Camera Facilities ltd.


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Camera Facilities, one the UK’s foremost digital camera rental companies is based on the lot at Pinewood Studios providing 35mm Digital Cameras, Lenses, Grip and Lighting Equipment.

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Ambient: ACL-204 Lockit Sync Box

Time Code and Sync Generator


The ACL204 is the flagship of a new Ambient Clock Network generation. For about 20 years the Ambient Lockit is the market leading portable, time code and sync generator worldwide. Like all Clockit devices the ACL204 is based around a highly accurate, tunable, temperature compensated crystal. This way it is used to synchronize different devices without any cables or fragile wireless transmission.

This package includes:

ACL-204 Lockit Sync Box
Timecode In/Out 5-Pin – 5-Pin Lemo unidirectional Cable

Surpassing the already comprehensive facilities of its predecessor it not only covers all timecode rates and sync formats but it also allows the user to apply an offset to the TC output to allow for the processing delay created in some HD cameras.

3D camera rigs can be made lighter and neater by utilising the 2nd TC output, and the sync OP which can be switched to drive a dual load.
The integrated transceiver and the 2nd Lemo socket can be used to interface with the Clockit Network System. It also allows the ACL 204 to work as a fully functional, generator buffered wireless Time Code transceiver.

To accommodate for all this the hardware has been completely revised into a flexible, fully programmable FPGA architecture. A front loaded OLED display will give instant visual feedback about the current configuration and assist while moving through the menu to make adjustments.

This is now done on the fly with an easy to operate one-finger navigation system - no more need for screwdrivers or powercycling the unit.

An intelligent algorithm will prevent configuration of improper, mismatched TC and Sync rates or unintended alterations to the setup.

Still being a simplistic TC and Sync box at the core driven by 2 AA cells in the familiar rugged footprint the ACL204 can be considered the pinnacle of portable synchronization.

Time code:                     SMPTE / EBU (23,976, 24, 25, 29.97, 30 fps, 29.97/30 drop frame)

Sync Formats:

NTSC:                             59.94i
PAL:                                50i
720p:                              23.976, 24, 25, 29.97, 30, 50, 59.94, 60
1080i:                             50, 59.94, 60
1080psF:                       23.976, 24, 25, 29.97, 30
1080p:                           23.976, 24, 25, 29.97, 30, 50, 59.94, 60
Word Clock:                  32, 44.1, 48, 88.2, 96, 176.4, 192 KHz, pull-up / pull-down
Black Audio AES3:      Sample rates as above

Click the following links to download the files:

1. Ambient Lockit Sync Box ACL-204 User manual Download