Sound Devices 788T - Manual (Page 36)

Input Type
Select between Mic, Line, or Digital inputs using the MENU key while in the Input Settings Window.
Input Type Input Connectors Gain Range (Trim only)
Mic XLR 1-4, TA3 5-8 Off (-infinity) 0 dB to 76 dB
Line XLR 1-4, TA3 5-8 Off (-infinity) -25 dB to 50 dB
Digital AES3 1-8 (D-Sub 15) Off (-infinity) -25 dB to 76 dB.
Phantom Power
Phantom power (48 volts) can be activated individually, for each analog input on. Phantom power
can be used for both mic- and line-level inputs. Enable or disable Phantom Power in the Input Set-
tings Window using the Tone key to select 48V (phantom power for mic level only), 48VL (phantom
power for mic- and line-level), or Off.
Using line-level inputs with microphones is useful in high SPL environments such as recording fi rearms
or loud concerts. Make certain to disable phantom power on inputs with attachedc line-level output de-
vices that might be susceptible to damage from DC.
High-Pass Filters
High-pass fi lters on analog and digital inputs reduce sensitivity to low frequency signals. Pressing
the Rotary Switch will engage or disengage the High-Pass Filter. Turn the Rotary Switch to select the
cut off frequency in 10 Hz steps from 40 Hz to 320 Hz.
If the Setup Menu option INPUT: FRONT PANEL CONTROLS is set to Fader Controls, pressing the
Rotary Switch will toggle between Trim and High-Pass Filter control.
Filter slopes of 6 dB and 12 dB per octave are selectable in the Setup Menu and will apply to all inputs
where the high-pass fi lter have been engaged.
Input Gain
The gain display will toggle between trim and fader levels (if applicable). If the Setup Menu op-
tion INPUT: FRONT PANEL CONTROLS is set to Fader Controls or Input Enables Only, pressing the
Rotary Switch will toggle between Trim and High-Pass Filter control. When Trim is selected, turn the
Rotary Switch to adjust the trim level.
Input Limiters
Analog inputs incorporate an advanced, analog/DSP-controlled hybrid limiter to prevent input
overload. In normal operation and with proper gain settings, the limiters should rarely engage.
When activated, these limiters prevent unusually high input signal levels from clipping the analog
input stage of the preamp.
The 788T is equipped with 16 Input Limiters, a pre-fade and a post-fade limiter for each input. Limit-
ing is applied only at the stage of the signal path where the level exceeds the set Limiter Threshold.
If the threshold is exceeded at both pre- and post-fade stages, each limiter will act independently of
one another.
788T/788T-SSD User Guide and Technical Information
28
v. 3.02 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
Inputs and Outputs
3