Laser Output Connectors

The Laser Output has two 7-pin terminal block-style connectors and supplies connections to the laser control outputs. Three laser output signals are available as optically-isolated or as 5V TTL signals. You can wire the optically-isolated outputs in a sourcing or sinking configuration.

To set the active polarity of the laser output signals, use the switches on the top of the GL4. Refer to Laser Output Polarity Switches

To turn on the output and activate the laser, move the switch to the OFF position. This is the Normally-Open configuration. The laser output is fully turned on when one of these conditions occurs.

• The optically-isolated output conducts current.
• The TTL output is 5 V.

To select the opposite polarity, move the switch to the ON position. This is the Normally-Closed configuration. When the GL4 is powered off, it does not continue to support this configuration. This configuration is not a fail-safe feature.

Table: Laser Output Connector A Pinout

Pin #	Label	Description	In/Out/Bi	Connector
1	O1+	Laser Output 1+ / PSO Output(1)	Output
2	O1-	Laser Output 1- / PSO Output(1)	Output
3	O2+	Laser Output 2+	Output
4	O2-	Laser Output 2-	Output
5	O3+	Laser Output 3+	Output
6	O3-	Laser Output 3-	Output
7	GND	Ground	N/A
(1) Refer to Position Synchronized Output (PSO) for more information

Table: Laser Output Connector B Pinout

Pin #	Label	Description	In/Out/Bi	Connector
1	O1	Laser Output 1 / PSO Output (1) (5V TTL)	Output
2	GND	Ground	N/A
3	O2	Laser Output 2 (5V TTL)	Output
4	GND	Ground	N/A
5	O3	Laser Output 3 (5V TTL)	Output
6	GND	Ground	N/A
7	+5V	5 Volt Power Supply (500 mA)	Output
(1) Refer to Position Synchronized Output (PSO) for more information

Table: Mating Connector Part Numbers for the Laser Output Connectors

Specification		Description
Type		7-Pin Terminal Block
Part Numbers		Aerotech: ECK02403
		Phoenix: 1908114
Conductor Cross Section	Solid or stranded	20...26 AWG (0.14...0.5 mm2)
	Stranded, with ferrule, without plastic sleeve	20...24 AWG (0.25...0.5 mm2)
Conductor Insulation Strip Length		8 mm (5/16 in)
(1) Refer to the manufacturer website for additional information.

Table: Laser Output Specifications

	Specification	Value
Isolated Output	Maximum Frequency	5 MHz
	Voltage	5 - 24 V
	Output Current	≤ 50 mA
5V TTL	Maximum Frequency	10 MHz
	Voltage	5 V
	Output Current	50 mA

Figure: Laser Interface Outputs

Figure: Current Sinking Configuration with Isolation

 

Figure: Current Sinking Configuration without Isolation

Figure: Current Sourcing Configuration with Isolation

 

Figure: Current Sourcing Configuration without Isolation

Figure: TTL Output