Specifications

Prism Media Products Limited AD-2 Dual-rate A/D converter

Operation Manual

Issue 0.2 © Prism Media Products Limited

11 August 1998 Page 17 of 58

3.6. Can the AD-2 convert up to 96kHz from 44.1kHz?

Yes. Use D-D Factory Preset Store 1 as a base. (Store 2 will be less useful as it

specifies 2-wire input and this would need to be changed.)

Press <D-D Modes>, <Factory Presets> and then <1>. Press [Enter] to load the

store.

See section 2.4 for details of D-D Factory Preset stores.

Now change the output sample rate from the preset 44.1kHz to 96 or 88.2kHz.

Press [99] until Main O/P Setup is displayed, then [Enter]. Use the [77] and [66] keys

to select the desired high sampling rate, followed by [Enter] to confirm the selection.

The AD-2 is now ready to up-convert using AES3 input on input XLR1 and generating

1-wire (2x speed) output on XLR1 and XLR2.

3.7. How do I change the synchronization to AES3?

This can be set starting from any of the A-D mode Factory Presets by using the Menu

controls. Start using the [99] control to locate the D-D Mode Setup sub-menu. Press

[Enter] and then use the [77] and [66] keys to select XLR1 or XLR2. Confirm the

selection with [Enter].

You may like to save this in a user store. See section 4.5.2 for details.

The AD-2 can accept sync at a frequency which differs from its outputs. For more

information about the highly flexible synchronization modes of the AD-2, see section

3.8. What is DRE?

Dynamic Range Enhancement (DRE) is a process designed for the increasing the

dynamic range of 16-bit recording channels, such as DAT, CD-R, or 1630+U-matic,

when further post-processing is required. It requires an encode process on recording

and a decode process on playback. It is suitable for applications where 20-bit dynamic

performance is desired of the recorder but only a 16-bit recorder is available, and

where the requirement for a decode process is not a problem. The AD-2 Dual-rate A/D

converter can encode DRE signals from analogue or digital sources, and can also

decode them (in digital to digital mode) to transfer the high resolution signal, encoded

on a 16-bit tape, onto a 20 bit digital audio workstation. (The Prism Sound Dream DA-

2 can be used to provide analogue monitoring of the encoded signal.)