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The Keysight 34925T is a terminal block for the 34925A 40/80-channel FET multiplexer, used for discrete wiring. It supports up to 20 AWG wire size for up to 100 connections or 24 AWG for 100 connections or more. Two terminal block options facilitate wiring connections to the 34925A module:
The 34925T is a detachable terminal block that provides a flexible method for connecting external wiring.
| Specifications | |
| 34980A Data Acquisition System | |
| Model | Description |
| Mainframe – Holds up to 8 Plug-in Modules | |
| 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 |
| Specifications | |||||||
| 34980A Data Acquisition System | |||||||
| Module Overview | |||||||
| Module | Description | Max. Volts | Switch/Carry Current | BW (MHz) | Scan ch/sec | Thermal Offset | Comments |
| Multiplexer Modules | |||||||
| 34921A | 40-channel armature multiplexer w/low thermal offset | ± 300V | 1A/2A | 45 MHz | 100 | < 3 μV | Temperature reference 4 current channels. Config as 2- or 4-wire |
| 34922A | 70-channel armature multiplexer | ± 300V | 1A/2A | 25 MHz | 100 | < 3 μV | Config as 2- or 4-wire |
| 34923A | 40/80-channel reed multiplexer | ± 150V | 0.5A/1.5A | 45 MHz | 500 | < 50 μV | Config as 1-, 2- or 4- wire |
| 34924A | 70-channel reed multiplexer | ± 150V | 0.5A/1.5A | 25 MHz | 500 | < 50 μV | Config as 2- or 4-wire |
| 34925A | 40/80-channel optically isolated FET multiplexer | ± 80V | 0.02A | 1 MHz | 1000 | < 3 μV | Config as 1-, 2- or 4- wire |
| Matrix Modules | |||||||
| 34931A | Dual 4x8 armature matrix | ± 300V | 1A/2A | 30 MHz | 100 | < 3 μV | Backplane expandable |
| 34932A | Dual 4x16 armature matrix | ± 300V | 1A/2A | 30 MHz | 100 | < 3 μV | Backplane expandable |
| 34933A | Dual/Quad 4x8 reed matrix | ± 150V | 0.5A/1.5A | 30 MHz | 500 | < 50 μV | Backplane expandable Config as 1- or 2-wire |
| 34934A | Quad 4x32 reed matrix | ± 100V | 0.5A/0.5A | 20MHz | 500 | < 50 μV | Row expansion kit. Config as 1- or 2-wire |
| General Purpose Modules | |||||||
| 34937A | 28-channel Form C and 4-channel Form A | ±300V ±250VAC | 1A/2A/5A | 10 MHz | N/A | < 3 μV < 3 μV | -- |
| 34938A | 20-channel 5-amp Form A | ± 250VAC | 5A/8A | 1 MHz | N/A | < 3 μV | -- |
| 34939A | 64-channels Form A | ± 100V | 1A/2A | 10 MHz | N/A | < 3 μV | -- |
| Specifications | ||
| Data Acquisition System Modules Overview | ||
| Module Overview | ||
| Module | Description | Connectors |
| Multiplexer Modules | ||
| 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 | ||
| 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 | ||
| 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 | ||
| 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 | ||
| 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 |
| Specifications | |
| 34980A Data Acquisition System Module Overview | |
| Model | Description |
Terminal Blocks used for Discrete Wiring. Supports 20 AWG Wire for 100 Connections | |
| 3492xT | Multiplexer terminal blocks |
| 3493xT | Matrix and GP terminal blocks |
| 3495xT | Measurement and control terminal blocks |



