Operation Manual

Using 518 for Mastering and Multimedia 33
518 User Guide
Memory
In Mastering Processor mode, 518 maintains a continuous memory of the
DSP, Dither, Gain, In and Out settings for each source.
So, if you had determined that, e.g. D1 is an 18 bit source that should
always use Gain 0dB but that D2 is 16 bit and can always use Emphasis
and +2dB, then 518 will remember these and automatically reconfigure
itself for each source as you switch between them.
DSP
1. Press DSP to select the primary processing mode.
The display will show:
Bypass 0
Bypass transmits all 24 bits on the input to the output without any
processing.
Note When Bypass is chosen, all the other front panel keys are disabled.
1. Press DSP again.
The display will show:
Gain 0
Gain has a flat frequency response, but the level of the signal level is
adjusted using a precision dithered multiplication. All the front panel
keys are available to specify processing.
1. Press DSP again.
The display will show:
Emph 0
Emphasis ensures that the output of 518 is always pre-emphasised
according to the 50/15µs CD standard. 518 uses precision DSP to pre-
emphasis the signal providing the incoming signal is not already pre-
emphasised. If the incoming signal is pre-emphasised the red Emph
light indicates this.
or:
De-Emph 0
De-Emph provides the CD de-emphasis function to very high precision
– providing the incoming signal is emphasised (Emph light on).
Note Gain functions in Emphasis and De-Emphasis, and all the front
panel keys are available to specify processing.
Display
1. Press Display key to select between the following display formats
Emph +2
Pre-emphasis option and gain setting, or
ShpB +2
Dither mode and gain setting, or
CD +2
Source and gain setting, or