Input Controls; I/O Box Input Port; The Channel Input - Calrec SUMMA User Manual

INPUT CONTROLS

With the touch display in 'active Show' view, tap the input processing tab to view all input controls for the currently ac-
cessed channel or group.
Depending on the type of input port that is connected to a channel, you will see some or all of the controls described
here. The input controls window is split into three sections, the header contains general controls, the physical I/O box
port controls are on the left and Summa's channel controls are on the right. In the control window header the Input 1 /
Input 2 toggle button allows you to switch between two entirely separate I/O box input ports which may be patched to the
currently accessed path. The tone switch toggles tone on and off to the channel.

I/O Box Input Port

Controls and information fields on the left of the Input window relate to the physical I/O box input port; at the top, the
port's native/user label is displayed. The rotary control and switches control mic/line gain and phantom power
settings for the connected physical input port.
If the port is shared with other Hydra2 network users this will be indicated, as shown in the image below, with a padlock icon
along with a list of all network users who are sharing the port. The
altering shared port controls, see

The Channel Input

The channel input controls on the right of the screen control the DSP settings within the Summa processing core for the
currently accessed path:
• Input Trim increases or reduces the level of the incoming signal between -24 dB and +24 dB.
• There are polarity invert switches for each leg of the path.
• If a stereo path is accessed, a middle and side (M/S) decoder will be available. Switching this on automatically
treats the incoming stereo signal as a middle and side microphone array.
• Input balance allows you to alter the weighting of the stereo signal between the left and right legs of the path.
• Path leg routing options L TO LR and R TO LR allow you to route the left or right legs to both sides of a stereo
channel. With both switches in the off position the left signal feeds the left leg and the right signal feeds the
right leg of the stereo path, this is a 'normal' stereo setup. Switching L TO LR to the on position feeds the
left signal to both left and right sides of the stereo path, and switching on R TO LR feeds the right portion of
the signal to both left and right sides of the stereo path. Switching both switches on sums the left and right
portions of the signal together and outputs this on both the left and right legs. With both switches in the same
position, either on or off, you have access to the input balance control. When they are both off the balance
control responds as described above but with both controls switched on the it is a full range balance control
i.e turning the dial all the way to the left just outputs the 0 dB left hand signal from the left leg of the path.
With either L TO LR or R TO LR switched on independently, the balance control is unavailable—it would have
no effect as the left and right portions of the signal would be the same.
86 SUMMA
Networked Audio Production System
"Source and Destination Protection" on page 89
ENABLE TEMPORARY CONTROL button is used when
for more information.
GETTING SIGNALS IN AND OUT