digital telephone hybrid product overview

digital telephone hybrid product overview
 DIGITAL TELEPHONE HYBRID
PRODUCT OVERVIEW
With the variety of phone systems in the
world today, it is becoming increasingly
difficult to have all callers sound the
same on-air. To help bring uniformity and
high quality sound to a broadcast talk
show environment, we have created the
DH30. The DH30 provides a high quality
interface between a standard telephone
line and your audio equipment.
Designed with both AES/EBU and ana-
log inputs and outputs, the DH30 can
interface with the latest digital and
analog consoles. To ensure quality sound
in studios that have open speakers and
microphones, the DH30 was created with
an acoustic echo-cancellation feature.
The DH30's digital signal processing
(DSP) has multiple adjustable
parameters to provide you with the best
send and caller audio signals. New audio
processing features such as the
compressor and downward expander
Typical DH30 Digital Console Installation
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=Console Out ==
functions ensure that the best audio
reaches your audience. All audio
processing features are programmable via
the front panel controls. For the deepest,
most-reliable hybrid null, and the best
quality caller audio for your application,
DH30 is the answer.
Easy to use and install, the DH30 has
simple front-panel controls and remote
control capability. These controls put the
ON, OFF, REC, and CUE functions right
at your fingertips. The DH30 also includes
a 2 Watt monitor amp with volume
controls right on the front panel. The REC
function sends a start/stop signal to your
external recording device. The CUE
function allows you to control which
audio signal should be sent to the caller,
allowing you to switch from the Send
input to the Cue input at the touch of a
button.
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FEATURES/BENEFITS
Bm Remote controllable presets
mM Password protected
Bm 24-bit digital signal processing (DSP)
mu AES/EBU digital or analog audio
input and output
Bm Record and Cue functions
Bm Selectable auto mix-minus
m Selectable acoustic echo cancellation
Bm Selectable auto answer and disconnect
M Integrated monitor amp with front-
panel volume control
HB Remote control via contact closures or
RS232
Bm Adjustable caller control (ducking)
Bm Adjustable three-band equalizer
@ Adjustable compressor and expander
Wm Bass boost
Bm Microphone send and cue preamps
@ Automatically accepts all worldwide
voltages
M Three selectable presets for cus-
tomized audio
EM Worldwide compliant including FCC,
CSA, CE, CTR 21
Vortex Communications Ltd. TEL: +44 (0)20 8579 2743 FAX: +44 (0)20 8840 0018
DIGITAL TELEPHONE HYBRID
SPECIFICATIONS
DIMENSIONS
17.125"/43.5cm W x 1.75"/4.44cm H x
10.125"/25.7cm D
Rack mount included for installation in a
19" rack
WEIGHT
6.71bs/3.04kg (dry)
11.21bs/5.08kg (shipping)
OPERATING TEMPERATURE
32-100°F/0-38°C
HUMIDITY
0-80%
FRONT PANEL CONTROLS
LCD programming display, ENTER/ESC/
AV programming buttons, monitor
volume control, send-level LED bar
meter, caller-level LED bar meter, record,
cue, hybrid ON/OFF, buttons with status
LEDs
REAR PANEL CONNECTORS
POWER: IEC Type
Auto adjusting, 100-240VAC, 2A,
50/60Hz, 30W
AES/EBU IN: XLR
pin 1=ground, pin 2=+phase, pin 3=
-phase; 32, 44.1, or 48kHz sample rate
AES/EBU OUT: XLR
pin 1=ground, pin 2=+phase, pin 3=
-phase; 32, 44.1, or 48kHz sample rate
RS232: DB9 female connector
9,600 baud rate, used for status and
control via a PC or other RS232
controller
RECORD CONTROL: DB9 female
Start, stop, and enable outputs are open
collector outputs rated at 40VDC and
50MA maximum
REMOTE: DB25 female
Remote Send input:
OdBu nominal, adjustable, unbalanced,
20kOhm impedance
Remote Caller and Aux outputs:
OdBu nominal, adjustable, unbalanced,
50 Ohm impedance
Control inputs:
Remotely activate any of the following
functions with a simple switch closure
to ground: ON, OFF, CUE, and REC
along with preset selection controls
1,2, and 3 or with Send, Caller, and
Monitor Mute controls
Status Outputs:
Remotely check the status of the
hybrid with the ON, OFF, CUE, REC,
Send Presence, and Caller Presence
status outputs. All status outputs are
open collector outputs rated at 40VDC
and 50mA maximum
MONITOR OUTPUT: 1/4" stereo jack
tip=+phase, ring=-phase sleeve=-phase;
2W output into an 8 Ohm load
SEND INPUT: XLR female
Mic/Line selectable, -55 or OdBu
nominal, adjustable, balanced bridging,
20kOhm impedance, selectable 12VDC
Phantom Power
CUE IN: XLR female
Mic/Line selectable, -55 or OdBu
nominal, adjustable, balanced bridging,
20kOhm impedance, selectable 12VDC
Phantom Power
CALLER OUTPUT: XLR male
OdBu nominal, adjustable, balanced
50 Ohm impedance
AUX OUTPUT: XLR male
OdBu nominal, adjustable, balanced
50 Ohm impedance
TELCO LINE: RJ11 connector
POTS (plain old telephone service) line
or analog extension from a PBX or dry
line (no DC offset voltage). A-Lead
supervision provided
TELCO SET: RJ11 connector
A-Lead supervision provided
Vortex Communications Ltd. TEL: +44 (0)20 8579 2743 FAX: +44 (0)20 8840 0018
©2002 Comrex Corporation
TELEPHONE TRANSMIT
All measurements referenced at -15dBm
level on the phone line
FREQUENCY RESPONSE:
+/- 1dB from 250Hz to 3.5kHz
SIGNAL TO NOISE:
>70dB
DISTORTION: <0.15%
TELEPHONE RECEIVE
All measurements referenced at -15dBm
level on the phone line with caller process-
ing options bypassed
FREQUENCY RESPONSE:
+/- 1dB from 250Hz to 3.5kHz
SIGNAL TO NOISE:
> 70dB
DISTORTION:
<0.1%
ECHO CANCELLATION/MIX-MINUS
TAIL TIME: 120 milliseconds
NULL: 50dB
TELCO CANCELLATION
TAIL TIME: 32 milliseconds
NULL: 55dB
APPROVALS:
X (€ Ре €
Mu rar Y
wa FA Ex 70.
Imported by Vortex Communications Ltd
75 The Grove, Ealing
LONDON W5 SLL. UK
Tel: +44 (0)20 8579 2743
Fax: +44 (0)20 8840 0018
E-mail: [email protected]
Web: www.vtx.co.uk
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