MV pinout and description
| ||Pin ||Pin Name |
(Pinout is viewed on the back of the camera, or at the solder-end of the mating connector)
|1||POWER||FireWire cable power, 8-30 V DC (typically 12 V)||Maximum current available from this pin is 250 mA.|
|2||TRIGGER+||Positive terminal of optically isolated trigger input|
To initiate a "positive" trigger, apply a voltage of between 5V and 12V (4-11 mA) to the trigger terminals.
The optically isolated trigger input circuit includes an internal 1 Kohm series resistor. When using a voltage higher than 12V, add an external resistor with adequate power rating.
A typical application of the trigger input is to connect Pin1 (POWER) to Pin 2 (TRIGGER +) and use the open collector output of an external position sensor device to complete the circuit from Pin 3 (TRIGGER -) to Pin 4 (GROUND).
PixeLINK API-Refer to the functions PxLSetFeature, PxLGetFeature and Trigger Types.
|3||TRIGGER-||Negative terminal of optically isolated trigger input.|
|4||GROUND||Logic and chassis ground|
|5||GP1||General Purpose Output (GPO) 1, for strobe|
Open-collector current sink output from optical isolator. Provides current sink to Pin 4 (GROUND) when GP1/GP2 (as appropriate) is active.
Maximum current is 15 mA.
Maximum voltage with respect to ground is 40 V.
PixeLINK API-Refer to the functions PxLSetFeature, PxLGetFeature and GPIO Types.
|6||GP2||General Purpose Output (GPO) 2, for strobe|
MV interface schematic
The trigger inputs are designed to work with a floating differential signal which will operate with a supply voltage between 5V and 12V across the trigger terminals. With the Trigger polarity set to Positive, a rising voltage will cause a trigger. A falling voltage will cause a trigger if the trigger polarity is negative. The trigger input can be either positive or negative pulse. The minimum pulse width depends on the debounce delay set in the camera – typically at least 50 microseconds for analog signals and at least 1 microsecond for TTL signals.
The GPO pins are open-collector current sink outputs. The GPOs can handle a maximum of 15mA and 40V with respect to ground. To use them with TTL inputs, the GPO output lines must be pulled high with a 1K ohm resistor.