Agilent 34932A 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 your system switching needs up to 20 GHz and provides basic measurements and system control. It offers optional DMM measurements, counter/totalizer functionality, digital I/O with pattern capabilities, and analog outputs 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— no external signal conditioning is 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 also 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
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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
• Standard IVI and LabVIEW software drivers
• 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
14.0. 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
1
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.
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4
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 patternssend 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 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. You can 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
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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
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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/ ± 300V 1A 45 MHz 100 < 3 uV Temperature reference
low thermal offset 4 current channels
Config as 2- or 4-wire
34922A 70-channel armature multiplexer ± 300V 1A 25 MHz 100 < 3 uV Config as 2- or 4-wire
34923A 40/80-channel reed multiplexer ± 150V 0.5A 45 MHz 500 < 50 uV Config as 1-, 2- or 4-wire
34924A 70-channel reed multiplexer ± 150V 0.5A 25 MHz 500 < 50 uV Config as 2- or 4-wire
34925A 40/80-channel optically isolated ± 80V 0.05A 1 MHz 1000 < 3 uV Config as 1-, 2- or 4-wire
FET multiplexer
Matrix modules
34931A Dual 4x8 armature matrix ± 300V 1A 30 MHz 100 < 3 uV Backplane expandable
34932A Dual 4x16 armature matrix ± 300V 1A 30 MHz 100 < 3 uV Backplane expandable
34933A Dual/Quad 4x8 reed matrix ± 150V 0.5A 30 MHz 500 < 50 uV Backplane expandable
Config as 1- or 2-wire
General-purpose modules
34937A 28-channel Form C and 300V 1A 10 MHz N/A < 3 uV
4-channel Form A 250VAC 5A < 3 uV
34938A 20-channel 5-amp Form A 250VAC 5A 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 0.6dB > 58dB 3 GHz < 1.25 50 @ 1 GHz
34942A Quad 1x4 75 ohm 1.5 GHz RF multiplexer 0.6dB > 60dB 1.5 GHz < 1.35 75 @ 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 < 0.42dB > 85dB 4 GHz or < 1.15 50 @ 4 GHz
switch < 0.69dB > 67dB 20 GHz < 1.30 @ 20 GHz
34947A Triple 1x2 SPDT unterminated < 0.42dB > 85dB 4 GHz or < 1.15 50 @ 4 GHz
microwave switch < 0.69dB > 67dB 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 20MHz.
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.
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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 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 Yes No Yes Yes 2-wire Yes Yes 2-wire Yes
mode only mode only
34924A Reed Multiplexer Yes No Yes Yes Yes Yes Yes Yes Yes
34925A Reed Multiplexer Yes No Yes Yes 2-wire Yes No 2-wire No
mode only mode only
Note: See User’s Guide for additional information.
Table 2. Multiplexer measurement functions
041
042
043
044
911
LH
931
Current
LH
ABus1
021
022
023
024
025
DMM (MEAS)
LH
921
H
L
I
L
Fuse
I
L
Fuse
I
L
Fuse
I
L
Fuse
I
L
912
ABus2 DMM (SENS)
922
026
027
028
029
030
913
LH
ABus3
LH
923
031
032
033
034
H
L
035
H
914
LH
LH
036
037
038
039
L
040
924
ABus4
H
LH
LH
L
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.
