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LTDVE4CH-20 | INSTRUCTIONS MANUAL
12.5. Output multiplexers
The output multiplexers are used to send the inner signals to the output stages. There are eight
output multiplexers organized in a 12x8 routing matrix.
Each multiplexer can have its output selected from one of the following sources:
•
No selection
•
Pulse generator 1 output
•
Pulse generator 2 output
•
Pulse generator 3 output
•
Pulse generator 4 output
•
Pulse generator 5 output
•
Pulse generator 6 output
•
Pulse generator 7 output
•
Pulse generator 8 output
•
Filtered synchronization input 1 (TR1)
•
Filtered synchronization input 2 (TR2)
•
Filtered synchronization input 3 (TR3)
•
Filtered synchronization input 4 (TR4)
•
Continuous
As visible in the internal logic network diagram (see
Figure 4: diagram of internal logic network
), the
eight pulse generators can be entirely bypassed by selecting one of the four
filtered synchronization
inputs (TR1, TR2, TR3 or TR4). Moreover, the outputs can operate continuously by selecting the last
option.
Setting of the output multiplexers can be done using the serial RS485 or Ethernet interfaces.
12.6. Output protection
The output protection logic is used to prevent the light from getting overheated and thus damaged.
Inside each of the four protection blocks there is an independent state machine comprising a couple
of timers. The first timer is used to constrain the turn-on time of the light (Ton) to be lesser than or
equal to a programmable value
TonMAX
. The second timer is used to constrain the turn-off time of
the light (Toff) to be greater than or equal to a programmable value
ToffMIN
.
The diagram in
Figure 7: turn-on and turn-off times within limits
shows what happens when both time
constraints are satisfied. As visible in the diagram, the output follows the input.
