CRESTRON
Operations Guide - DOC. 8125
CNX Analog/Digital Input/Output Expansion Card: CNXIO-16
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CNX Analog/Digital Input/Output
Expansion Card: CNXIO-16
Description
Functional Description
The CNXIO-16 Analog/Digital Input/Output Expansion Card provides 16 analog
inputs or digital input/output connections. All pins pull up to +5V. The digital
output is rated for 250 mA sync from maximum 24 VDC with catch diodes for use
with ‘real world’ loads. The digital input is rated for 0 to 24 VDC. There is a 20K
Ohm input impedance; programmable 2K Ohm pullup resistor (per pin, software
reference to ground or closure to ground). To enable a 0K pull-up resistor, assign a
logic “1” to the corresponding “pu#” pin in the software. The input logic threshold
is 1.25 VDC. Analog input is rated for 0 to 10 VDC, protected to 24 VDC,
maximum.
Physical Description
The CNXIO-16, shown below, is a circuit board fastened to an aluminum faceplate.
The card is manufactured to easily fit into an unoccupied slot in a Crestron CNX
Generation Control System.
CNXIO-16 Faceplate
5.000 in
(127.00 mm)
0.980 in
(24.89 mm)
The faceplate contains two identical male, 9-pin connectors. There are eight
analog/digital input/output pins and one common ground pin per connector. Silk
screening is applied to the faceplate; pins are labeled A1 through A8 and B1
through B8. Common ground pins are labeled with a C. Two supplied 9-position
connectors can be wired and attached to connectors A and/or B.
