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FM 방송용 엑사이터

by 권오달 posted Feb 21, 2024
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캐나다 산 입니다.

주파수 88-108 MHZ

출력 1 - 55W 가변

FM 방송용 입니다.

1000 - 3000 W  RF AMP 와 같이 사용 했던 것 입니다.

가격 450만원

010-5251-6190

 

SPECIFICATIONS

 

GENERAL:

Power Output Range: 1 to 55 watts, adjustable by front panel controls

Frequency Range: 87 to 108 MHz, digitally programmable in 10 KHz steps by front panel

Fine Frequency Range: ±9999Hz, digitally programmed in 1 Hz steps by front panel controls

RF Output Impedance: 50 ohms, BNC jack; VSWR protected

RF Output Monitor: -30dBc, BNC jack

RF Harmonic and Spurious Suppression: Meets or exceeds all FCC, DOC and ISC requirements and CCIR recommendations for a 55 watt transmitter when used with optional low pass filter

Frequency Stability: ±250 Hz, 0¡ to 50¡C ambient temperature range

Modulation Type: Direct digital synthesis using a 32 bit NCO (numerically controlled oscillator)

Display: Backlit 4½ digit and 32 character displays for control, monitor and status. Alarm log holds up to 99 entries in reverse chronological order

Modulation Capability: 150% (±75 KHz reference standard)

Modulation Indication: Color-coded LED bargraph indicating total modulation depth in 5% increments

Asynchronous AM S/N Ration: 75dB minimum below reference carrier with 100% amplitude modulation using 75ųs de-emphasis (no FM modulation present)

Synchronous AM S/N Ratio: 60 dB below reference carrier with 100% amplitude modulation at 400 Hz with 75ųs de-emphasis

 

Electrical and Mechanical:

AC Input power: 120 or 240 VAC ±10%, 50/60 Hz, 260 watts typical at 50W output

Dimensions: 5.25 inches (13.34 cm) H x 19 inches (48.26 cm) W x 20 inches (50.8) D, slide-out mounting rails included

Mounting: Standard 19Ó (48.3 cm) EIA rack mountable

Weight: 40 lbs (18kg)

 

Operating Environment:

Temperature Range: 0¡ to 50¡C

Relative Humidity: To 95%, non-condensing

Altitude: To 13,000 feet (4,000 meters). Derate 2¡C/1000 ft, 3¼C/500m

 

Stereo Performance with Digital Input Module:

Input connector: Two total; one XLR female, one optical input receiver

XLR Input Impedance: 110 ohms, nominal

Input Level: -4.0dB full scale reference, factory programmed

Data Format: AES/EBU (reference standards; AES5-1984, ANSI S4.28-1984, AES3-1985, ANSI S4.40-1992 and AES3-1992)

Date Rate: Any in range 25 KHz to 55 KHz (32, 44.1 or 48 KHz typically)

Digital Stereo Generator: The digital input module generates the composite stereo baseband signal from the left and right digital audio present in the AES/EBU data

Pre-Emphasis: 0, 25, 50, or 75ųs, locally selectable

Pilot Carrier: 19 KHz ±0.1 Hz. 9% injection level, factory programmed. Locally selectable on or off. Available on rear panel BNC jack, as TTL or 1vpp sine for RBDS operation.

38 KHz Suppression: 80dB below ±75Hz deviation reference

Stereo Separation: Better than 60dB, 30Hz to 15 KHz

Amplitude Response (L or R): ±0.2 dB, 30Hz to 15KHz, referenced to 0dB at 400Hz

FM Signal to Noise Ratio (L or R): 80dB below 100% modulation (reference 400Hz, measured in a 22Hz to 22KHz bandwith with 75ųs de-emphasis and DIN ÔAÕ weighting)

Stereo Total Harmonic Distortion (L or R): 0.025% or less, 30Hz to 15KHz, measured in 22Hz to 22KHz, bandwith with 75ųs de-emphasis

Intermodulation Distortion (L or R): CCIF: 0.008% or less (14/15KHz 1:1); SMPTE: 0.025% or less (60 and 7000HZ 1:1)

Transient Intermodulation Distortion (DIM) (L or R): 0.05% or less (2.96KHz square wave/14KHz sine wave)

Stereophonic Crosstalk: 60dB below 100% (30Hz-15KHz) modulation reference: L+R to L-R and L-R to L+R

Stereo Monaural Mode Control: Local control. Configures the digital audio receiver to accept both L and R (Channel Aand B) in stereo mode or L only (Channel A) in monaural mode

Backup Analog Composite Mode: Local/Remote control. Disables digital stereo generator and reconfigures digital input module to accept analog composite stereo on existing composite input connector located on rear panel. All SCA inputs remain valid.

