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• Word clock input.
• Balanced digital input.
• Balanced digital output.
• Balanced analogue inputs with selectable
line/microphone gain settings.
• Balanced analogue outputs.
• Parallel remote input.
In today's digital studio environment, it is becoming more
and more important to be able to lock/synchronise all
digital equipment to a common sampling frequency or
house clock. The effects of 'unlocked' equipment are all
too noticeable as signal degradation, crackles and pops
as machines 'clock' at different rates.
The CDR830 PLUS automatically detects whether there
is a valid word clock signal connected to its word clock
BNC input connector and if so, routes all digital outputs
via a sample rate converter that is 'locked' to the same
sampling frequency as the word clock input signal. If no
valid word clock is detected at the input, then digital out-
puts will be clocked out at the 830's internal clock sam-
pling frequency of 44.1khz.
Note: When locked to an external word clock source,
the digital outputs do not transmit p/q sub-code infor-
mation.
The balanced digital input is compatible with both con-
sumer and professional interface protocols. It has the
electrical characteristics of a professional balanced
interface (110 ohms input impedance).
In order to select the balanced digital input as source,
perform the following:
1. Set the rear panel switch labelled SW2 to position
1. 'BAL'
2. Use the front panel INPUT SELECTOR to select
COAXIAL.
The balanced digital output has the electrical character-
istics of a professional balanced interface, the format
characteristics of a consumer interface and is always
active.
It is possible to record balanced line or microphone level
analogue inputs.
In order to select a line level balanced analogue input as
source, set the rear panel switch labelled SW1 to posi-
tion 2. 'BAL +4'. Use the front panel INPUT SELECTOR
to select ANALOG.
In order to select a mono or stereo microphone as
source, set the rear panel switch labelled SW1 to posi-
tion 3. 'BAL -60'. Use the front panel INPUT SELECTOR
to select ANALOG.
The balanced analogue outputs have an output level of
+18dBu for 0dBFS.
By connecting the circuit shown below, remote control
operation of this unit is possible with external switches.
The parallel remote control has priority over the wireless
remote control. When the same buttons are pressed at
the same time on both units, operation with the parallel
remote control will have priority.
Thank you for purchasing the HHB CDR830PLUS. This supplement is intended to provide the user with the
additional information required to operate the CDR830PLUS and is to be used in conjunction with the stan-
dard Operating Instructions of the CDR830. We recommend that you read this manual first before you start
using the CDR830PLUS. We also recommend that you keep this manual in a safe place for easy access in the
future.
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SUPPLEMENT
HHB CDR830PLUS Compact Disc Recorder
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BALANCED ANALOGUE OUTPUTS
ADDITIONAL FEATURES
WORD CLOCK INPUT
BALANCED DIGITAL INPUT
BALANCED DIGITAL OUTPUT
BALANCED ANALOGUE INPUTS
PARALLEL REMOTE INPUT (DIN 8-pin)
Balanced Digital Output
Impedance .....................................................110 ohms
Amplitude..............................................4Vp-p 100 ohms load
Balanced Digital Input
Impedance.....................................................110 ohms
Word Clock Input
Operating Frequency...........................................32kHz to 48kHz
Balanced Analogue Inputs (LINE; +4)
Level required for 0dBFS (gain @max)...............................+5dBu +/- 1dB
Frequency response.......................................10hz to 20khz +/-1dB
THD+N.........................................................<0.01%
Balanced Analogue Inputs (MIC; -60)
Level required for 0dBFS (gain @max)..............................-57dBu +/- 1dB
Frequency response.......................................20hz to 20khz +/-2dB
MIC EIN.......................................... -119dB 'A' Weighted +/-1dB
THD+N..........................................................<0.1%
Unbalanced Analogue Inputs (LINE; -8)
Level required for 0dBFS (gain @max). . .............................-8dBu +/- 1dB
Balanced Analogue Outputs
0dBFS gives +18dBu into a 10k load.
Unbalanced Analogue Outputs
0dBFS gives +8dBu into a 10k load.
NOTE: The specifications and design of this product are subject
to change without notice, due to improvements.
Published by HHB Communications Ltd.
Copyright © 2002 HHB Communications Ltd.
All rights reserved.
TECHNICAL DATA
HHB CDR830PLUS Compact Disc Recorder