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The USC card needs up to three power supplies which are provided via the Laser, I/O - 37 pin connector. The power supply of the USC-3 has the following electrical characteristics:
Power Supply |
Voltage [V] |
Maximum Current |
Default state |
---|---|---|---|
Ext_VCC: Main power [a] |
5.0 [b] |
1.6 A |
Not powered |
Opto_VCC: Opto-coupled outputs (Opto_Out) |
5.0 to 24.0 |
210 mA [c] |
Not powered |
Laser_VCC: Opto-coupled laser signals (Laser_Gate, Laser_A, Laser_B) |
5.0 |
100 mA [c] |
Internally powered |
Table 1: Power supply
[a]: The blue LED for power indication is on between 4.2 V and 6.2 V.
[b]: Information on where to measure the currently applied power at the card are given here.
[c]: The output or sink currents are listed in chapter Electrical Characteristics.