 

 

Monaural Performance with Digital Input Module:

FM Signal to Noise Ratio: 90db below 100% modulation (Reference 400Hz at ±75KHz deviation with 75ųs de-emphasis and DIN ÔAÕ weighting in a 22Hz to 22 KHz bandwith)

Harmonic Distortion: 0.005% or less 30Hz to 15KHz (22Hz to 22KHz bandwith with 75ųs de-emphasis)

 

Wideband Composite Operation with Analog Input Module:

Inputs: One balanced (floating BNC jack), one unbalanced (BNC jack), one unbalanced front panel test input (BNC jack)

Input Impedance: Balanced Ð 10K/50 ohm selectable. Unbalanced-10 k ohm

Input Level: 3.5V p-p nominal for ±75KHz deviation

Amplitude Response: ±0.05dB 30Hz to 53KHz

FM Signal to Noise Ratio: 90 dB below 100% modulation (Reference 400Hz at ±75KHz deviation with 75ųs de-emphasis and DIN ÔAÕ weighting 20Hz to 80KHz bandwidth)

Harmonic Distortion: 0.005% or less at 400Hz measured in a 22Hz to 80KHz bandwidth with 75ųs de-emphasis

CCIF Intermodulation Distortion: 0.009% or less (15KHz/14KHz 1:1 ratio)

SMPTE Intermodulation Distortion: 0.015% or less (60Hz/7KHz 1:1 ratio)

Transient Intermodulation Distortion: 0.015% or less (2.96KHz square wave/14KHz sine wave)

Composite Phase Response: ±0.5¡ from linear phase 30Hz to 53KHz

Stereo Separation: Better than 50dB, 30Hz to 15KHz when measured in conjunction with a high quality stereo generator and demodulator

 

Monaural Performance with Analog Input Module:

Input Impedance: 600 ohms balanced, resistive, transformerless

Input Level: +10 dBm nominal for ±75KHz deviation at 400Hz (adjustable)

Frequency Response: ±0.05db (30Hz to 15KHz) selectable flat, 25, 50, or 75ųs pre-emphasis

FM Signal to Noise Ratio: 90dB below 100% modulation (Reference 400Hz at ±75KHz deviation with 75ųs pre-emphasis and DIN ÔAÕ weighting in a 22Hz to 22KHz bandwidth)

Harmonic Distortion: 0.005% or less at 400Hz measured in a 22Hz to 22KHz bandwidth with 75ųs de-emphasis

CCIF Intermodulation Distortion: 0.009% or less (15KHz/14KHz 1:1 ratio)

SMPTE Intermodulation Distortion: 0.015% or less (60Hz/7KHz 1:1 ratio)

Transient Intermodulation Distortion: 0.015% or less (2.96KHz square wave/14KHz sine wave)

 

SCA (RBDS/RDS) Performance:

Inputs: 3 Unbalanced (BNC jack)

Input Impedance: 10k ohm

Input Level: 2.8V p-p nominal for ±7.5KHz deviation

Amplitude Response: ±0.5dB 20KHz to 100KHz

Subcarrier Frequency Range: 57KHz to 92KHz (25KHz to 92KHz monaural)

 

Analog Backup Operation with Digital Input Module:

Input Connector: One balanced (BNC jack)

Input Impedance: 10K ohm

Input Level: 3.5V p-p nominal for ±75KHz deviation

Amplitude Response: ±0.2dB, 30Hz to 53KHz

FM Signal to Noise Ratio: 85db below 100% modulation (Reference 400Hz at 75ųs de-emphasis and a DIN ÔAÕ weighing 20Hz to 80KHz bandwidth)

Harmonic Distortion (plus noise): 0.02% or less, 30Hz to 53KHz, measured in 22Hz to 80 KHz bandwidth with 75ųs de-emphasis

Stereo Separation: Better than 38dB, 20Hz to 15KHz when measured in conjunction with a high quality stereo generator and demodulator

CCIF Intermodulation Distortion: 0.008% or less (15KHz/14KHz 1:1 ratio)

SMPTE Intermodulation Distortion: 0.02% or less (60Hz/7KHz 1:1 ratio)

Transient Intermodulation Distortion: 0.015% or less (2.96Hz square wave/14KHz sine wave)