CR7 I/O Cards / CR725
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CR725 Excitation Card

Overview

The CR725 provides 8 switched analog excitations for resistance bridge measurements, 2 continuous analog outputs, and 8 digital control outputs. All continuous analog outputs and digital control ports can be active simultaneously; only one switched excitation output can be active at a time.

Each CR725 is placed in an open slot on the CR720 or CR720XL I/O module (the CR720 can accommodate up to 7 cards; the CR720XL can hold up to 14). More than one CR725 card can be used in one I/O module.

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Benefits and Features

  • Can be added to or removed from CR700X to support changing measurement needs

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Detailed Description

The CR725 is a I/O card for the CR7 Measurement and Control Datalogger. It has eight switched analog excitations for resistance bridge measurements, two continuous analog outputs, and eight digital control outputs. All continuous analog outputs and digital control ports can be active simultaneously; only one switched excitation output can be active at a time.

Each CR725 is placed in an open slot on the CR720 or CR720XL I/O module; the CR720 can accommodate up to 7 cards; the CR720XL can accommodate up to 14.

Specifications

-NOTE- Note: Additional specifications are listed in the CR7 Specifications Sheet.
Switched Excitation Channels 4 voltage
Switched Analog Excitations for Resistance Bridge Measurements 8
Digital Control Ports 8
Continuous Analog Outputs 2
Analog Output Range ±5 V
Digital Control Output Voltages (no load)
  • 5.0 V ±0.1 V (high)
  • < 0.1 V (low)
Digital Control Output Resistance 400 ohm

Compatibility

Each CR725 occupies one slot in a CR720 or CR720XL I/O Module.