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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*
LD
HD* LD
ABus2 DMM (SENS)
HD*
011
012
013
014
015
913
HD* LD
HD* LD
LD
HD* LD
ABus3 ABus4
016
017
018
019
020
HD* LD
914
HD* LD
HD* LD
COM 1
HD* LD
100Ω∆5 100Ω∆5
100Ω∆5
100Ω∆5
Analog buses
001
002
003
004
005
100Ω∆5
911
HD* LD
HD* LD
HD*
HD* LD
100Ω∆5
ABus1 DMM (MEAS)
006
LD
007
008
009
000
912
HD* LD
HD* LD
HD*
LD
L3H3+
COM 2
100Ω3
Current limiting circuitry
51.135
1135 1135
Analog buses
041
042
043
044
045
046
047
048
049
050
911
921
ABus1 DMM (MEAS)
051
052
053
054
055
056
057
058
059
060
912
922
Bank 2
ABus2 DMM (SENS)
061
062
063
064
065
066
067
068
069
070
913
ABus3 ABus4
L3H3+L3H3+L3H3+
923
071
072
073
074
075
076
077
078
079
080
914
L3H3+L3H3+L3H3+L3H3+
L3H3+
924
H3+H3+H3+H3+
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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
Switch type Armature Armature Reed Reed Optically isolated FET
latching latching
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 0.5 A 0.02 A
[8]
Carry current 2 A 2 A 1.5 A 1.5 A
Power (W, VA)
[6]
60 W 60 W 10 W 10 W 1.6 W
Volt-Hertz limit 10
8
10
8
10
8
10
8
10
7
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 < 1.5 < 1.5
[5]
< 1.5
[5]
< 700
DC Isolation (ch-ch, ch-earth) >10G >10G >10G >10G >10G
Leakage current
[3]
N/A N/A N/A N/A 20nA
[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 25 MHz 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 100pF LO – earth 150 pF 200 pF 120 pF 170 pF 300pF (600pF 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 in-rush resistors bypassed
[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.
* See User’s Guide for additional specifications
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.
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Figure 5. 34932A dual 4x16 armature matrix
H L
H L
L
LHLHLHLH
H L
H L
H
L
H
L
H L
H L
H L
H L
LHLHLHLHLH
H L
921
H L
922
H L
923
H L
924
ABus1 DMM (MEAS)
ABus2 DMM (SENS
ABus3
ABus4
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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 Carry current 2 A 2 A 1.5 A
Power (W, VA)
[2]
60 W 60 W 10 W
[7]
Volt-Hertz limit 10
8
10
8
10
8
General Specifications
Offset voltage
[3]
< 3 uV < 3 uV < 50 uV
< 100 uV 1-wire
Initial closed channel res
[3]
< 1.5 < 1.5 < 1.5
[5]
DC Isolation (ch-ch, ch-earth) > 10G > 10G > 10G
AC characteristics
Bandwidth at terminal block
[4]
30 MHz 30 MHz 30 MHz
[5]
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 source, 50 load, differential measurements verified (Sdd21)
[5] With in-rush resistors bypassed
[6] Limited to 6 W channel resistance power loss per module
[7] Power restrictions allow only 20 channels to be closed at one time
* See User’s Guide for additional specifications
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 5A 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.
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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
8
10
8
General specifications
Offset voltage 3 uV 3 uV
Initial closed channel res Form C – 125 m
Form A – 50 m < 60 m
DC Isolation (ch-ch, ch-earth) > 10G > 10G
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)
* See User’s Guide for additional specifications
Figure 6. 34937A 32-channel Form A/ Form C switch
NC
NO
COM
NC
NO
COM
NO
COM
NO
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.
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Figure 7. 34941A Quad 1x4 50 ohm 3 GHz multiplexer
34941A Typical crosstalk
z
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
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
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.
