On powering up, Lockit devices will generally start up with unset generator and thus in idling slave
mode with a red flashing LED. Then assign one (and only one) deliberate unit as “Master” in its ACN
menu and never worry about TC for the rest of the day as long as this Master keeps running. This
Master will be identified by a dedicated blink pattern and “M” will show up in the lower right corner of
the OLED. The other units will then jam their generators and framerate and follow as “Slaves” indicated
by “S” and an according blink code. The intelligent C-Jam algorithm will automatically improve the
accuracy and establish zero latency, zero drift lock between units within the ACN.
With an active “Master” in range “Slaves” will automatically re-jam after powering on or a battery swap.
As ACN broadcasts only happen every 6 seconds, it may take this long for a freshly booted “Slave” to
pull in. If “Slaves” lose connection to a previously present “Master” they will keep their loyalty for 30
seconds and then switch over to “(S)” which means you can assign another unit as “Master”.
For more detailed information please refer to the dedicated ACN background chapter.
Note: Always make sure just one unit is set to “Master”.
“TRX” transforms the unit into an ACN based TC radio link with a twist. Without TC source the units will
idle slowly blinking red and wait for either physical TC injection or signal via ACN. On detection of an
external SMPTE LTC or MIDI TC source the device will automatically transform into transmitter
(indicated by “TX” on OLED and according blink code) and send TC status and frame rate to other units
(now marked “RX”) which will again automatically follow. Source detection is fully automated, including
bidirectional MTC/LTC conversion: No TC output with no TC connected or stopped, “standing” TC
(repeating frame at frame rate) with standing TC on TX input and running TC with TC source running.
This combines the transparent action of a “classic” timecode radio link with the drop-out proof concept
of a freewheeling generator and the intelligent, adjustment-free ACN algorithm.
“Ext TC”: In this mode the device serves as a bidirectional LTC to MIDI TC convertor. TC will be displayed
on LED display of Lockit Slate. Useful in studio environments to sync TC between external equipment
and digital audio workstation where ACN is a not required feature.
“Reader”: Only available on LockitSlate, this mode allows to visualize external LTC on the slate. No MTC
conversion, no output, no ACN, but the slate will follow TC playback in low or high speed and even
reversed which makes it the preferred mode for special effect shots.
Note: As these modes are not suited for proper synchronization selecting a sync output is not available
in “TRX”, “Ext TC” and “Reader”.
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