Quantum Composers LDDC 1550 - Manual (Page 15)

7-15 | P a g e
7 LSC 1650 Connections
The LSC 1650 has additional connections for the q-switch trigger and sync outputs, the external
trigger input, and extra I/O signals. The signal pin outs are as follows:
Q-Switch Trigger Output (SMA Connector)
Number
Name Type Description Range
1 Trigger Output Output Q-Switch trigger output 0V = Off
5V = On
2 GND Ground Signal Ground 0V
Sync Output (SMA Connector)
Number Name Type Description Range
1 Sync Output Output Sync output 0V = Off
5V = On
2 GND Ground Signal Ground 0V
External Trigger Input (SMA Connector)
Number Name Type Description Range
1 Trigger
Input
Output External trigger input 0-20V (0.5V trigger
threshold)
2 GND Ground Signal Ground 0V
Additional I/O (IDC 20 Pin)
Number Name Type Description Range
1 Aux 5VDC Power
Out Auxiliary +5VDC output +5V @50ma MAX
2 GND Ground Power Ground 0V
3 Q-SW Trig Output Q-Switch trigger output 4.2-5VDC @ 25ma
4 GND Ground Signal Ground 0V
5 Sync Out Output Sync signal output 4.2-5VDC @ 25ma