14
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
50
201 202COM
15
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 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 1.5GHz DC to 4 GHz DC to 4 GHz
OR OR DC to 20GHz DC to 20 GHz
Insertion loss
[2]
DC to 4 GHz < 0.42dB DC to 4 GHz < 0.42 dB
(< 40 C/ 80% RH) @ 20 GHz < 0.69dB @ 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 > 85dB DC to 4 GHz > 85 dB
at 20 GHz > 67dB 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 V DC 7 V DC
Max current 0.5A 0.5A N/A N/A
Max power (W) 10 W
[5]
10 W
[5]
1W @ 7 VDC, 50W peak
[4]
1W @ 7VDC, 50W peak
[4]
Offset voltage 10 uV 10 uV N/A N/A
Initial channel resistance 1 1 N/A N/A
Volt-Hertz limit 2 x 10
10
2 x 10
10
General characteristics
Relay life 300,000 at 30V/10mA load; 300,000 at 30V/10mA load > 5 M cycles, > 5 M cycles,
100,000 at 10W load RF SAmeas 100,000 at 10W load RF SAmeas 1M w/drive 28-32VDC 1M w/drive 28-32VDC
Open/close time 18 ms/18 ms 18 ms/18 ms < 15 ms/15 ms < 15 ms/15 ms
Connector type SMA Mini 75 SMB SMA SMA
Analog bus backplane No No No No connection
[1] Channel-to-earth
[2] 50 source, 50 load (75 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
* See User’s Guide for additional specifications
16
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
• Generic screw terminal connections
General specifications
34945EXT switch drive (64 channels, low side drive mode)
Driver off voltage (max) 30V
Driver off leakage current < 10 uA
Driver on current
(continuous; 6 chans) 300 mA (15 msec, 25% d.c.) 600 mA T
amb
40°C
400 mA T
amb
> 40°C
Driver on voltage (max) 1.2 V
34945EXT switch drive (64 channels, TTL drive mode)
Hi output voltage 3 V
Hi output current 2 mA
Lo output voltage 0.4 V
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 k
Maximum input voltage 30 V
34945EXT switch drive power supply (34945EXT powered by 34945A)
Voltage 24 V nominal
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 indicators
Channels 64
Supply voltage 5 V nominal
LED drive current 10 mA nominal
Compliance voltage 0.8 V
34945EXT dimensions
11.2” x 4.5” x 1.5” high with distribution boards installed
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 user supplied pull up resistors for up to 5 V outputs. 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. The 34950T terminal block has a pinout for connection to an external opto 22 boards.
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, asynchronous, and strobe
• Programmable polarity
• Source or sink up to 24 mA
• 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 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]
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
17
34980A system control modules
Figure 10. 34950A 64-channel digital I/O
Bank 1 Bank 2
INTR
8…%
8…%
8…%
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…%
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
32 Bits
Counter/
totalizer
1…8
Counter/
totalizer
2…8
IN
Gate
IN
Gate
Channel
301
Channel
302
24 Bits
Clock
out
20 MHz – 10 Hz
CLK
18
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 kload
Settling time: 40 uS (-full scale to +full
scale step, single channel, to rated accuracy)
Output impedance: < 1 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
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 k, DC coupled
Trigger output
Level: TTL compatible
into 1 k(3.3 V logic)
Output impedance: 50 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 typical
Maximum rate: 10 MHz
Accuracy: ± 100 ppm
Figure 11. 34951A 4-channel isolated D/A converter
16 Bits
16 Bits
16 Bits
16 Bits
DAC 1
DAC 2
DAC 3
DAC 4
Channel
01
Channel
02
Channel
03
Channel
04
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.
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
Vout(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
19
Figure 12. 34952A multifunction module
8« %
8« %
8« %
8« %
32 Bits
16 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.
