PR-655/670 User Manual
8
2.
E
XTERNAL
T
RIGGER
C
ONNECTOR
The PR-655/670 is equipped with a 6 pin mini-din connector that can be utilized for externally triggering a
measurement, and subsequently sending a signal (simple DC signal or pulse) to a source capable of being
externally triggered - such as a xenon strobe lamp.
FIGURE 9 - EXTERNAL TRIGGER PIN-OUT
The pin designations for the connector are:
PIN #
NAME
FUNCTION
1
VDD
5V @ 25mA Max.
2
GND
Ground
3
IN
Trigger Input
–
Contact Closure,
4
SPARE
N/C
5
OUT +
Trigger Output high side
6
OUT -
Trigger Output low side
TABLE 4 - PR-655/670 EXTERNAL TRIGGER PIN OUT
The following examples show sample driving circuits for the external trigger input and output.
