Sound Devices 788T - Manual (Page 38)

Analog Inputs
Analog inputs 1-4 on XLR connectors and analog inputs 5-8 on TA3 connectors, are the primary con-
nections into the recorder. These inputs accept balanced or unbalanced mic- or line-level inputs. Gain
is controlled by the front panel Input Gain Pots.
Input Linking (Stereo or MS Decoding)
Inputs 1-8 can be grouped or linked together to ensure that gain is applied evenly across all linked
inputs. Linked inputs can also be muted and un-routed from tracks by using a single Input Trim Pot.
Input settings such as Input type, Limiter, Phantom Power, and High-Pass Filters are also linked and
will be applied across all linked inputs.
Neighboring inputs can be linked as stereo pairs in the following sequences: 1-2, 3-4, 5-6, and 7-8.
When linked, the odd Input’s trim controls the signal level of linked inputs, and the even Input’s
trim controls the left-to-right balance of the stereo pair.
When linked, the Input Selector Switch will solo the linked pair in the headphone monitor. For
example if Input 1 and Input 2 are linked as a stereo pair, pushing the Input Solo Switch will change
the headphone monitor to 1,2 (Input 1 on the left-side and Input 2 on the right-side of the headphone
monitor).
When a CL-8 is attached or the Setup Menu option INPUT: FRONT PANEL CONTROLS is set to Fader
Controls, the odd Fader will control the post fade signal level of the linked pair and the even fader
will be disabled.
MS Linking
Mid-side (MS) matrixing is a method for processing audio signal from a cardioid microphone and a
bidirectional microphone into a stereo signal. The cardioid microphone is the “mid” signal and con-
nects to input 1, and the bidirectional microphone is the “side” signal and connects to input 2. The
cardioid microphone is pointed at the sound source, and the bidirectional microphone is oriented
sideways (positioned with its capsule as near as possible to the cardioid microphone’s capsule). the
following diagram shows the relative polar patterns of microphones in an M/S confi guration.
Mid Signal
Side Signal
When set to link as an MS pair, the inputs are decoded as MS stereo, where the gain and balance for
the pair work the same as stereo linking above. The odd input is for Mid signal and the even input is
for Side signal.
By default MS decoded signal from MS linked inputs will go to all tracks, pre- and post-fade. Chang-
ing Setup Menu option Input: MS to Pre-Fade ISO to Off, will cause signal from MS linked inputs
that is routed to any ISO tracks (A through H) pre-fade, to be discrete mid and side signal (bypassing
the MS decoder). Signal from MS linked inputs routed anywhere else will be MS decoded (including
post-fade routings to ISO tracks).
788T/788T-SSD User Guide and Technical Information
30
v. 3.02 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
Inputs and Outputs
3