20
Figure 13. 34959A breadboard module
Bus A
Bus B
Bus C
Bus D
Backplane
IO
Backplane
access relays
CPU
Relay
drivers
General purpose
in/out
50V
32
+12 V
+5 V
8
8
3
21
34980A system specifications and characteristics
(for complete specifications, see the 34980A Users Guide)
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 ± 1°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 3Hz-5Hz 1.00 + 0.03 1.00 + 0.04 1.00 + 0.04 0.100 + 0.004 voltage
[5]
to 100.0000 V 5Hz-10Hz 0.35 + 0.03 0.35 + 0.04 0.35 + 0.04 0.035 + 0.004
10Hz-20kHz 0.04 + 0.03 0.05 + 0.04 0.06 + 0.04 0.005 + 0.004
20kHz-50kHz 0.10 + 0.05 0.11 + 0.05 0.12 + 0.05 0.011 + 0.005 50kHz-100kHz 0.55 + 0.08 0.60 + 0.08 0.60 + 0.08 0.060 + 0.008 100kHz-300kHz
[6]
4.00 + 0.50 4.00 + 0.50 4.00 + 0.50 0.20 + 0.02
300.0000 V 3Hz-5Hz 1.00 + 0.05 1.00 + 0.08 1.00 + 0.08 0.100 + 0.008 5Hz-10Hz 0.35 + 0.05 0.35 + 0.08 0.35 + 0.08 0.035 + 0.008 10Hz-20kHz 0.04 + 0.05 0.05 + 0.08 0.06 + 0.08 0.005 + 0.008 20kHz-50kHz 0.10 + 0.10 0.11 + 0.12 0.12 + 0.12 0.011 + 0.012 50kHz-100kHz 0.55 + 0.20 0.60 + 0.20 0.60 + 0.20 0.060 + 0.020 100kHz-300kHz
[6]
4.00 + 1.25 4.00 + 1.25 4.00 + 1.25 0.20 + 0.05
Resistance
[7]
100.0000 1mA 0.0030 + 0.0035 0.008 + 0.004 0.010 + 0.004 0.0006 + 0.0005
1.000000 k 1mA 0.0020 + 0.0006 0.008 + 0.001 0.010 + 0.001 0.0006 + 0.0001
10.00000 k 100uA 0.0020 + 0.0005 0.008 + 0.001 0.010 + 0.001 0.0006 + 0.0001
100.0000 k 10uA 0.0020 + 0.0005 0.008 + 0.001 0.010 + 0.001 0.0006 + 0.0001
1.000000 M 5.0uA 0.002 + 0.001 0.008 + 0.001 0.010 + 0.001 0.0010 + 0.0002
10.00000 M 500nA 0.015 + 0.001 0.020 + 0.001 0.040 + 0.001 0.0030 + 0.0004
100.0000 M 500nA/10M 0.300 + 0.010 0.800 + 0.010 0.800 + 0.010 0.1500 + 0.0002
Frequency and 100mV to 300V 3Hz-5Hz 0.10 0.10 0.10 0.005 period
[8]
5Hz-10Hz 0.05 0.05 0.05 0.005 10Hz-40Hz 0.03 0.03 0.03 0.001 40Hz-300kHz 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 < 0.6V 0.010 + 0.004 0.030 + 0.005 0.050 + 0.005 0.002 + 0.0005
1.000000 A < 2V 0.050 + 0.006 0.080 + 0.010 0.100 + 0.010 0.005 + 0.0010
True RMS AC current 10.00000 mA 3Hz-5Hz 1.00 + 0.04 1.00 + 0.04 1.00 + 0.04 0.100 + 0.006 (34921A only) and
[5]
5Hz-10Hz 0.30 + 0.04 0.30 + 0.04 0.30 + 0.04 0.035 + 0.006
1.0 A 10Hz-5kHz 0.10 + 0.04 0.10 + 0.04 0.10 + 0.04 0.015 + 0.006
100.0000 mA
[9]
3Hz-5Hz 1.00 + 0.5 1.00 + 0.5 1.00 + 0.5 0.100 + 0.006 5Hz-10Hz 0.30 + 0.5 0.30 + 0.5 0.30 + 0.5 0.035 + 0.006 10Hz-5kHz 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.
* See User’s Guide for additional specifications
22
Temperature measurement accuracy ± (% of reading + % of range)
Temperature Type Best range
[1]
24 hour Extended range
[1]
1-year accuracy 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, includes E -150°C to 1000°C 1.0°C -200°C to -150°C 1.5°C 0.03°C cold junction accuracy J -150°C to 1200°C 1.0°C -210°C to -150°C 1.2°C 0.03°C on terminal block) K -100°C to 1200°C 1.0°C -200°C to -100°C 1.5°C 0.03°C
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 49 to -200°C to 600°C 0.06°C 0.003°C
2.1 K
Thermistor 2.2k, 5k, 10k -80°C to 150°C 0.08°C 0.002°C
[1] For total measurement accuracy, add temperature probe error
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 to
(includes switch, measure time and I/O time) Memory(GPIB)
Single channel
[1] [2]
GPIB USB 2.0 LAN (w/ VXI 11) Measurement into memory msec msec msec 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 scale 9.52 10.64 11.76 8.4 (eg MEAS DCV 10 / MEAS DCV 1)
Single channel while changing function 128 120 120 120 (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.
