GAI-Tronics 10959-201 and 10959-203 Wall-mount Audio Messenger Interface - Manual (Page 9)

Pub. 42004-403F
M ODEL 10959-201 AND -203 W ALL -M OUNT A UDIO M ESSENGER I NTERFACES P AGE 7 of 20
f:\standard ioms - current release\42004 instr. manuals\42004-403f.doc
11/13
Table 2. Digital Output Assignment
Termination
PCBA Label Internal Terminal
Pin-Out Function or ACT
Description
GND TB1-1 Ground or dc common
1 TB1-2 Output 1
2 TB1-3 Output 2
3 TB1-4 Output 3
4 TB1-5 Output 4
5 TB1-6 Output 5
6 TB1-7 Output 6
7 TB1-8 Output 7
8 TB1-9 Output 8
GND TB1-10 Ground or dc common
Digital Inputs
Terminal block TB2, labeled DIGITAL INPUTS is located on the termination PCBA. It provides eight
digital common ground inputs. The input contacts may be any combination of momentary (pulsed)
switches and maintained (latched) switches. They can be either normally open or closed dry contacts
rated at 5 mA or better. The ground or dc common terminals for the controlled circuits must be tied to
GND on the terminal block.
For the inputs to operate reliably, the cable loop resistance connecting the relay/switch contact closures
cannot exceed 200 ohms.
Table 3. Digital Input Assignment
Termination
PCBA Label Internal Terminal
Pin-Out
Function or ACT Description
GND TB2-1 Ground or dc common
1 TB2-2 Input 1
2 TB2-3 Input 2
3 TB2-4 Input 3
4 TB2-5 Input 4
5 TB2-6 Input 5
6 TB2-7 Input 6
7 TB2-8 Input 7
8 TB2-9 Input 8
GND TB2-10 Ground or dc common