Keithley 7708 Multiplexer Module, 40-Channel Differential with Automatic CJC

Keithley

Keithley 7708 Multiplexer Module, 40-Channel Differential with Automatic CJC

SKU: IMM_38779938Brand: Keithley
$700.00 USD

Card or bank transfer · proforma invoice on request

We ship worldwideTraceable calibration documents

Key specs from the product description

Channels
40 (2-pole) or 20 (4-pole)
Configuration
1x40 or two 1x20 multiplexers
Maximum signal level
300 V DC or rms, 1 A switched, 60 W, 125 VA
Contact life
Over 100,000 operations at maximum signal
Contact potential
Under ±500 nV typical per contact
Offset current
Under 100 pA
All 13 specifications ↓
Keithley 7708 Multiplexer Module, 40-Channel Differential with Automatic CJC Overview The 7708 can be configured as two independent banks of multiplexers, and the built-in CJC sensors automatically linearize...

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Keithley 7708 Multiplexer Module, 40-Channel Differential with Automatic CJC

Overview

The 7708 can be configured as two independent banks of multiplexers, and the built-in CJC sensors automatically linearize thermocouples, making the module well suited to RTD, thermistor and thermocouple temperature applications as well as mixed-signal monitoring such as environmental stress screening.

Oversize screw terminal connection blocks are standard, relay closures are stored in onboard memory, and each channel accepts up to 300 V DC or rms at 1 A switched (60 W, 125 VA maximum). Channels 21-40 are recommended for 4-wire sense connections.

Features

  • 40 differential channels, configurable 2- or 4-pole
  • Two independent 1x20 multiplexer banks
  • Built-in automatic CJC for thermocouples
  • 300 V, 1 A channel capacity (60 W, 125 VA)
  • Contact potential below ±500 nV typical
  • Latching electromechanical relays, under 3 ms actuation
  • Oversize screw terminals, #20 AWG wire
  • Relay closures stored in onboard memory

Applications

  • Temperature scanning with RTDs, thermistors and thermocouples
  • Multi-point monitoring and environmental stress screening
  • General-purpose data acquisition on Integra mainframes

Keithley 7708 Multiplexer Module, 40-Channel Differential with Automatic CJC Technical Specifications

Channels 40 (2-pole) or 20 (4-pole)
Configuration 1x40 or two 1x20 multiplexers
Maximum signal level 300 V DC or rms, 1 A switched, 60 W, 125 VA
Contact life Over 100,000 operations at maximum signal
Contact potential Under ±500 nV typical per contact
Offset current Under 100 pA
Connector Screw terminal, #20 AWG
Relay type Latching electromechanical
Actuation time Under 3 ms
Isolation to earth Over 1 GΩ, under 400 pF
Cross talk (1 MHz) Under -40 dB
Operating environment 0 to 50°C, 80% RH at 35°C
Weight 0.52 kg

Manufacturer information: 7708 datasheet on tek.com.

Price $700.00 USD as listed on 05 Nov 2026. Request a firm quote: https://na.indomultimeter.net/products/keithley-7708-multiplexer-module-40-channel-differential-with-automatic-cjc

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