Installation and Configuration
Npaq® Hardware Manual
2.7. Position Synchronized Output (PSO) Connector
The Npaq PSO output signal is available in three formats: differential line driver, open collector, and opto
isolated. The opto-isolated output is most commonly used and provides galvanic isolation between the Npaq
and user electronics. The differential line driver output provides the highest speed and best noise immunity
especially over large cable distances. Note that the line driver output requires an RS-422 compatible receiver
along with a 100 Ohm (typ) terminating resistor. The open collector output may be used to drive an opto-
coupler LED or connect directly with TTL level electronics. The line driver and open collector outputs are not
galvanically isolated from the Npaq. For programming information, refer to the A3200 Help file.
Table 2-21:
PSO Interface Connector Pinout (J7)
Pin #
Description
In/Out/Bi
Connector
1
Differential PSO Output 1 +
Output
2
Differential PSO Output 1 -
Output
3
Differential PSO Output 2 +
Output
4
Differential PSO Output 2 -
Output
5
Reserved
Input
6*
PSO Opto Output
Output
7*
PSO Opto Return
Input
8
PSO Open Collector Output
Output
9
Sync Output 1 (Reserved)
Output
10
Sync Output 2 (Reserved)
Output
11
Sync Output 3 (Reserved)
Output
12
Sync Output 4 (Reserved)
Output
13
Sync Output 5 (Reserved)
Output
14
Sync Output 6 (Reserved)
Output
15
Sync Input 1 (Reserved)
Input
16
Sync Input 2 (Reserved)
Input
17
Sync Input 3 (Reserved)
Input
18
Sync Input 4 (Reserved)
Input
19
Sync Input 5 (Reserved)
Input
20
Sync Input 6 (Reserved)
Input
21
PSO Opto-Isolated Int
Input
22
PSO Opto-Isolated Interlock -
Input
23
Reset (Active Low)
Output
24
Common
N/A
25
+ 5 V (500 mA max)
Output
Table 2-22:
Mating Connector Part Numbers for the PSO Connector
Mating Connector
Aerotech P/N
Third Party P/N
25-Pin D-Connector
ECK00101
FCI DB25P064TXLF
Backshell
ECK00656
Amphenol 17E-1726-2
www.aerotech.com
Chapter 2
59
