HHB CDR850 Plus Manuel utilisateur
IMPORTANT OPERATIONAL CONSIDERATIONS
1
)
The CD standard utilises a 44.1KHz samplin
g
s
y
stem, therefore use a 44.1KHz +/- 1000ppm external
clock source for correct operation. If, for example a clock fre
q
uenc
y
hi
g
her than 44.1K is used, the
HHB CDR850 PLUS
PROFESSIONAL CD-R/CD-RW RECORDER
Operating Instructions
Supplement
interstage
Phistersvej 31, 2900 Hellerup, Danmark
Telefon 3946 0000, fax 3946 0040
www.interstage.dk
-pro audio with a smile
HHB CDR850 PLUS
This supplement is intended to provide the user with the additional information required to operate the
CDR850PLUS and is to be used in conjunction with the standard Operating Instructions of the CDR850.
Thank
y
ou for purchasin
g
the CDR850 PLUS. The PLUS provides the user with the abilit
y
to lock the
machine’s master clock to a variet
y
of external 44.1KHz clock sources includin
g
wordclock. In addition, a
balanced di
g
ital output is featured, allowin
g
the
g
reater cable len
g
ths necessar
y
in lar
g
e installations
without the inherent signal degradation.
EXTERNAL SYNCHRONISATION
In toda
y
’s di
g
ital studio environment, it is becomin
g
more and more important to be able to
lock/s
y
nchronise all di
g
ital e
q
uipment to a common samplin
g
fre
q
uenc
y
or house clock. The effects of
‘unlocked’ e
q
uipment are all too noticeable as si
g
nal de
g
radation, crackles and pops as machines ‘clock’
at different rates.
The CDR850 PLUS can be set
(
via a 4-wa
y
dipswitch on the rear panel
)
to ‘lock’ to a number of different
clock sources as indicated in the following table:
Playback Clock Source
X= either ON or OFF ON = Switch down
An
y
combination of switch position that does not appear in the above table will result in the 850 PLUS
reverting to INTERNAL.
System Example:
CDR850 PLUS
DIGITAL
MIXING DESK
WORD CLOCK @ 44.1KHZ
SW1 SW2 SW3 SW4 Clock Source
ONXXXINTERNAL
OFF ON OFF OFF WORD CLOCK
OFF OFF OFF ON AES/EBU
OFF OFF ON ON SPDIF COAX
OFF OFF OFF OFF SPDIF OPT
SPDI COAX or BALANCED
DIGITAL OUT
IMPORTANT OPERATIONAL CONSIDERATIONS
1
)
The CD standard utilises a 44.1KHz samplin
g
s
y
stem, therefore use a 44.1KHz +/- 1000ppm external
clock source for correct operation. If, for example a clock fre
q
uenc
y
hi
g
her than 44.1K is used, the
playback speed and pitch will increase accordingly.
2) Changing the clock source during play or record may cause the CDR850 PLUS to not operate correctly.
If this occurs, reset the power to the machine. Set the clock source usin
g
the dip-switch selector
when in ‘STOP’ mode or when the machine is powered down.
3
)
The CDR850 PLUS is desi
g
ned so that the default clock source is ‘INTERNAL’ For example, if the
machine is set to lock to the word clock input and there is no word clock si
g
nal connected, then the
machine will revert to ‘INTERNAL’. This ensures that if a clock source input becomes intermittent, the
850 PLUS will always revert to its internal clock.
4
)
When recordin
g
from or monitorin
g
the di
g
ital input, the CDR850 PLUS outputs the clock contained
within that digital input i.e. the monitor signal bypasses the SRC as with a standard CDR850. However,
a word of caution - If the SRC is on
(
e.
g
. 48KHz input or SRC manuall
y
turned on in MENU
)
, then the
‘write’ data rate itself will utilise the clock pro
g
rammed b
y
the dip-switch selector. Ensure that this is
a 44.1KHz clock. The CDR850PLUS will flash ‘CHECK’ in the displa
y
if an out of spec. clock is used
during recording.
5
)
When recordin
g
or monitorin
g
the analo
g
ue input, the CDR850 PLUS locks to the clock source set b
y
the 4-wa
y
dip-switch as it does in pla
y
back mode. NOTE -itis not possible to record analo
g
ue inputs
when the 850 PLUS is locked to any clock other than 44.1K +/-1000ppm asthis is outside the Orange
Book specification. The CDR850PLUS will flash ‘CHECK’ in the displa
y
if an out of spec. clock is used
during recording.
BALANCED DIGITAL OUTPUT
This output has all the electrical characteristics of the AES/EBU digital audio interface i.e. 110Ω, 5Vp-p,
balanced line and therefore can be connected to AES/EBU type inputs. The male XLR is wired pin1-
g
round; pin 2-hot; pin 3-cold. The format of the data follows the SP/DIF protocol i.e. transmits sub-code
data such as start ‘ID’,CD ‘Q’ channel, SCMS etc.
SPECIFICATIONS
Balanced Digital Output:
Impedance 110Ω
Amplitude 5Vp-p
Format SP/DIF
Word Clock Input
Impedance 75Ω
Amplitude TTL levels
Operating Frequency 44.1KHz +/-1000ppm
AES/EBU, SP/DIF COAX/OPTICAL Clock Input
Operating Frequency 44.1KHz +/-1000ppm
HHB Communications Ltd• 73-75 Scrubs Lane • London NW10 6QU • Phone: 020 8962 5000 • Fax: 020 8962 5050 • e-mail sales@hhb.co.uk
HHB Communications USA LLC • 1410 Centinela Avenue • Los Angels • CA 90025-2501 • Phone: 310 319 1111 • Fax: 310 319 1311 • e-
mail:sales@hhbusa.com
HHB Communications Canada• 260 King Street East • Toronto • Ontario M5A 4L5• Phone: 416 867 9000 • Fax: 416 867 1080 • e-mail:
sales@hhbcanada.com
HHB On-line: http://www.hhb.co.uk
interstage
Phistersvej 31, 2900 Hellerup, Danmark
Telefon 3946 0000, fax 3946 0040
www.interstage.dk
-pro audio with a smile
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