1154A 34945EXT distribution board for two 87222 transfer switches and six N181x SPDT

switches

Y1155A 34945A distribution board w/ generic screw terminals for driving 16 switch coils

Thermocouples/thermistors

34307A 10 pack of J type thermocouples

34308A 5 pack of 10 k thermistors

For additional information please visit: http://www.agilent.com/find/34980a

[1] Module specifications include terminal block. Performance may be degraded

when using cables or connector kits.

Related Agilent literature

Publication title Publication type Publication number

Agilent VEE Pro Data sheet 5988-6302EN

Agilent W1140A-TKT Data sheet 5989-1441EN T&M Toolkit 2.0 with Test Automation

Agilent E2094N IO Libraries Suite 14 Data sheet 5989-1439EN

Agilent 34980A Configuring an Application Note 5989-2272EN RF/Microwave Switch System

Terminal block

Connector kit

Cable

Rack kit

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Contacts revised: 09/26/05

Product specifications and descriptions in this document subject to change without notice.

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Agilent 34980A Data Sheet

Specifications and Main Features

Frequently Asked Questions

User Manual