Measurement Specialties PCI-DAS1002 manual Configuring the hardware, Differential input mode

PCI-DAS1002 User's Manual Installing the PCI-DAS1002

Configuring the hardware

All hardware configuration options on the PCI-DAS1002 are software controlled. You can select some of the configuration options using InstaCal, such as the analog input configuration (16 single-ended or eight differential channels), and the source for the two independent counters. Once selected, any program that uses the Universal Library will initialize the hardware according to these selections.

For general information regarding analog signal connection and configuration, refer to the Guide to Signal Connections (available on our web site at www.mccdaq.com/signals/signals.pdf).

Differential input mode

When all channels are configured for differential input mode, eight analog input channels are available. In this mode, the input signal is measured with respect to the low input. The input signal is delivered through three wires:

ƒThe wire carrying the signal to be measured connects to CH# IN HI.

ƒThe wire carrying the reference signal connects to CH# IN LO.

ƒThe third wire, typically a system ground, connects to LLGND.

Single-ended input mode

When all channels are configured for single-ended input mode, 16 analog input channels are available. In this mode, the input signal is referenced to the board's signal ground (LLGND). The input signal is delivered through two wires:

ƒThe wire carrying the signal to be measured connects to CH# IN HI.

ƒThe second wire connects to LLGND.

Connecting the board for I/O operations

Connectors, cables – main I/O connector

The table below lists the board connectors, applicable cables, and compatible accessory boards for the PCI- DAS1002.

	Board Connectors, cables, accessory equipment
Connector type		100 pin high density Robinson Nugent connector
Compatible cables		C100FF-x, unshielded ribbon cable. x = length in feet (Figure 2 on on page 15)
Compatible accessory products		ISO-RACK16/P
(with the C100FF-x cable)		ISO-DA02/P
		CIO-ERB08 (DADP-5037 adaptor required *)
		CIO-ERB24 (DADP-5037 adaptor required *)
		SSR-RACK08 (DADP-5037 adaptor required *)
		SSR-RACK24 (DADP-5037 adaptor required *)
		BNC-16SE
		BNC-16DI
		CIO-MINI50 (2 required)
		CIO-TERM100 (1 required)
		SCB-50 (1 required)

* Details on the DADP-5037 adaptor board are available on our web site at www.mccdaq.com/cbicatalog/cbiproduct.asp?dept_id=103&pf_id=1381.

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