The Keysight 34939A is a high density general-purpose switch module for the 34980A Multifunction Switch/Measure Unit. It has 64 independent single-pole, single-throw (SPST) relays that can switch 1A and carry 2A. This module can be used to cycle power to products under test, control indicator and status lights, and to actuate external power relays and solenoids. The relays are 100V, 1A contacts and can handle up to 60W. Standard 78-pin Dsub connectors allow for use with standard cables, screw terminal blocks, or mass interconnect solutions.
| Key Features |
| 64 Form A channels up to 1A, 60W |
| Latching armature relays, with relay cycle counter |
| Temperature sensor for overheating conditions |
| Simultaneous channel switching |
| Optional high density screw terminal blocks |
| Specifications |
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| Data Acquisition System |
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| Model Overview |
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| Model | Description |
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| Mainframe - Holds up to 8 Plug in Modules |
| Comments |
| 34980A | Multifunction data acquisition mainframe | Comes standard with “DMM” option and BenchVue DAQ |
| BV0006B | BenchVue Data Acquisition Control and Analysis (DAQ) | BenchVue makes it simple to connect, control instruments, and automate test sequences.
Supported plug-in modules:
34921A,
34922A,
34923A,
34924A,
34925A,
34931A,
34932A,
34933A,
34937A,
34938A,
34952A.
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| Specifications |
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| Data Acquisition System Modules Overview |
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| Model Overview |
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| Module | Description | Connectors |
| Multiplexer Modules |
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| 34921A | 40-channel armature multiplexer w/low thermal offset (order 34921T for temp reference) | 2 – 50-pin Dsub, Male |
| 34923A | 40/80-channel reed multiplexer | 2 – 50-pin Dsub, Male |
| 34925A | 40/80-channel optically isolated FET multiplexer | 2 – 50-pin Dsub, Male |
| 34922A | 70-channel armature multiplexer | 2 – 78-pin Dsub, Male |
| 34924A | 70-channel reed multiplexer | 2 – 78-pin Dsub, Male |
| Matrix Modules |
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| 34931A | Dual 4x8 armature matrix | 2 – 50-pin Dsub, Male |
| 34932A | Dual 4x16 armature matrix | 2 – 50-pin Dsub, Male |
| 34933A | Dual/quad 4x8 reed matrix | 2 – 50-pin Dsub, Male |
| 34934A | Quad 4x32 reed matrix | 2 – 78-pin Dsub, Male |
| General Purpose/Actuator Models |
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| 34937A | 32-channel Form C/Form A general purpose switch | 2 – 50-pin Dsub, Male |
| 34938A | 20-channel 5-amp Form A switch | 2 – 50-pin Dsub, Male |
| 34939A | 64-channel Form A Switch | 2 – 78-pin Dsub, Male |
| RF and Microwave Modules |
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| 34941A | Quad 1x4 50-ohm 3-GHz RF multiplexer | 20 - SMA |
| 34942A | Quad 1x4 75-ohm 1.5 GHz RF multiplexer | 20 – mini SMB |
| 34945A | Microwave switch/attenuator driver | N/A |
| 34946A | Dual 1x2 SPDT terminated microwave switch
Option 001: No switches installed
Option 004: 4 GHZ switches installed
Option 020: 20 GHz switches installed
Option 026: 26.5 GHz switches installed
| 6 SMA |
| 34947A | Triple 1x2 SPDT Unterminated Microwave Switch Module | 9 SMA |
| System Measurement and Control Modules |
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| 34950A | 64-bit digital I/O with memory and counter | 2 – 78-pin Dsub, Female |
| 34951A | 4-channel isolated D/A converter with waveform memory
(DMM option required for calibration)
| 1 – 50-pin Dsub, Female |
| 34952A | Multifunction module with 32-bit DIO,
2-ch D/A and totalizer
| 1 – 50-pin Dsub, Female |
| 34959A | Breadboard module | 26- & 40-pin internal ribbon cable connectors |
