HHB comm CDR-882 - Manual (Page 49)

Advanced Features & Operation
CDR-882 User Manual Version 1.0 www.hhb.co.uk
Erasing/Initialising a single
CD-RW
Insert the CD-RW into a drive, and if necessary, select the drive
with the DRIVE SELECT button. When the drive has completed
the reading process and the track information is displayed,
press the ERASE button. The display will change to
Erase nn-nn (where nn is the total number of tracks on the
disc).
This first erase option is to erase only the last track on the disc.
The remaining erase options may be viewed by rotating the AMS
control clockwise, one click at a time. Each click decrements the
first of the two numbers by one. Thus if there are 5 tracks on
the disc, the initial display will be:
Erase 05-05
and then, in turn:
Erase 04-05, Erase 03-05, Erase 02-05, Erase Disc, Init Disc
(after which Erase 05-05 is displayed again.)
Erase Disc means that all the tracks on the disc will be erased;
Init Disc means that the disc will be completely re-initialised.
When the required selection of tracks to be erased, or the
full erasure option is displayed, the erase process is initiated
by pressing ENTER (the AMS control). Alternatively, the erase
function may be aborted by pressing ERASE a second time.
As erasure commences, the display will show:
Erase 0%
and the percentage indication will then show the progress.
As stated above, initialisation is a much slower process than
track erasure. After erasure/initialisation is complete, the
drive returns to STOP, and the number of tracks remaining is
confirmed by the display.
Erasing/Initialising two CD-RWs
If both drives contain CD-RWs, the user has the option to
erase selected tracks from in each in turn as described above,
switching between drives with DRIVE SELECT. However, the
range of erase options offered is extended to include erasing or
initialising on both drives simultaneously.
Rotating the AMS control one click clockwise past Init Disc will
offer the options
Erase Discs
followed by
Init Discs
Selecting one of these options (by pressing ENTER) will initiate
erasure or initialisation on discs in both drives simultaneously.
SCMS
The SCMS (Serial Copy Management System) was developed
to restrict the number of copies which could be made from a
digital recording via the digital domain. The system has been
incorporated into all consumer digital audio equipment for many
years. With commercially-produced CDs, it limits the number of
copies which can be made by using an S/PDIF interconnection
to one.
In the simplest terms, SCMS functions by setting certain bits
in the digital bitstream. These are inspected by an SCMS-
equipped recorder and a recording is only permitted if the “first-
generation-only” criterion is met.
The restrictions imposed by SCMS are generally too limiting
for professional use. As a professional product, the CDR-882
provides full control over SCMS operation in two ways.
Firstly, the digital input bitstream is not checked for copy
protection bit validity. The CDR-882 will record from any digital
source. This applies to all digital inputs.
Secondly, the copy protection bits can be set as required
for the discs being recorded. This setting is made via the
Record submenu of the menu system, at the SCMS option.
Three settings are available: Prohibit Copies, Copy Once and
Permit Copies, corresponding to none, one or unlimited copies
respectively. (See page 35 for full details.)
Discs recorded in the CDR-882 subsequently played on
consumer CD players will cause the copy protection bits at the
S/PDIF outputs of those players to be set according to how the
SCMS menu setting on the CDR-882 was set at the time the
discs were recorded. The source of the programme material
at the time of recording is of no relevance; this includes discs
recorded using the CDR-882’s high-speed DISC COPY function.
The CDR-882 is SCMS-compliant in playback; the SCMS bits in
the digital outputs are set only according to the copy protection
status of the disc being played.