GSM HYBRID
MANUAL
v1.1
D&R Electronica B.V., Rijnkade 15B, 1382GS Weesp, The Netherlands
Phone: +31 (0)294-418014, Fax: +31 (0)294-416987, Website:
http://www.d-r.nl, E-Mail: info@d-r.nl
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Contents
1 BACKGROUND ............................................................................................................................................................ 4
1.1 W
HAT IS A TELEPHONE HYBRID
? .................................................................................................................................. 4
2 GENERAL DESCRIPTION ........................................................................................................................................... 5
2.1 F
RONT PANEL
........................................................................................................................................................... 5
2.2 R
EAR PANEL
............................................................................................................................................................. 5
2.3 I
NPUTS AND OUTPUTS
................................................................................................................................................ 6
3 SOFTWARE .................................................................................................................................................................. 7
3.1 I
NSTALLATION
.......................................................................................................................................................... 8
3.2 F
EATURES
.............................................................................................................................................................. 12
3.3 S
ETTINGS
............................................................................................................................................................... 15
4 GETTING STARTED .................................................................................................................................................. 16
4.1 H
ARDWARE SETUP
.................................................................................................................................................. 16
4.2 M
AKING CALLS
....................................................................................................................................................... 17
4.3 R
ECEIVING CALLS
.................................................................................................................................................... 17
5 SPECIFICATIONS ...................................................................................................................................................... 18
5.1 A
UDIO INPUT
(SEND).............................................................................................................................................. 18
5.2 A
UDIO OUTPUT
(RECEIVE) ..................................................................................................................................... 18
5.3 G
ENERAL
............................................................................................................................................................... 18
6 DIMENSIONS ............................................................................................................................................................. 19
7 SUMMARY ................................................................................................................................................................. 19
8 ELECTROMAGNETIC COMPATIBILITY ................................................................................................................ 20
9 DECLARATION OF CONFORMITY .......................................................................................................................... 20
10 PRODUCT SAFETY ................................................................................................................................................ 21
11 CAUTION ................................................................................................................................................................ 21
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Dear Client,
Thank you for choosing the D&R GSM Hybrid.
This time you are not faced with a huge manual because it is simply not necessary because of the natural recognition of
all functions on the user interface. All functions are self-explanatory and you will certainly appreciate the ergonomics of
this design.
We are confident that you will be using the GSM Hybrid for many years to come, and wish you a lot of success with
your operation.
With kind regards,
Duco de Rijk
MD
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1 BACKGROUND
D&R’s newest Telephone Hybrid is a half rack GSM version in the range of Telephone Hybrids. Its concept originates from many
demands for a wireless version of our well known and used wired hybrids. The GSM-Hybrid is a design that makes use of the
latest analogue and digital techniques available.
1.1 What is a telephone hybrid?
Telephone hybrids provide the interface between professional audio equipment and the public telephone network. They
provide protection for your equipment and the public telephone lines, allowing for varying line signals and line and GSM
conditions. Automatically canceling out the unwanted signal they also facilitate two-way communication down a single
telephone connection.
With the D&R GSM Hybrid you can add a simple and effective wireless interface that your reporters can call. With features like
HD voice, Echo canceling, digital EQ and application control over USB on your PC it is a nice tool to expand the communication
possibilities of your studio with your reporters in the field.
The GSM Hybrid has its own number reporters directly can dial, the call can be taken on the mixing console due to built in
GPIO’s. The electronics are housed in a sturdy metal 9.5” rack mount case with antenna’s on the front side for optimum
receiver conditions. An external 12 volt power supply adapter is part of the delivery. Software features are in and output
metering and level control, phone dialing, number recognition and GSM signal strength indication
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2 GENERAL DESCRIPTION
A large ring button enables you to pick up the line from the unit itself or from your mixer when it is connected via its GPI to the
telephone Hybrid. When a call comes in it lights up green in the rhythm of the ring. When the line is picked up by pushing the
button it turns into red. When it is off the connection is lost. Both levels of receive and send can be adjusted to suit your
requirements in the mixer.
FEATURES SOFTWARE
• HD-Voice (AMR-WB/G722.2)
• Balanced Audio in/Out
• Echo cancelling
• PC control application via USB
• Input and output level meters (ppm)
• Input and output gain adjust
• Phone dialing
• Number recognition
• GSM signal strength indicator (RSSI)
2.1 Front panel
Antenna Both antenna's assure you of an uninterrupted connection with the nearest GSM tower.
SIM Card In this slot you insert a mini sim card available from your favorite provider
CONNECT BUTTON:
(RING)
Connect switch to connect and disconnect calls from the GSM network.
It can be remotely driven by connecting a switch to the GPI Jack on the backpanel.
2.2 Rear panel
Power The unit is powered by an External 12 volt 1A adapter.
USB
This USB connector is connected to the PC to be able to perform call operations and
configuring the device.
RECEIVE
This male XLR connector outputs the received signal from the caller and needs to be
connected to a line input of a mixing console.
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SEND
This female XLR connector receives the audio coming from a mixing console (Mix/Minus,
clean feed (N-1) or Aux) and is send to the caller.
GPO Jack connector for remote control of a phone signaling device such as D&R's Calllite
GPI Remote control of the Connect switch (Rink/Hook) on the frontpanel.
2.3 Inputs and Outputs
2.3.1 RECEIVE (from caller)
XLR MALE TYPE CONNECTION
Pin 1 Screen Audio ground
Pin 2 Phase Audio + (output)
Pin 3 Non-phase Audio – (output)
2.3.2 SEND (to caller)
XLR MALE TYPE CONNECTION
Pin 1 Screen Audio ground
Pin 2 Phase Audio + (output)
Pin 3 Non-phase Audio – (output)
2.3.3 GPIO
GPO FUNCTION CONNECTION
Tip Pull down 47 ohm to ground
Ring Pull up +5 volt via 10kohm
Sleeve No Not connected
GPI FUNCTION CONNECTION
Tip Pull down 47 ohm to ground
Ring Pull up +5 volt via 10kohm
Sleeve No Not connected
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3 SOFTWARE
GSM Hybrid Control is an application required to configure and control the GSM Hybrid. Input and output
levels can be configured in the Settings menu. Making a call can be done with the dialpad window.
The application is also an indicator for SIM card status, call status and input and output level (PPM) meters.
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