Measurement-computing ADAC/5500 Series Manual de usuario Pagina 51

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6.2.4 Digital Inputs / Outputs – ADAC/5501MF and ADAC/5502MF
Number: 16 accessible from main I/O connector,
32 accessible from two auxiliary I/O connectors
6.2.4.1 Main I/O Connector – ADAC/5501MF and ADAC/5502MF
Number: 16 accessible from main I/O connector
I/O Direction Select: Software selectable in groups of eight
Register: Two 8 bit registers configurable as either inputs or outputs.
Inputs are unlatched read-only.
Data Coding: Positive logic
Input Level: 5.0V/3.3 V CMOS/LSTTL compatible with 4.7 K ohm
pull-up resistor
High Level Input Voltage: 2 V min.
Low Level Input Voltage: 0.8 V max.
High Level Output Voltage: 2.4 V
Low Level Output Voltage: 0.4 V
Maximum Output Current: Low: 24 mA (sinking)
High: 24 mA (sourcing)
6.2.4.2 Auxiliary Digital I/O Connectors – ADAC/5501MF and ADAC/5502MF
Number: 32 accessible from 2 Auxiliary Digital I/O connectors
I/O Direction Select: Software selectable in groups of sixteen.
Register: Two 16 bit registers configurable as either inputs or
outputs. Inputs are unlatched read-only.
Data Coding: Positive logic
Input Level: 5.0V/3.3V CMOS/LSTTL compatible with 4.7 K ohm
pull-up resistor
High Level Input Voltage: 2 V min.
Low Level Input Voltage: 0.8 V max.
High Level Output Voltage: 2.4 V
Low Level Output Voltage: 0.4 V
Maximum Output Current: Low: 24 mA (sinking)
High:24 mA (sourcing)
ADAC Series 908196 -46- ADAC/5500 Series User’s Manual
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