Laser LS8000-3 manual High Speed Pulse Output Pins 3, 5, 7

LaserSpeed 8000-3 Instruction Handbook

Interfacing with the LS8000-3

High Speed Pulse Output (Pins 3, 5, 7, 9)

This quadrature pulse output is a high-speed RS-422 drive output with an output rate up to 5MHz. This pulse output uses an RS-422 transceiver to generate its output signals, and so should be connected to an RS-422 transceiver on the receiving end. These pulse outputs can be connected to a PLC high speed counter card for fine length resolution and high-speed velocity measurement.

If you need to convert the differential RS-422 level pulse signals to TTL levels, Beta LaserMike recommends that you use the following circuit:

PHASE_A_TRUE

PHASE_A_FALSE

PHASE_B_TRUE

100

+5V

1	0.1uF
+5V

8 A	RO	2
7 B

		MAX3462/MAX3467
6 Z		or equivalent
	DI	3
5 Y

GND 4

+5V

	1	0.1uF
	+5V
8 A		RO 2

PHASE_A_TTL

PHASE_B_FALSE

100

7 B

		MAX3462/MAX3467
6 Z		or equivalent
	DI	3
5 Y

GND 4

PHASE_B_TTL

The High Speed Pulse Output can be reconfigured to output several different status outputs using the High Speed Pulse Output Configuration setting. See the Configuration Settings section for details.

Part No. 93463 / Drawing No. 0921-01561 Page 37 of 221 Revision A (Sep 2007)