NewTek TriCaster 300 - Manual (Page 50)

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After connecting audio sources to the input connectors (see also Section 3.4.1), the first thing to
do is set the correct Connection Type using the drop-down menu.
Select Mic for professional grade microphones or other low impedance connections, Mic +
Phantom for condenser microphones requiring supplementary power, Line for higher impedance
device connections (such as a CD player, computer audio output or VCR), and AES/EBU* or SDI
Embedded* as required to connect a digital audio source.
Note: Analog levels conform to SMPTE RP-155. The maximum input/output level is +24 dBu,
nominal input level +4 dBu (-20dBFS), and the sample rate is 96 kHz.
The Gain sliders next to the VU meters for Inputs 1-3 default to their lowest setting on first
launch. After adding audio sources, slowly bring these sliders up to pass their signals through the
system.
Figure 26
Hint: As for most numeric controls in TriCaster, Shift + double-click control knobs to reset them to
their default (0dB for Gain sliders).
Some variation exists as respects the signal levels of low impedance sources. For Mic (and Mic +
Phantom) connection types, the Trim controls (Figure 26) provide a preliminary adjustment to
allow you to match the input level. Use Trim to bring the levels for microphone and similar
sources into a useful range on the VU meter.
Note: In digital audio systems, signal levels that exceed allowable values are ‘clipped’ (uniformly
assigned the maximum level value), inevitably entailing audible issues. TriCaster will clip at +6dB
and above. To be safe, keep signals at or below 0dB, using the 6dB above only as headroom for
occasional peaks. Use Trim and Gain judiciously to ensure strong signal levels without over-
modulation, and never exceed +6dB.