23
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
24
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 or > 10,000 M 100 V, 300 V ranges 10 M ±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
Input impedance 1 M ± 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 , 1k Ω,
10k ranges
Maximum lead resistance 10% of range per lead for 100
and 1k ranges. 1k 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
DC current
Shunt resistance 5 for 10 mA, 100 mA;
0.1 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 for 10 mA; 0.1 for 100 mA, 1 A
Input protection 1A 250 V fuse on 34921A module
Thermocouple
Conversion ITS-90 software compensation
Reference junction type Internal, fixed, or external
Open thermocouple check Selectable per channel. Open > 5k
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 CMRR 140 dB AC CMRR 70 dB
[1] For 1 K 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
[5] For fixed function and range, readings to memory, scaling and alarms
off, autozero off
[6] Maximum limit with default settling delays defeated
[7] Speeds are for 4 1⁄2 digits, delay Ø, display off, autozero off
[8] Isolation voltage (ch - ch, ch - earth) 300 VDC, AC rms
[9] 6 1⁄2 digits = 22 bits, 5 1⁄2 digits = 18 bits, 4 1⁄2 digits = 15 bits
[10] Assumes relative time format (time since start of scan)
25
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 133H x 426W x 341D 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 14.0 (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
26
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 – 50pin Dsub, Male 3492xT Terminal block with screw connectors
(order 34921T for temp reference)
34923A 40/80-channel reed multiplexer Y1135A – 1.5m 50pin M/F Dsub cable
34925A 40/80-channel optically isolated FET multiplexer Y1136A – 3m 50 pin M/F Dsub cable
Y1139A – 50 pin female solder cup connector kit
34922A 20-channel armature multiplexer 2 – 78pin Dsub, Male 3492xT Terminal block with solder connections
34924A 70-channel reed multiplexer Y1137A – 1.5m 78pin M/F Dsub cable
Y1138A – 3m 78 pin M/F Dsub cable
Y1140A – 78 pin female solder cup connector kit
34931A Dual 4x8 armature matrix 2 – 50pin Dsub, Male 3493xT Terminal block with screw connectors
34932A Dual 4x16 armature matrix Y1135A – 1.5m 50pin M/F Dsub cable
34933A Dual/quad 4x8 reed matrix Y1136A – 3m 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 – 50pin Dsub, Male 3493xT Terminal block with screw connectors
34938A 20-channel 5-amp Form A switch Y1135A – 1.5m 50pin M/F Dsub cable
Y1136A – 3m 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 – 78pin Dsub, Female 3495xT Terminal block with screw connectors
Y1137A – 1.5m 78pin M/F Dsub cable
Y1138A – 3m 78 pin M/F Dsub cable
Y1142A – 78 pin male solder cup connector kit
34951A 4-channel isolated D/A converter with waveform 1 – 50pin Dsub, Female 3495xT Terminal block with screw connectors
memory (DMM option required for calibration)
Y1135A – 1.5m 50pin M/F Dsub cable
Y1136A – 3m 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
27
Accessories
Y1130A Rackmount kit for 34980A, forward or reverse mount
(order E3663AC rail kit for forward rack mounting or E3664AC rail kit for reverse rack mounting)
Y1131A Verification and diagnostic tools for 34950A 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 1.5m 50pin Dsub, M/F twisted pair with outer shield cable – 300 V
Y1136A 3m 50pin Dsub, M/F twisted pair with outer shield cable – 300 V
Y1137A 1.5m 78pin Dsub, M/F twisted pair with outer shield cable – 300V
Y1138A 3m 78pin 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 – 125V
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 10k 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 7.0 Data sheet 5988-6302EN
Agilent W1140A-TK2 Data sheet 5989-1441EN T&M Toolkit 2.0 with Test Automation
Agilent E2094N IO Libraries Suite 14.0 Data sheet 5989-1439EN
Terminal block
Connector kit
Cable
Rack kit
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