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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.

Pangolin LD400-DB25 - Connector and Signal Specifications

Pinout for the DB-25 connector on the back of the QuadMod16 card for the Pangolin LD400 Amiga based software - for complete details, contact info@pangolin.com


DB-25 Connector Pinout

Pin Number Signal Name
1 X-axis output; +/- 5 volts (-left, +right)
2 Y-axis output; +/- 5 volts (-bottom, +tip)
3 Z-axis output; +/- 5 volts (-rear, +front)
4 Analogue ground
5 Analogue ground
6 Analogue ground
7 Not connected
8 Not connected
9 Depth cueing input (connects to pin 3; see note 1)
10 Blue; 0-5 Volts (0V no colour, 5V Full colour)
11 Green; 0-5 Volts (0V no colour, 5V Full colour)
12 Red; 0-5 Volts (0V no colour, 5V Full colour)
13 Point Sample (+5V pulse each time a point is output)
14 Point status bit 7: 0V during track, 5V at end of track (last point)
15 Point status bit 6: 0V visible point, 5V blanked point (inverted blanking)
16 Point Status bit 5: 5V visible point, 0V blanked point (normal blanking)
17 Point Status bit 4: (reserved for future use)
18 Point Status bit 3: (reserved for future use)
19 Point Status bit 2: (reserved for future use)
20 Point Status bit 1: (reserved for future use)
21 Point Status bit 0: (reserved for future use)
22 Shutter control; 0V closed (no laser, 5V open (laser on)
23 Digital ground
24 Digital ground
25 Digital ground

Signal source connector on the back of the Quad Mod 16 is a DB-25 female - Input to consoles and projectors should be a DB25 male connector.


Signal Specification

The first 13 lines are analogue signals, terminated with a 100 ohm resistor. The last 12 lines are digital signals, direct from a TTL level chip. Because the digital outputs have no protection, be careful when connecting to these lines that you do not send voltages into the TTL chips.



The analogue grounds are all tied together, You can use pin 4, pin 5, pin 6 or all three. Similarly, the digital grounds (pins 23, 24 and 25) are tied together.
However, the analogue and digital grounds are different and separate grounds. Do not use an analogue grounds with a digital signal, and vice versa.


Note 1 - Depth cueing

Pin 3 (Z axis output) should be connected to pin 9 (depth cueing input). Just solder a wire from pin 3 to pin 9, inside the DB25 connector.


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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