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 15 of 58
3. FREQUENTLY-ASKED QUESTIONS (FAQs)
This section provides several ‘how to ....’ answers in response to a range of frequently-
asked questions.
3.1. What do the flashing !!! Characters mean in the display?
These indicate a warning condition and further explanation can be seen by pressing
[66].
A common display is
Warnings: [Lvl]
*Bad External DI
This means that a Digital Input (DI) signal is expected but not present or is incorrect..
In the default state of the AD-2, if an external Wordclock is not connected, this warning
is shown accompanied by a solid ON “Local” LED and a flashing “WCK” LED.
If this display appears at other times, use the [66] key to investigate. See Section 4.6.
3.2. Can I assign the Aux output to one of the XLR connectors?
Yes, but take care not to confuse the functions of XLR 1 & 2 if you assign them
separately with Main and Aux generating different audio formats.
3.3. How can I enable headroom setting by the stores?
The AD-2 allows you to set the input level at which digital full-scale (0dBFS) is reached
using the 0dBFS: setting in the A-D Mode Setup sub-menu. The headroom limit
can be considered as being the same as the maximum input level. Clipping will occur
cleanly at this point. Then use the [99] key to get to the Preferences Menu. Press
[Enter]. Press [99] repeatedly until Load A-D Gains:N is displayed. Then use the
[66] key to change the setting to Yes and finally Press [Enter].
Once you have done this, any future store save and load operations will respectively set
and restore the store’s maximum input level (line-up) setting.
USE THIS WITH GREAT CARE!