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USC-3 Manual > Electrical Characteristics > Outputs

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Laser_Gate, Laser_A, Laser_B (Laser Signals)

Supply voltage

5.0 V (default: internally powered)

Default polarity

Active low

Max. output current

25 mA each, 70 mA in total

Output voltage

4.9 V @ circuit closed, no load

3.5 V @ circuit closed, max. output current

Rise time

< 10 ns

Fall time

< 10 ns

Min. frequency

0.19 Hz

Max. frequency

4 MHz

Table 3: Laser_Gate, Laser_A, Laser_B

Laser_Port (8 bit digital)

Default polarity

Active high

Max. output current

25 mA each, 75 mA in total

Output voltage

5.0 V @ circuit closed, no load

3.5 V @ circuit closed, max. output current

Rise time

< 5 ns

Fall time

< 5 ns

Table 4: Laser_Port

DAC_A, DAC_B (12 bit analog out)

Max. output current

15 mA

Max. output voltage
adjustable via software

2.5 V

5.0 V

10.0 V

Max. frequency

800 kHz

Table 5: DAC_A, DAC_B

Opto_Out logic circuit

Type

Open-collector with internal 4k7 pull-up resistor

Supply voltage

5.0 V to 24.0 V (default: not powered)

Position of load

Chosen Opto_Out in respect to Opto_GND

Default polarity

Active low (low = logic circuit open)

@ 5 V Opto_VCC supply:

Max. output current

0.33 mA each

Output voltage

5.0 V @ no load

3.5 V @ max. output current

0.6 V @ circuit open

Rise time

< 3 µs

Fall time

< 150 ns

@ 24 V Opto_VCC supply:

Max. output current

1.53 mA each

Output voltage

24.0 V @ no load

16.8 V @ max. output current

0.7 V @ circuit open

Rise time

< 2 µs

Fall time

< 140 ns

Table 6: Opto_Out logic circuit

Opto_Out relay circuit

Type

Open-collector with internal 4k7 pull-up resistor

Supply voltage

5.0 V to 24.0 V (default: not powered)

Position of load

Opto_VCC in respect to the chosen Opto_Out

Default polarity

Active low (low = relay circuit closed)

@ 5 V Opto_VCC supply:

Max. sink current:

35 mA each

Load voltage

4.4 V @ no load

4.2 V @ max. output current

@ 24 V Opto_VCC supply:

Max. sink current:

35 mA each

Load voltage

23.3 V @ no load

23.2 V @ max. output current

Table 7: Opto_Out relay circuit

Digi_Out

Default polarity

Active high

Max. output current

25 mA each, 75 mA in total

Output voltage

5.0 V @ no load

3.5 V @ max. output current

Rise time

< 5 ns

Fall time

< 5 ns

Table 8: Digi_Out

5V Output (pin37, pin 38) on Extension Connector

Max. output current

150 mA in total

Output voltage

5.0 V

Table 9: 5V Output on Extension Connector

Stepper_Out

Default polarity

Active high

Max. output current

25 mA each, 75 mA in total

Output voltage

5.0 V @ no load

3.5 V @ max. output current

Rise time

< 5 ns

Fall time

< 5 ns

Table 10: Stepper_Out

RS-232_Out

Output voltage

+- 5.6 V @ no load

Rise time

< 500 ns

Fall time

< 650 ns

Table 11: RS-232_out

Scanner outputs (each head for XY2-100 and XY-SCAPS interface)

Output voltage

5.0 V @ no load

Rise time

< 20 ns

Fall time

< 20 ns

Table 12: Scanner outputs

FA, MIP, OP (LED indicator pins)

Default polarity

Active high

Max. output current

6.9 mA

Output voltage

3.2 V @ no load

2.2 V @ max. output current

Rise time

< 20 ns

Fall time

< 20 ns

Table 13: FA, MIP, OP