STEREO CODERS

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LINEAR stereo coders are equipments designed to offer advanced stereophonic sound systems, with exceptional performances, for broadcasting use. They are developed for a very simple and fast integration in existing LINEAR transmitting systems.
Three different standards stereo coders are available:
1.     BTSC (MTS): is necessary to generate the stereo audio carrier according to NTSC standard. The
system requires only an external composite video sync reference for locking composite audio carrier. It is equipped in a 10TE plug-in module to be easily allocated in the transmitter EX series.
On request, it could be based in 1HE rack cabinet.
2.     A2 STEREO (common called European): can operate as stereo or dual sound. It is built in a 10TE
plug-in module to be friendly integrated in the transmitter EX series or allocated in 1HE cabinet, on request.
3.     NICAM:  engineered for the professional coding of audio signals to the digital NICAM 728 TV stereo
sound signals. The IF output signal is combined with the IF coming from a TV analog modulator. It is assembled in 1HE cabinet . 

 

 

  ORDERING INFORMATION
MODEL
STANDARD
CASE
ES-BT
BTSC (MTS)
10 TE plug-in
ES-BT/1
1 HE stand alone
ES-EU
A2 STEREO (EUROPEAN)
10 TE plug-in
ES-EU/1
1 HE stand alone
ES-N
NICAM
1 HE stand alone

 

                                                                  STEREO CODERS ES SERIES
                                                    (specification subject to change without any notice)
 
BTSC / MTS STEREO
Input connectors
2 x mini XLR (Cannon)
Input level
-12 to 6 dBm
Input impedance
600 Ohm or High impedance, selectable
Output connector
SMB male
Separation 500 Hz – 5 KHz (-10 dB in level)
35 dB typical
Common mode rejection ratio
> 40 dB
Frequency response
+/- 0.4 dB from 30 Hz to 15 KHz
(referred at 50 Hz with pre-emphasis and
de-emphasis)
Distortion
< 0.3 % at 50 KHz of peak deviation
(with pre-emphasis and de-emphasis from
30 Hz to 15 KHz)
Signal to noise (not weighted)
> 65 dB respect to 50 KHz of deviation
L – R carrier suppression
> 40 dB
GENERAL
 
Power supply
+/- 15 VDC for 10 TE – 230 VAC fro 1 HE
Power consumption
4 W
Operating temperature range
-5 °C to 45 °C
Relative Humidity
95 % non condensing
Cooling
Natural convection
Size
10 TE
Weight
0.40 Kg
Size
19” 1 HE
Dimensions (W x H x D)
483 x 44 x 213 mm
Weight
2 Kg
A2 / EUROPEAN STEREO
Input connectors
2 x mini XLR (Cannon)
Input level
-12 to 6 dBm
Input impedance
600 Ohm or High impedance, selectable
Audio 1 carrier level
-13 dB referring to video carrier, adjustable
Audio 2 carrier level
-20 dB referring to video carrier, adjustable
Output connector
SMB male
Audio inputs separation
> 70 dB
Common mode rejection ratio
> 40 dB
Frequency response
+/- 0.4 dB from 30 Hz to 15 KHz
(referred at 50 Hz with pre-emphasis and
de-emphasis)
Distortion
< 0.7 % at 50 KHz of peak deviation
(with pre-emphasis and de-emphasis from
30 Hz to 15 KHz)
Signal to noise (not weighted)
> 65 dB respect to 50 KHz of deviation
Stereo diafony
> -43 dB
Mono diafony
> -75 dB
Sound mode
Mono, Stereo , Dual Sound, local or remote selectable
GENERAL
 
Power supply
+/- 15 VDC for 10 TE – 230 VAC fro 1 HE
Power consumption
3 W
Operating temperature range
-5 °C to 45 °C
Relative Humidity
95 % non condensing
Cooling
Natural convection
Size
10 TE
Weight
0.40 Kg
Size
19” 1 HE
Dimensions (W x H x D)
483 x 44 x 213 mm
Weight
2 Kg
NICAM STEREO
Input connectors
XLR (Cannon)
Input level
0 dBm
Input impedance
600 Ohm or High impedance unbalanced
Audio mono output connector
XLR (Cannon)
Audio mono output impedance
600 Ohm balanced
IF input & output connectors
BNC female
IF input & output impedance
75 Ohm
IF input & output insertion loss
< 1 dB
Video & audio NICAM carriers
Standard B/G : 38.9, 33.4, 33.05 MHz
Standard I : 38.9, 32.9, 32.348 MHz
Standard L : 38.9, 32.4, 33.05 MHz
IF nominal Input level
Standard B/G : 103 dBuV
Standard I : 103 dBuV
Standard L : 99 dBuV
IF output NICAM level
Standard B/G : 81 dBuV,75 Ohm
Standard I : 83 dBuV, 75 Ohm
Standard L : 72 dBuV, 75 Ohm
Amplitude tolerance
+/- 0.5 dB
Group delay tolerance
+/- 20 ns
Attenuation at FM sound carrier
≥ 35 dB
Attenuation at adjacent vision carrier
≥ 40 dB
Sound mode
Mono, Stereo, Dual Sound, internally selectable
Frequency response
+/- 0.1 dB (20 Hz – 14 KHz)
Channel cross-talk
≤ 70 dB
THD
≤ 0.1 %
Signal to noise
≥ 60 dB
GENERAL
Main AC input voltage
90 – 250 VAC
Operating temperature range
5 °C to 55 °C
Relative Humidity
95 % non condensing
Cooling
Natural convection
Size
19” 1 HE
Weight
3.5 Kg
 

 

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