Daktronics All Sport 5100 Timer - Manual (Page 44)

4-8 Oval and Lane Track
Photocell Timing Operation
4.5 Photocell Timing Interface
Reference Drawings:
AS 5100 Photocell Interface 25Pin PCB J-Box Pinout Drawing A-143444
AS 5100 Photocell Interface J-Box Wiring .................. Drawing A-143453
Photocell connections to the console are made using the AS5100 Photocell Timing
Interface (0A-1196-0058).
For most permanent installations, an external junction box will provide all photocell
and scoreboard connections. Simply connect the 25-pin jack labeled "To J-Box" to
the 25-pin connector on the J-box. Refer to Drawings A-143444 and A-143453 for
detailed information regarding J-box wiring. For electrical isolation protection,
disconnect this 25-pin cable after each racing event.
A common start input is available on jacks J44 (photocell XLR) and J42 (banana
plug switch input). This input is used in multiple-lane track timing only. Refer to the
Section 5 for additional information on multiple-lane track timing.
Photocell Inputs
Use the XLR connectors on the rear plate of the photocell interface when there are
no J-box connections at the track, or for a portable installation. Plug the individual
lane start and stop photocells into the rear panel XLR connectors as labeled. Any of
the Lane 1 or Lane 2 photocell inputs may be used with the oval track photocell
timing code (Code 300).
Switch Outputs
Connect the photocell interface to the All Sport 5100 console via a 15-pin cable
(W-1264). Attach this cable to the connector labeled "To A/S 5100" on the rear
panel of the photocell timing interface and J8 on the All Sport 5100.
Power Connections
A 120 V line connection powers the photocell interface. An internal 12 V battery is
included for backup purposes only. If battery operation becomes necessary for
portable operation or in an emergency, press the button labeled "Bat Op" while
turning the power switch "ON."
The green LED on the front face of the enclosure indicates power to the photocell
interface. The red LED indicates that the internal battery is being charged.