50 W FM EXCITER

 

150 W FM EXCITER

 

 

50-150 W FM EXCTER /ST-501.1/ST501.1A Models)

 

 

 

HIGHLIGHTS

 

 

 


· DIGITAL FREQUENCY SETTING ON FRONT PANEL FROM 87. 5 TO 108 MHz. (100 KHz. STEPS).

· FOLDBACK AND AUTOMATIC GAIN CONTROL CIRCUITS.

· SELECTION MENU ON LCD SCREEN.

· MICROPROCESSOR CONTROLLED.

· CD. HIGH QUALITY AUDIO.

· LOW DISTORTION AND HIGH S/N RATIO.

· POWER OUTPUT 50 W OR 150 W  (ADJUSTABLE).

· INPUTS: THREE SUBCARRIER INPUTS. (SCA), ONE COMPOSITE SIGNAL (MPX), ONE MONOPHONIC SIGNAL

· PASSWORD TO FREQUENCY CHANGES.

· 10 MEMORISED PRESETTING FREQUENCIES FOR N+1 SYSTEMS. (OPTIONAL).

 

 

TECHNICAL SPECIFICATIONS

 

FREQUENCY RANGE: 87.5 to 108 MHz digitally programmable in front panel in 100 KHz steps. 10 frequencies preselected in memory.

POWER OUTPUT: 50 W or 150 W continously variable N (M) Connector. Open and short circuit protected.

R.F. OUTPUT IMPEDANCE.: 50 Ohms.

FREQUENCY STABILITY : +/- 200 Hz +32ºF TO +122ºF

MODULATION TYPE: F3 .

MODULATION CAPABILITY: +/- 410kHz.

COMPOSITE INPUT IMPEDANCE UNBALANCED:1 K Ohm. Nominal, resistive.

COMPOSITE INPUT LEVEL: 3.5 v p-p Nominal, for + 75 kHz. deviation.

SIGNAL TO NOISE RATIO: 88 dB below +/- 75 KHz deviation 400 Hz. Measured from 20 Hz to 200 KHz badwidth and 50 usec. deemphasis

HARMONIC DISTORTION: < /= a 0.015%

AMPLITUDE RESPONSE: 0 dB from 50 Hz to 150 KHz.

PHASE RESPONSE: +/- 0,1º from linear phase 50 Hz to 100 KHz.

GROUP DELAY VARIATION: +/- 5 Nanoseconds, 50 Hz to 100 KHz.

STEREOPHONIC SEPARATION: 50 dB from 50 Hz to 15 KHz and 60 dB from 400 Hz to 5 KHz (measured using SERATEL ST-501.0 Stereo Generator ).

ASYNCHRONOUS AM SIGNAL TO NOISE RATIO: 65 dB below equivalent reference carrier with 100% amplitude modulation, 400 Hz and 50 usec. deemphasis. (no FM modulation present).

SYNCHRONOUS AM SIGNAL TO NOISE RATIO: 60 dB below equivalent reference carrier with 100% amplitude modulation, 1 kHz (FM modulation +/- 75 KHz, 400 Hz).

SCA INPUT IMPEDANCE: 1 KOhm. Nominal resistive

SCA INPUT LEVEL: 3.5 v. p-p nominal for +/- 7.5 KHz deviation.

SCA AMPLITUDE RESPONSE: 0 dB, 35 KHz to 150 KHz.

 

MONOAURAL AUDIO SPECIFICATIONS

 


AUDIO INPUT IMPEDANCE: 600 Ohm. Balanced resistive.
AUDIO INPUT LEVEL:+12 dBm Nominal for +/- 75 KHz desviation 400 Hz.
AUDIO RESPONSE: +/- 0.5 dB, 50 Hz to 15 KHz selectable 50 or 75 usec. preemphasis
HARMONIC DISTORTION: < /= 0.05%, 20 Hz to 15 KHz.

