Control box above; cables below

The Multi-Trigger 3 (MT3) is an upgrade from the Multi-Trigger 2. Improvements include greater ease of use, an additional 4 outputs on the lid of the box for camera and flash, elimination of the focus/review switches for the camera shutter, pulse outputs for diagnostic purposes, and a label designed specifically for the MT3. The MT3 has all the same functions as the previous model. These include:

• all components hard-wired for durability
• operates either on a 9V battery or an optional 120-240 VAC to 9 VDC adapter
• LEDs to indicate power on, photogate alignment, and event triggering
• test button to produce output pulses without a sensor cable connected
• inputs for microphone and photogate sensors as well as external triggers
• selector for microphone or photogate input
• fine (up to 0.05 s) and coarse (up to 0.5 s) delay adjustments
• selector for one of two delay ranges (0 to 0.5 s or 0 to 0.05 s)
• continously-variable timeout setting up to 1 s
• instant and delayed optically-isolated outputs

The MT3 kit includes all the parts for the (i) control box, (ii) the microphone cable, and (iii) one of the two types of photogate cable. The MT3i version of the kit includes parts for the interrupter-type photogate. This is version you would choose if you were, for example, using the MT3 in conjunction with the AstroSplash Drop Controller to capture drop collisions. If, on the other hand, you need a photogate cable with variable width for larger objects, you would select the MT3v version.

If you want both types of photogate cable, you can order the second type from the MT3 accessories page. Also see the accessories page to order the optional 9V AC/DC adapter.