ACN-TL
Rev. 6.00
©2019, Ambient Recording GmbH
20
10.
ACN
Aside time code and sync, ACN is the key feature of the current Ambient Lockit range. It is a proprietary
wireless protocol, specifically engineered for highest reliability, data integrity, and range. It operates on
2.4GHz using channels 11-26 of the IEEE 802.15.4 LR-WPAN standard. This standard is designed to
allow for friendly coexistence of different systems on the same channel. Still, equivalent ARRI remote
focus equivalents listed to further help avoiding interferences.
ACN
ARRI EMIP WRS
Channel Center Frequency [MHz]
Channel
11
2405
12
2410
0
13
2415
1
14
2420
15
2425
16
2430
2
17
2435
3
18
2440
19
2445
20
2450
4
21
2455
5
22
2460
23
2465
24
2470
6
25
2475
7
26
2480
The ACN features 2 operation modes, the
standard “
C-
Jam” and “TRX”.
C-Jam
Building up on the tunable oscillator C-Jam dynamically adjusts the accuracy from better than frame
accurate down to video line level grade.
All that is needed is an arbitrary number of Lockit devices set to C-Jam mode and one of them
configured to be the C-Jam master. The C-Jam master will then send out broadcast pulses which the
slaves will respond to and in case they detect a discrepancy automatically correct their pace. This will,
however, in no way sacrifice the unparalleled, self-contained accuracy. In case the radio cuts out, all
units will continue to operate as used to.
C-Jam can additionally be used to set up a metadata network on the set to collect, con- and distribute
metadata between different units and departments. At the core will be at least one MasterLockit(Plus)
acting as server and used to monitor and control all other ACN enabled devices remotely via a web
interface that is accessible from any modern unit with internet browser.
