Merging Hapi MKII, User Manual

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HAPI MKII User Manual
PreAmp Menu
The PREAMP (A/D) menu becomes active if you have 1 or more AD8(P) modules installed in the Hapi
unit, giving full access to the Input controls. Please see below for a description of the buttons available.
All Active: Will select all 8 input channels for function and level grouping
Inactive: Adjustments to the input settings and level affect only the selected
channel only
Note the All button will group all inputs of the same type (Mic or Line)
Gain slider
The Rotary Control will give the user control over the Gain level with
increments/decrements in 0.5 dB steps
The Gain range goes from 0 dB to +66.0 dB from left to right
In Mic mode (M): Sets the Mic
Preamplifier’s Gain
In Line mode (L): Sets the Line Input Sensitivity
A value of 0dB corresponds to an input sensitivity of +24dBu for 0dBFS. This
corresponds to a calibration level of +4dBu for -20dBFS.
A value of +20.0 dB corresponds to an input sensitivity of +4dBu for 0dBFS
A value of +66.0 dB corresponds to an input sensitivity of -42.0dBu for 0dBFS
Example: Assuming you want to interconnect to an analog console and your
standard studio alignment level is +4dBu for -18dBFS. In this case set the gain
slider to +2dB. Similarly, on the DA analog output side, set the attenuation to -
2dB, refer to section Line Output Level calibration on page 22, provided the
max output level is set to +24dBu.
Mic (M) or Line (L) 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 by 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 + 66 dB, means 0 dBFS for -42 dBu Analog signal level present
at the Line input
Note #1: the MIC and Line inputs are stored as independent parameters,
meaning that switching from Mic to Line and vice versa will load its own gain
(sensitivity) value
Note #2: The Premium AD converters have been designed in order to be able
to benefit from the +3.1 dB SA-CD headroom offered by DSD, as per the
scarlet book standard.
The gain range goes from +0dB to +66dB in both PCM