 

GENARAL SPECIFICATIONS

 

 

REAR PANEL CONNECTORS:

1 BNC composite signal.
3 BNC SCA
1 BNC RF test.
1 N RF output.
1 3 p. Monoaural input.
1 25 Remote.
1 RCA inhibition.

LCD MULTIMETER:

Password.
Currents.
Total modulation.
FWD power.
RFL power.
Operation frequency.
Frequencies in memory.

Local/remote control


AC INPUT POWER: 220 VAC +/-10% 50/60 Hz.
ENVIRONMENTAL: Ambient temperature range: 0º to 45ºC (32 to 132 Degrees F). Humidity: 90%. Altitude: 4.000 mts. (12.000 Feet).

POWER CONSUMPTION: 115 VA (50 W), 280 VA (150 W).
DIMENSIONS: Height: 2 Units. Depth: 15.75 inches. Widht: 19.00 inches..

 

 

 

Download  (.PDF)

 

 

 


 

 

 

 

FM DIGITAL EXCITER

 

ADVANCED SOUND MODEL

 

 

 

ADVANCED SOUND MODEL

 

 

 

HIGHLIGHTS

 

 

 


· CRYSTAL CLEAR FM.  SPECIALLY OPTIMISED 32 BIT NCO GIVES THE DISTORSION FREE SIGNAL YOU REQUIRE.

· MODULAR INTERFACES. PLUG AND PLAY WITH JUST THE INTERFACES YOU WANT(MONO, STEREO, MPX, AES/EBU, RDS, SCA).

· USER FRIENDLY. EASILY OPERATED AND PROGRAMMED VIA THE ILUMINATED FRONT PANNEL DISPLAY AND SERIAL DATA PORT.

· REAL TIME CLOCK. COMPLETE CONTROL OF PROGRAM SOURCE AND BROADCAST FRECUENCY 24 HOURS A DAY.

· INTEGRAL MICRO-CONTROLER CONTINOUSLY MONITORS THE HEALTH OF YOUR EXCITER

· VERY LOW DISTORTION AND HIGH S/N RATIO.

· POWER OUTPUT 50 W  (ADJUSTABLE).

 

 

 

TECHNICAL SPECIFICATIONS

 

            MECHANICAL SPECIFICATIONS.

 

Width

For standard 19" (482,6mm) rack.

Height

3U of rack .

Depth

485mm.

Weight

15 Kg.

 

 

 

            ENVIRONMENTAL SPECIFICATIONS.

 

Storage temperature

-10/+70ºC

Operational temperature

0 / +50°C.

Relative Humidity

90% máx.

Height

4.000m.

 

 

 

            ELECTRICAL SPECIFICATIONS.

 

Voltage

220VCA ±10% -50/60Hz.

Power consumption

115 Vac.

RF output power

Variable between 3 to 50W.

There is an automatic power level control and a foldback circuit for protection against excessive reflected power. Permits short circuit and open circuit output protection.

RF output impedance

50W.

RF output connector

N female.

Frequency range of operation

87.5 to 108 Mhz. Front panel and control terminal selection in steps of 100 Khz.

Non essential radiation

Meets  CCIR and FCC requirements.

Frequency stability

±200Hz between 0 and 50ºC.

Modulation type

With frequency, F3, ±75KHz for 100% modulation level.

Modulation range

±300KHz. Limited by software

Synchronous signal to noise ratio

-60dB referred to 100% modulated carrier.

(Modulation present with FM ±75KHz and 400Hz audio).

Asynchronous signal to noise ratio

-60dB referred to the 100% AM carrier.

(Without FM ).

Plasma Screen Measurements

Active frequency.

Deviation (maximum of scale ±150KHz)

Source level and modulation (-99 to –20dbm)

Incident/Reflected Power.

Audio Input Signals

1x Composite Signal (MPX,RDS,SCA). Unbalanced (10K, 600 W, 50 W)

2x Analogue, Left + Right, balanced 600 W.

1x Digital, balanced 600 W, 75W unbalanced, Fibre optic Toshiba connector. Auto rate and bit detection from 32K to 56K, 16bit to 24bit as standard. To 96K by option.

· 3 Sub-carriers (SCA). Unbalanced.

 

 

 

            STEREO-MONO MULTIPLEX SIGNAL SPECIFICATION (MPX,RDS,SCA).

