From sam's laser faq:
"However, there is an additional 2 pin header on the controller which may be labeled: "Autostart Jumper" or "Interlock Jumper".
It is between the DB15 and Digital Controller connector. With a jumper installed, the laser will start up automatically upon power-on
even without anything attached to the DB15. I believe it will default to maximum (100 percent) power."
Ah, thank you. I was confused by this:
Even this minimal setup isn't needed for the C215M controller since there is a jumper that enables automatic start up at full power without anything connected to the user interface DB15. The jumper position is to the right of the DB15 connector. CAUTION: There is also a two pin header next to the power connector, function unknown - DON'T put a jumper there!
The pins you shouldn't touch are to the /left/ of the P4 power connector. So Zeta seems to have hooked everything up correctly.
Zeta, did you at one point hook anything up backwards? Hopefully nothing was fried...
Please try the following and report back:
- Connect to the analog interface and get some data out. Measure the voltage across pin 9 (GND) and pin 14 (Power Monitor Output). You will get a voltage between 0-5V, representing 0-100% power.
- Measure voltage across pin 9 (GND) and pin 4 (Laser Status). 0V = OFF, 5V = ON
- Measure voltage across pin 9 (GND) and pin 5 (Laser Diode Overcurrent Status). 0V = OK, 5V = Diode Overcurrent (very bad)
- Measure voltage across pin 9 (GND) and pin 6 (Thermal Control). 0V = OFF, 5V = ON (This must be ON for the laser diode to also be ON)
- Measure voltage across pin 9 (GND) and pin 7 (Baseplate Overtemperature). 0V = OK, 5V = FAULT
- Measure voltage across pin 9 (GND) and pin 12 (Heatsink Overtemperature). 0V = OK, 5V = FAULT
- Measure voltage across pin 9 (GND) and pin 15 (Laser Ready). 0V = Not ready, 5V = Ready (power setpoint is within acceptable range)
I'm not sure that you'll get 5V on these pins, but anything that isn't close to 0V should signify TTL "HIGH"