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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.

Cambridge Technology Inc. logo

Cambridge Technology Inc., Series 678XXX Single Scan Amp Board

Pinout for the Cambridge technology 678XXX single axis scan amp board used to drive CTI 6800 series galvos. This is not an official CTI document, for the latest version, contact mcasey@camtech.com

CTI 678XXX scan amp diagram

J1 - 10 pin Power and Input

Pin Number	Signal Name
1	- Drive [-24 VDC]
2	- Drive return [-24 supply ground]
3	Mute
4	Command [input] ground
5	Command [input] +
6	Command [input] -
7	N/C
8	N/C
9	+ Drive return [+24V ground]
10	+ Drive [+ 24 VDC]

J2 - DB9 Scanner connector

Pin Number	Signal Name
1	Motor drive +
2	Motor Shield
3	AGC return
4	Diode Common
5	1A [PD output]
6	Motor drive -
7	PD shield
8	AGC out
9	1B [PD output]

Trimmers

Trimmer	Function
R60	Position Detect Linearity [Lin]
R13	Position Detect Scale factor [PSC]
R25	Low Frequency Damping [LED]
R28	Servo Gain [SGA]
R42	High Frequency Damping [HFD]
R69	Position In Offset [IOF]
R70	Position In Scale [ISC]

Test Points

Test Point	Function
TP1	Position Signal, VP
TP2	Ground
TP3	Current Monitor
TP4	Motor Voltage , +M
TP5	AGC Out
TP6	Summing Amp Input
TP7	Notch Filter Output

J4 - 4 pin

Pin Number	Signal Name
1	Position Out
2	Velocity Out
3	Error Out
4	Ground

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