Adlink PCI-9524 Manual do Utilizador Página 47

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Signal Connections 31
ADLINK Technology Inc. PCI-9524
Copyright 2008 User’s Manual
Table 3-1: I/O Signal Descriptions
Signal Name Reference Direction Description
AIn+ AIn- Input
Differential analog input channels.
Channels 0 to 3 are for load-cell
transducer inputs
(1) (2)
, and channels 4 to 7
are for general purpose analog inputs.
VEXn+ VEXn- Output
Analog outputs for transducer voltage
excitation, in selectable ranges of 2.5V or
10V.
Connect one excitation source to only one
load-cell transducer; sharing a common
wiring between transducers will degrade
gain accuracy.
Up to four 120-ohm load-cells can be
connected to one PCI-9524. Load-cells
with larger impedance can also be used.
VEX_SENn+ VEX_SENn+ Input
Remote-sense analog inputs for
transducer excitation sensing.
Always connect VEX_SENn+ to VEXn+,
VEX_SENn- to VEXn-, and as close as
possible to transducers excitation
terminals.
AGND -- -- Analog ground.
AOn AGND Output Single-ended analog output channel.
PULSEn_A+ PULSEn_A- Output
Pulse-command differential voltage
outputs.
As Clock signal in single phase mode.
As Clock signal in CLK/DIR mode.
As CW signal in CW/CCW mode.
PULSEn_B+ PULSEn_B- Output
Pulse-command differential voltage
outputs.
Unused in single phase mode.
As DIR signal in CLK/DIR mode.
As CWW signal in CW/CCW mode.
ENCn_A+ ENCn_A- Input Encoder phase A inputs.
ENCn_B+ ENCn_B- Input Encoder phase B inputs.
IDIn+ IDIn- Input
Isolated digital inputs.
Accepts bipolar input signal.
IDOn+ IDOn- Output
Isolated digital outputs. Using N-MOS as
current sinker.
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