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Laser Show Systems - Pinouts

DISCLAIMER: The pinouts shown here were contributed by manufacturers, vendors and individuals. While every effort has been made to insure accuracy, LaserFX.com can not be responsible for any errors or omissions.


Lasermedia LM22SDA dual channel drive amp

Pinout for the connector and on-board controls of the Lasermedia LM22SDA dual channel drive amplifier for use with G100PD galvos. This is NOT an official Lasermedia document - for the latest info, contact Lasermedia.

Lasermedia LM22SDA dual channel drive amp diagram

This drive card has been superseded by newer designs but is still found in older equipment and is often available on the used/surplus market.

P1 - Input connector

Pin Number Signal description
1 X input (-) - See notes
2 X input (+) - See notes
3 X Position/velocity signal out - Jumper selectable WX1
4 Signal ground
5 Y Position/velocity signal out - Jumper selectable WY2
6 Y input (+) - See Notes
7 Y input (-) - See notes


Balanced input signal ports are provided: X (+)/X (-) and Y (+)/Y (-). Standard configuration is single-ended inputs; I.E.: X(-) and Y (-) are grounded.
Input polarity may be inverted by DIP switches SX and SV
Pins 3 and 5 are buffered position or velocity signal outputs.


P2 - Output Connector DB15

Pin Number Wire Colour Signal description
1 shield/orange/brown Y common
2 red Y position (+)
3 red/green Y galvo drive coil (+)
4 white Y oscillator power (+12V)
5 white X oscillator power (+12V)
6 red/green X galvanometer drive coil (+)
7 red X position (+)
8 shield/orange X common
9   Y common
10 black Y position (-)
11 Black/yellow Y galvo drive coil (-)
12 N/C No Connection
13 black/yellow X galvo drive coil (-)
14 black X position (-)
15   X common


Colours shown are representative of General scanning G100PD type galvos


DISCLAIMER: Some of the information in the Backstage area is provided by the persons or companies named on the relevant page(s). Laser F/X does NOT endorse or recommend any products/services and is NOT responsible for the technical accuracy of the information provided.  We provide this information as a service to laserists using the Backstage area. 

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