TR-HT2xx LED Controller - User Manual
Mode
P Flag
Output
Pulsed
P Flag = 1
Pulse is triggered on rising edge.
P Flag = 0
Pulse is triggered on falling edge.
Note:
The P Flag inverts the sense of the trigger.
7.2.1
Trigger input options
You can connect the following types of trigger to the input:
3V to 24V voltage source
Any voltage between 0V and 0.9V
is taken as logic 0.
Any voltage between 3V and 24V
is taken as logic 1.
TTL signal
You can connect a TTL signal to
the TR-HT’s input. However, a
3.3V TTL signal only works if it can
drive 8kohm without dropping
below 2.7V.
If the P flag is set to ‘1’, the TR-HT
output turns on when the TTL
driver goes HIGH. To reverse this,
set the P flag to ‘0’ (see
).
PNP signal
You can connect a PNP open
collector drive to the TR-HT’s
input. Use the connections shown
opposite. The PNP transistor
should not pull up to more than
24V.
If the P flag is set to ‘1’ the TR-HT
output turns on when the driving
transistor turns on. To reverse
this, set the P flag to ‘0’ (see
).
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