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The Ambient Master Lockit is the Lockit flagship and hub of the sophisticated ACN System.

It is a timecode master and "On the Set" metadata server. With its dual processor architecture, the Master Lockit truly is the most powerful timecode device we have ever built. Using the acclaimed Lockit timecode generator with its rock-solid, high-accuracy, temperature-compensated oscillator, along with the sophisticated ACN, the Master Lockit offers features like generator-buffered timecode transceiving or 0.0ppm drift between linked units through the unique continuous jam with control and monitoring through the integrated web GUI.

DIT Features
With the LockitScript app, script supervisors note content information for every single clip. The Master Lockit Web Interface enables DITs to download important clip-based content information as e.g an ALE-File for direct import into your pregrading software.

Interfaces with cameras for critical metadata collection including full ARRI & RED support
Ambient has partnered with ARRI and RED to integrate ALEXA and RCP metadata protocol into the ACN-ML.
This enables the Master Lockit to supply the cameras with driftless timecode while simultaneously collecting all provided metadata.

Built-In WiFi router shares ACN collected data between multiple iPads
While the internal memory centrally stores and hosts all metadata collected through ACN connected units, iPads running LockitSCRIPT and TonMeister apps automatically sync their data though the Master Lockit's router functionality.
Meanwhile, a local data backup is preserved on ACN devices and the apps for maximum data safety or later synchronization with the hub.

Double Timecode and Power I/O
In addition to the double timecode interface and ACN antenna port, the ACN-ML provides two DC I/O connections for power loop-through capability. The built-in Li-Ion backup battery is automatically charged with external DC and keeps the unit including WiFi up and running for more than 4 hours.
The dual USB port is used for the included WiFi stick, and of course, available for product enhancements. The Ethernet port can be used to collect metadata from the ARRI ALEXA and to update the firmware. Furthermore, it can be used to access the web interface with your Notebook via ethernet, enabling control of all Lockits on set. The ACN timecode port additionally works as serial interface to read out all RED cameras except for the RED One.


  • TC & TRX
  • ACN inside
  • Ext. Power: 6,5-24V Hirose
  • Int. Power: Backup battery
  • OLED Display:
  • Metadata: RED cameras, ARRI Alexa, Sound Devices (788T / 6 series)
  • Ethernet/WiFi:
  • Specifications

  • Integrated web server, router, and metadata storage
  • Remote control of ACN ready Lockit devices via built-in web-access.
  • Collects and stores all ACN distributed metadata
  • Forwards metadata to iOS devices
  • WiFi routing for communication between LockitSCRIPT and TonMeister apps
  • Reads and stores ARRI ALEXA metadata via Ethernet
  • Reads and stores record start/stop TC of all cameras with GP I/O or LANC
  • Highly accurate Lockit timecode generator
  • Generator buffered timecode transceiver
  • Drift of less than 1 frame a day (~0,1ppm)
  • No drift at all within the ACN
  • Supports all SMPTE frame rates
  • Sunlight readable OLED Display
  • Adjustable timecode output for recording TC on audio track
  • Material: rugged, anodized aluminum
  • Dimensions: approx. 121.5 x 66 x 30 mm
  • Weight: approx. 300 g
  • Manufacturer Part Number : ACN-ML



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