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SPEEDBOXMINI / ConnectorDetails-FrontPanel

Connector details (Front Panel)

Serial port 1

9 way D-type male connector

Serial connector pin out details
Pin Function
1* DO NOT USE
2* Receive
3* Transmit
4* DO NOT USE
5 GND
6 DO NOT USE
7 Power in +12v supply
8 DO NOT USE
9 DO NOT USE


Pulse output

BNC 50 ohm connector

Pulse output connetor details
Center Signal 0=0V 1=5V Max 5mA
Shield GND  


Trigger input

BNC 50 ohm connector

Trigger Input details
Center Signal 0.5V = low

high => 2.1V

Internal pullup to 2.5V

Shield GND  

NOTE: There is an internal debounce on the trigger input which means that only one edge will be detected during the debounce period (50ms). As such, when triggering on thin laser barrier strips or short button presses it is important to trigger on the first edge which will be seen, otherwise the trigger signal can be missed.


CAN port

9 way D-type male connector

CAN port connector pinout details
Pin Function
2 CAN L
7 CAN H
Termination None Fitted
Dominant bit >2.5 difference
Recessive bit <0.9 difference

NOTE: No internal CAN termination is fitted within the SPEEDBOX MINI, It is essential that the user fits appropriate termination if required. In general, if the SPEEDBOX MINI is at one end of a two node CAN network with a CAN logging device at the other end, then the SPEEDBOX MINI will need to be fitted with a 120Ω resistor between CAN H and CAN L in the cabling used to attach it to the network.

Page last modified on September 12, 2017, at 01:19 PM