 

Number of inputs

1 via BNC.

Input signal level

3.5Vpk.pk for ±75KHz of deviation.

(Variable from 1.5Vpk.pk to 10Vpk.pk).

Input impedance

10kW, 600W, 50W  unbalanced.

Amplitude response

±0.05dB from 30Hz to 96KHz.

FM Mono Signal/Noise ratio

Better than 90dB (typical 96dB) at ±75KHz deviation and 400Hz. Measured over the pass band 20Hz to 200KHz and de-emphasis of 50ms.

FM Stereo Signal/Noise ratio

Better than 80dB (typical 84dB) at ±75KHz deviation and 400Hz. Measured over the pass band 20Hz to 200KHz and de-emphasis of 50ms.

Separation of channels

50dB from 50Hz to 15KHz and 60dB from 400Hz to 5KHz. Measured with the Seratel model ST-501.0 stereo generator.

 

 

            STEREO-MONO LEFT RIGHT SPECIFICATION.

 

                                                                                 

Number of inputs

2x Cannon, balanced, 600W

Input signal level

-12dbm to +15dbm

Amplitude response

±0.05dB from 30Hz to 15KHz following pre emphasis curve.

Pre emphasis

Configurable, 0uS, 25uS, 50uS, 75uS, 125uS

Distortion, Stereo

0.02% at 400Hz

Distortion, Mono

0.01% at 400Hz

FM Mono Signal/Noise ratio

Better than 90dB (typical 96dB) at ±75KHz deviation and 400Hz. Measured over the pass band 20Hz to 100KHz and de-emphasis of 50ms.

FM Stereo Signal/Noise ratio

Better than 80dB (typical 84dB) at ±75KHz deviation and 400Hz. Measured over the pass band 20Hz to 100KHz and de-emphasis of 50ms.

Separation of channels

60dB below  ±75KHz reference from 30Hz to 15KHz.

 

 

            STEREO-MONO AES3/EBU SPECIFICATION

                                                                      

                                                                                 

Number of inputs

1x Cannon, balanced, 600W, 1x  RCA, unblanced, 75W, 1x  Fibre Optic (optional), Toshiba type

Input signal level

0dbfs

Amplitude response

±0.05dB from 30Hz to 15KHz following pre emphasis curve.

Pre emphasis

Configurable, 0uS, 25uS, 50uS, 75uS, 125uS

Distortion, Stereo

0.02% at 400Hz

Distortion, Mono

0.01% at 400Hz

FM Mono Signal/Noise ratio

Better than 90dB (typical 96dB) at ±75KHz deviation and 400Hz. Measured over the pass band 20Hz to 100KHz and de-emphasis of 50ms.

FM Stereo Signal/Noise ratio

Better than 80dB (typical 84dB) at ±75KHz deviation and 400Hz. Measured over the pass band 20Hz to 100KHz and de-emphasis of 50ms.

Separation of channels

60dB below  ±75KHz reference from 30Hz to 15KHz.

 

 

 

            SUB-CARRIER SIGNAL SPECIFICATION (SCA).

 

Number of inputs

3 via BNC, analogue

Input levels

3.5Vpk.pk for ±7´5KHz deviation.

Input impedance

1KW unbalanced.

Amplitude response

±0.5dB from 300Hz to 4.5KHz.

 

 

 

 

Download  (.PDF)

 

 


 

 

 

FM EXCITER ST- 501.2

 

 

 


FM EXCITER ST-501.2 MODEL

 

 

          TECHNICAL SPECIFICATIONS.

 

 

            MECHANICAL SPECIFICATIONS.

 

                      Width........................................ Standard 19" Rack of - 482,6mm

                      Height....................................... 2 Unit of Rack – 87.2mm

                      Depth........................................ 393 mm

                    

            ENVIROMENTAL SPECIFICATIONS.

                                  Temperature............................. 0º-45º C

                      Relative Humidity..................... 90% máx.

                      Altitude..................................... 4.000 m.

 

 

            ELECTRICAL SPECIFICATIONS