Keithley
Keithley 7708
Differential Multiplexer Module, 40 Ch., Thermocouple & General Purpose
40 two-wire or 20 four-wire channels Number of Channels
1×40 two-wire or 1×20 four-wire differential multiplexer Multiplexer Configuration
300 V AC/DC maximum Voltage Switching (AC/DC)
1 A maximum per channel Current Switching
1 Ω initial, typical Contact Resistance
| Attribute | Value |
|---|---|
| Number of Channels | 40 two-wire or 20 four-wire channels |
| Multiplexer Configuration | 1×40 two-wire or 1×20 four-wire differential multiplexer |
| Voltage Switching (AC/DC) | 300 V AC/DC maximum |
| Current Switching | 1 A maximum per channel |
| Contact Resistance | 1 Ω initial, typical |
| Insulation Resistance | >10^9 Ω at 500 VDC |
| Relay Type | Reed relays |
| Compatible Mainframe | Keithley 2750 Multimeter/Switch System |
| Module Slots Required | Single slot plug-in module |
| Operating Temperature Range | 0°C to 50°C (32°F to 122°F) |
Keithley 7708 Options:
- 7708 - 3Y-EW - 1-year factory warranty extended to 3 years from date of shipment
| Model | 7708 |
|---|
The Keithley 7708 is a plug-in multiplexer module offering 40 channels of 2-pole or 20 channels of 4-pole switching, configurable as two independent banks. It supports 300 V, 1 A for voltage channels, and features large screw terminals and built-in CJC sensors for linearizing thermocouple readings.
Ideal for RTD, thermistor, and thermocouple temperature applications, it supports mixed-signal multipoint monitoring like environmental stress screening.
Testwall can supply the used Keithley 7708, fully tested. With expert support and global delivery, Testwall ensures high-performance instrumentation with unmatched reliability and service quality. Please contact us directly if you need calibration or repair of the Keithley 7708.
