The Lockit

The new core member of the lockit family

 Downloads | Timecode Cables | Timecode Tutorials | Cable Guide

There will always be “The Lockit”




Since its first appearance in 1993 the ACL “Lockit” has become synonymous for reliable on-set synchronization.

Over time it was updated with a host of features we now take for granted from HD sync to metadata. Two AAs soon replaced the 9V battery, flying leads changed to fixed sockets, the BNC timecode output was sacrificed in favor of a second push-pull socket supporting TC I/O and a serial metadata port, a display-guided menu thrown in and, of course, we introduced the ACN, a powerful wireless timecode and metadata network.

Despite all these changes and a massive increase of processing power, we were able to maintain its iconic form over all those years – until today that time has come to say good bye and welcome….

Introducing the New Lockit

Being a Lockit at its core, the ACN-CL carries the DNA of its predecessors and inherits all the unique and appreciated features, combined with the unprecedented ease of use that has been first introduced with the NanoLockit.





Running off a changeable Li-Ion battery that can be charged in the unit while operating makes sure you never be let down with depleted power when you need it the least.

The supplied NP-50 type battery is not only widely available along with economically priced chargers but also used by top tier professional radio mic brands which further helps reducing the variety of gear to carry along.

Connected to a Mac or PC the USB-C port also serves for deep level settings or MIDI timecode I/O without additional configuration.


Just like the NanoLockit, jamming units to time of day with the internal Real Time Clock is a one button experience, but with the additional perk of a crisp OLED display. Lockit can also operate as master by automatically jamming units that are added or restarted during the day.
The OLED also brings the useful timecode compare tool introduced with firmware 6.0 so it is easy to determine if other equipment is still in sync – with an accuracy of 1/100 of a frame.

Size and Signals


While our smaller units were always marked by a prefix such as Tiny or Nano, the ACN-CL proudly carries the name “Lockit” and it wouldn’t do so without supplying both timecode and sync signals.

Designed for today’s equipment it supports 1080P and 1080i genlock for project rates 23.976 to 60 FPS while audio recorders are covered with wordclock up to 192 KHz.


Two Lemo-compatible push-pull sockets provide maximum flexibility and continued use of available cables. TC in and out follow industry standard and allow for syncing of 2 cameras in parallel or jamming via a cable while leaving the synced unit connected.
The primary output carries timecode and genlock/wordclock. This gives you the freedom to choose running it either on straight, Y-split cable or 2 separate leads using the second connector for timecode which also connects to devices that support ACN for metadata transfer.

Powering and charging

External power and charging are available through a common USB-C port. Connected to a Mac or PC the Lockit transforms into a MIDI timecode interface without additional configuration and allows for deep level editing of the settings.
Not just for the bling the sync LED is now full RGB so we have another color for status indication and party mode. We fit all of this and more in a compact solid aluminum case that makes the ACN-TL TinyLockit and even ALL601 LancLogger look large by comparison.

The old Lockit is dead, long live the Lockit!

Cable Guide for ARRI Cameras










Cable Guide for RED Cameras



DSMC 1 & DSMC 2 + Expander w/ 4-pin SYNC port




DSMC 2 with REDVOLT Expander or Production Module,


Cable Guide for Cameras with BNC Timecode Interface



Blackmagic URSA,

Canon Cinematic,

Panasonic Varicam,


Cable Guide for Cameras w/o Timecode Interface



Blackmagic Pocket Cinema,

DSLR Cameras

Cable Guide for Audio Recorders



Sound Devices Scorpio, 6-series, 7-series, 8-series,

AATON Cantar X3, Cantar Mini,




Sound Devices MixPre-10T,
Sound Devices MixPre-10 II,




Sound Devices MixPre-3 (II), -6 (II),


Cable Guide for Audio Recorders w/o Timecode Interface








Included Accessories

  • 1 NP-50 compatibly Li-Ion battery
  • 1 USB-C to USB-A cable
  • 2 pcs double lock
  • Handbook
Technical Details
23.976, 24, 25, 29.97, 29,97Drop, 30 FPS
SMPTE 12 M, 3V TTL, adjustable down to mic level
1080i/PsF and 1080p tri level from 23.976 to 60 FPS
Automatic load switching for 2 cameras
PPF shutter sync
TC & Sync Socket
TC & ACN Socket
(accept Lemo FGG.0B.305 and compatible push-pull plugs)
USB-C 2.0 for powering, charging, data connection and MIDI timecode
SMA-RP antenna (2.4 GHz)
256 * 32 OLED
Material: anodized, pearl blasted aluminum
Dimensions: 65.6 mm (2.58”) x 44.0 mm (1.73”) x 20.0 mm (0.79”)
Weight (without batteries): 80 g (2.82 oz)
Li-Ion, NP-50 type
USB (BC 2.1 compliant LPS source) 350mA max.
CR2016 Lithium cell to keep course date and time of day



SYNC-OUT cable, 5-pin Push-Pull connector to BNC/M 90°


Timecode In/Out Cable