CTP Systems DC2012, Instruction Manual, Page: 5 / 11

output. Lots of lights flash when it’s on so it’s not easy to forget. Commentator A output breaks once
every three seconds. Commentator B outputs twice, Guest three times and the mixed output is
continuous. Tone frequency may be set at 400Hz, 1kHz or 2kHz to avoid confusion with other tone
sources.
Comms box setup
All user settings on the comms box are controlled by the LCD display and its associated buttons.
Settings may be protected by switching the rear panel toggle switch to ‘lock’. When switched to’ lock’
the display will automatically switch to the top menu allowing only adjustment of the guest volume. All
other controls will be disabled.
Setup
From the ‘switch on’ menu select ‘Setup’
Mic Gains
This allows adjustment of individual microphone amplifier gains from +5dB to +70dB. Press the button
next to the mic amp you wish to adjust. The cursor arrows will move to show your selection. Press the
up/down buttons to adjust to the required gain. Either press the button quickly to adjust in 1dB steps or
hold the button down to adjust at speed. Press ‘back’ to return to the top menu.
Phantom
Each mic amp is shown with phantom on or off. Press the associated button to toggle phantom on that
channel on or off. Front panel LEDs will illuminate to indicate status with phantom on.
Limiters
Each microphone amplifier has its own limiter. To adjust the limit threshold select the required
microphone to adjust, the cursor will move to show the selection. Press up or down to adjust the
threshold to suit. If no limiter is required in circuit then adjust the limiter to it’s maximum threshold
(+24dB).
Mixed O/P
This allows selection of each microphone to the mixed output. It is important that if a mic amp is not in
use that it is deselected from the mixed output as otherwise the inevitable ‘open mic amp’ hiss will be
added to the mix. Also please note that if the guest’s mic is to be added to commentator A and B’s
listens (sidetone) then it must be selected to the mixed output.
Back
This returns to the previous menu.