LockitBT (ACN-LB) - Timecode & Sync Generator

LockitBT – the Timecode and Sync Generator

Ambient Timecode is synonymous with precision and reliability. The world's most respected post-productions insist on using Ambient Timecode on set because it saves them valuable time. Why does timecode save time? Find out here.

Zero Drift

The Ambient Communication Network (ACN) is our own wireless network that connects all Lockit boxes on set. When C-Jam (Continuous Jam) mode is activated, all Lockit devices are constantly synchronized with each other. This allows us to achieve "Zero Drift" over an entire day of shooting – in other words: an incredible 0.0 ppm drift.

ACN – Ambient Communication Network

ACN is our own stable, interference-resistant radio network through which Lockit devices communicate with each other. This makes the connection independent of interference, poor network coverage or other adverse radio conditions on set. Learn more about ACN here.

Bluetooth Interface

Compared to the Lockit (ACN-CL), the LockitBT has an additional Bluetooth interface. This enables remote control via the “LockitRemote” smartphone app (available free of charge for iOS and Android) and the transmission of timecode information to compatible devices from other manufacturers.

LockitRemote App

Connect your LockitBT via Bluetooth and adjust all settings directly on your smartphone. You control the entire LockitBT menu and can start the C-Jam Master. In the “ACN Radar” you monitor and control all Lockit devices on the same ACN channel – even older models.

Tutorial LockitRemote App
Download LockitRemote App

One Button Syncing

Press the green button on one of your Lockit boxes for 3 seconds, and via ACN all other Lockits (in the same ACN channel) are synchronized in terms of TC and frame rate. This one-time sync already ensures perfect frame accuracy for the whole day of shooting.

TX Mode

In TX Mode, the LockitBT becomes a timecode & genlock bridge: it waits for an external timecode signal and automatically adapts its speed to that source. It then passes timecode and sync on to all other Lockits via ACN. This is especially useful if you want your audio recorder to be the master clock on set or if your studio already has a studio master clock – as well as for playback shoots or virtual production setups. The source can be LTC via cable or MIDI timecode from your computer.

To start TX Mode, press and hold the red button, then tap the power button. You can find a step-by-step guide to TX Mode in our FAQs.

TC & Sync Offset

Some cameras always lag behind by one or more frames, even though they are fed the correct timecode. The reason is an internal processing delay in the camera. To fix this, you can set an individual offset on the LockitBT. Find out how in our FAQs.

App or Display Menu

In addition to the LockitRemote app, the LockitBT can also be set up using the haptic OLED display menu (briefly press the red and green buttons at the same time to open it).

Battery

With a single standard NP-50 battery with 750 mAh, the LockitBT lasts about 14 hours. Communication via ACN (C-Jam mode) only slightly affects the runtime.

The replaceable lithium-ion battery can be charged during operation. The NP-50 battery is widely used in the pro audio industry and is often available with inexpensive chargers. Spare batteries are available in our shop.

All Sync Formats

Designed for today’s equipment, the LockitBT supports 1080P and 1080i genlock for project rates from 23.976 to 60 FPS, covering all the camera sync signals you need. For audio recorders, wordclock from 48 to 192 kHz is available.

Outputs

Two 5-pin ports (Lemo-compatible) give you maximum flexibility, and you can keep using your existing cables. TC in and out follow the industry standard and allow you to feed two cameras with timecode in parallel or to jam via cable while the LockitBT is connected to a camera.

One port carries timecode and genlock/wordclock, the other timecode and the serial ACN metadata signal. So you are free to use one output for sync and the other for timecode, or a Y-cable carrying both signals.

MIDI Timecode

While LTC timecode is output via the 5-pin ports on the side, MIDI timecode can be tapped via the USB-C interface. For example, to feed timecode to the DAW (Digital Audio Workstation) on your laptop. Some camera types also accept MIDI timecode via a standard USB cable.

Powering and charging

A reversible USB-C port is used for charging and external power. Connect your LockitBT to a Mac, a PC or a compatible camera and it automatically becomes a MIDI timecode interface.

Recommended Camera Mount

LockitMount