BSS Audio DPR 522, User Manual

Page: 21 / 36

21
Pin 1 GATE OPEN Output
An open collector output that goes LOW when the DPR-522 is passing signals.
If an external pullup is used, limit the current passed by this pin to below
50mA at a voltage no higher than 25V. If desired this pin can be connected to
an internal pullup on pin 4 to provide a signal that swings positive to +15V
when the DPR-522 is not passing signals.
Pin 5 EXTERNAL TRIGGER Input (High to trigger)
Taking this pin to within 0.5V of ground with either a switch or logic level
will cause the DPR-522 to open. This pin should never be made higher than
25V. If it is desired to use a normally open switch to trigger the DPR-522,
connect this switch between this pin and ground. The DPR-522 will still
respond to internal triggers. If this is not required, rotate the THRESHOLD
control fully clockwise to the OUT position.
Pin 6 DISABLE LOW Input
If it is desired to use a normally open switch to DISABLE the DPR-522,
connect this switch between this pin and ground. Please note that this input
cannot be used when the DISABLE HIGH input is in use.
Pin 3 DISABLE HIGH Input (Switch closed to inhibit)
A voltage between 1V and 25V on this pin will stop the DPR-522 from
opening. If it is desired to use a normally open switch to ENABLE the DPR-
522, connect this pin to pin 7, and the switch between pin 3 and ground.
Please note that this input cannot be used when the DISABLE LOW input is in
use.