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PCI-DAS6402/16 User's Guide
Information on signal connections
General information regarding signal connection and configuration is available in the Guide to Signal
Connections. This document is available on our web site at www.mccdaq.com/signals/signals.pdf).
Differential input mode
When all channels are configured for differential input mode, 32 analog input channels are available. In this
mode, the input signal is measured with respect to the low input. The input signal is typically delivered through
three wires:
!
The wire carrying the signal to be measured connects to CH# HI.
!
The wire carrying the reference signal connects to CH# LO.
!
The third wire, typically a system ground, is connected to LLGND.
Differential input mode is the preferred configuration for applications in noisy environments or when the signal
source is referenced to a potential other than PC ground.
Single-ended input mode
When all channels are configured for single-ended input mode, 64 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:
!
The wire carrying the signal to be measured connects to CH# IN HI.
!
The second wire is connected to LLGND.
Connecting the board for I/O operations
The PCI-DAS6402/16 uses a 100-pin I/O connector (refer to
The 100-pin connector provides a much greater signal density than the traditional 37-pin connector. Make
accurate notes and pay careful attention to wire connections. In a large system, a misplaced wire can create
hours of unnecessary troubleshooting.
Connectors, cables – main I/O connector
Table 2-1
lists the board connectors, applicable cables, and compatible accessory products for the PCI-
DAS6402/16.
Table 2-1. Board connectors, cables, and compatible hardware
Connector type
Compatible cable with the main connector
Compatible cables with the 40-pin auxiliary
connector
Compatible accessory products
with the C100FF-x
Compatible accessory products
with the C40FF-x
Compatible accessory products
with the C40-37F-x cable
or
with the BP40-37-x and the C37FF-x or
C37FFS-x cable
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Table 2-2
! Main connector: 100-pin high-density Robinson-Nugent
! Auxiliary digital connector: 40-pin header connector
C100FF-x ribbon cable. x = length in feet
C40FF-x cable (x = length in feet)
C40-37F-x cable (x = length in feet)
BP40-37 (Translates to a standard CIO-DIO24 type)
! BNC-16SE
! BNC-16DI
! CIO-MINI50
! CIO-TERM100
! SCB-50
CIO-MINI40
! CIO-MINI37
! SCB-37
! CIO-ERB24
! CIO-ERB08
! SSR-RACK24
! SSR-RACK08
2-3
Installing the PCI-DAS6402/16
on page 2-4 and T
able 2-3
on page 2-5).
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