User manual

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Horus User Manual
Gain Slider The + or - buttons give increments/decrements in 0.5 dB steps
Slider range goes from 0 dB to +60.0 dB from left to right
In Mic mode: Sets the Mic Preamplifier’s Gain
In Line mode: Sets the Line Input Sensitivity
A value of 0dB corresponds to an input sensitivity of +24dBu for 0dBFS
A value of +20.0 dB corresponds to an input sensitivity of +4dBu for 0dBFS
A value of +60.0 dB corresponds to an input sensitivity of -36.0 dBu for 0dBFS
Mic or Line Switches the Input from the Mic-Pre amplifier to the Line level circuitry. The
button will show the current input signal path it is set for (Mic or Line).
The Line input sensitivity can be adjusted be setting the line gain for each input
of the AD module.
Line Fader of 0 dB, means 0 dBFS for +24 dBu Analog signal level present at
the Line input
Line Fader of + 6 dB, means 0 dBFS for +18 dBu Analog signal level present at
the Line input
Line Fader of + 20 dB, means 0 dBFS for +4 dBu Analog signal level present at
the Line input
Line Fader of + 60 dB, means 0 dBFS for -36 dBu Analog signal level present
at the Line input
Note: the MIC and Line inputs are not coupled, meaning that switching from
Mic to Line and vice versa will load its own gain (sensitivity) value
48V This button will turn on 48V phantom power for the channel. If it is lit, it means
that Phantom power is active. Only active on channels set to Mic.
This warning applies ONLY to the initial RUN 3 production batch of AD8 and
AD8P and has been fixed for all modules shipped starting November 2012:
The 48V power MUST be turned off prior to changing the connection in certain
patch bays. Many such patch bays do short the Hot, Cold or both signals to
Ground during insertion or removal of the Jacks with the risk of deteriorating
permanently the protective resistors in the input of the PreAmp circuitry. If an
AD module input circuitry is damaged, following such a short, it will end up
permanently having inaccurate gain levels, distortion or even no signal at all on
some channels. That would require hardware replacements at your own cost,
since such damage is not covered by our warranty.
If you still own one of the original and unmodified RUN 3 AD8/AD8P modules
we recommend that you contact your Merging reseller to organize an update of
your module(s), which Merging is pleased to provide free of charge.
PAD A -10 dB Pad can be applied inserted in the Mic Preamp circuitry.
Ø Phase invert button. When lit, it inverts the polarity of the selected input signal.
80 Hz Low cut filter 80 Hz. Second order, 12 dB/octave.
Meters dB scaling The Meters scaling is displaying from -90 dBFS to 0 dBFS.
Meters color range Refer to the Meters Page Settings, in order to adjust the Level meter color
range (Peak, Alignment and Decay time).
Rst Stands for Reset Peaks Hold Meters. The top Red led of the PreAmp metering
will indicate that a Peak has occurred. In order to clear the Peak display, simply
press the RST button. This is useful if you have enabled the Peak Hold option
under the Meters menu Settings
Navigation Use the left << and right >> arrows in order to navigate through the banks of 8
inputs. Will be active if more than one AD8(P) module is present in the unit.