Overview of 518 | 7 |
|
|
Planning setup of 518
Firstly, the 518 is a product for enthusiasts! We designed it for audio and multimedia enthusiasts, keen listeners and those with enthusiasm for the best sound.
However, 518 is something of a chameleon. What do we mean by that? This is best explained by seeing what it does: 518 fulfils four very different functions in one box.
We have categorised uses (applications) of 518 into four broad headings, as follows:
∙A simple 'preamp' orControl Unit for a purist digital audio system. (Type 0) – see below.
∙A Resolution Enhancement processor in a
∙A Mastering Processor, used in any recording, editing, mastering or dubbing process. (Type 2) – see the overview on page 12.
∙A
What's inside a 518?
D1
D2
D3
Opt
RS232
| Input Switch |
|
|
|
|
|
|
|
| Twin PLL |
|
| 42MHz DSP |
|
| Digital Output |
| Out | |||||||||||||||||
|
|
|
|
|
|
|
|
|
| ||||||||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Front Panel |
|
|
|
|
|
|
|
| Control |
|
|
|
|
|
|
|
| |||||||||||||||||
|
|
|
|
|
|
|
| Computer |
|
|
|
|
|
|
|
| |||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Internal block diagram for 518
518 is a
Following the twin PLL is a fast (42MHz)
All software for 518 – control and DSP is held in a socketed EPROM. This allows the potential of upgrades or new applications being issued later.
Following the DSP is a multistandard digital output.
1For the technically interested, Figure 1 on page 49 shows the performance of the twin PLL.
518 User Guide