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Technical Specifications

 

STXe 60 - Technical Specifications

Nov 23, 2017

GENERAL

RF Power Output5-66W
Output Impedance50 ohms nominal
VSWRRated power into 1.5:1 VSWR. Open and short circuit protected at all phase angles
Frequency Range87.5MHz to 108MHz; 10kHz increments
Frequency StabilityInternal TCXO: +/-100Hz factory calibration, +/-4ppm agin/temp, -10 degrees C to +50 degrees C; External Input: +/- accuracy of reference source
Audio InputsAES, L&R analog, Unbalanced composite, SCA audio inputs, RDS input
Modulation TypeDirect-to-channel digitally generated FM (no analog up-conversion); FM only
Modulation CapabilityUp to 300kHz
Asynchronous AM S/N Ratio75dB below rated power reference carrier with 100% AM modulation at 400Hz, with no FM modulation present
Synchronous AM S/N Ratio60dB below rated power reference carrier with 100% AM modulation at 400Hz, with FM modulation +/- 75kHz at 400Hz
Spurious and Harmonic85dB or better typical, low pass filter standard
AC Input90 to 264VAC; 47-63Hz
Power Factor0.99 typical at 110VAC
AC Inputs TestingTested to EN 301 489-1, including Voltage Dips and Dropouts (Section 9.7B), Voltage Surges (Section 9.8), and conducted immunity and conducted radiation
RegulatoryFCC; IC; CE; BETS-6; IEC 215 Safety

ENVIRONMENTAL

Temperature Range-10 degrees C to +50 degrees C
Altitude10,000 ft (3048 m)
Humidity95% maximum, non-condensing

STEREO PERFORMANCE

Operational ModesStereo, mono (L+R), L only, R only
Input LevelAES: -2dBfs for 100% modulation; 16-24 bits (32, 44.1, 48 or 96kHz typical rates for AES/EBU devices)
ImpedanceAES: 110 ohms balanced; balanced
ConnectorAES: Wire-XLR
Amplitude Response+/- 0.25dB, 20Hz to 15kHz
THD + Noise0.03 or better @400Hz, measured 10 Hz-22Khz, 75 uS deemphasis Stereo: 0.01 typical @400Hz, measured 10 Hz-22Khz, 75 uS deemphasis
S/N RatioAES: 95dB typical below 100% modulation @ 400Hz, 10Hz-22Khz bandwidth,A-weighted filter 100dB typical below 100% modulation @ 400 Hz, 10Hz-22Khz bandwidth, CCIR-468 filter Analog: 93dB typical below 100% modulation @ 400Hz, 10Hz-22Khz bandwidth,A-weighted filter 98dB typical below 100% modulation @ 400 Hz, 10Hz-22Khz bandwidth, CCIR-468 filter Stereo: 80dB or better below 100% modulation @ 400Hz, unweighted
Stereo Separation70dB, 20Hz to 15kHz
Linear Crosstalk70dB below 100% modulation; 20Hz to 15kHz; main to sub and sub to main
Pilot Stability+/- 0.3Hz, 0 degrees C to +50 degrees C
Audio Overshoot150% peak deviation max

MONO PERFORMANCE

Operational ModesMono (L+R), L only, R only
Input LevelL&R: +10dBm for 100% modulation into 600 ohms
Impedance600 ohms or 10k selectable
ConnectorXLR
Amplitude Response+/- 0.25dB, 20Hz to 15kHz
THD + Noise0.005 typical @400Hz, measured 10 Hz-22Khz, 75 uS deemphasis
IMD Distortion20Hz to 15kHz
FM S/N Ratio86dB or better below 100% modulation @ 400Hz, 10 Hz-22Khz bandwidth, unweighted

COMPOSITE PERFORMANCE

Input Level3.5V p-p for 100% modulation into 10k ohms
ImpedanceBalanced: 10k ohms or 50 ohms selectable Unbalanced: 10k ohms
ConnectorBalanced: BNC Unbalanced: BNC
Amplitude Response+/- 0.03dB; 20Hz to 53kHz; 0.1dB; 53kHz to 99kHz
Phase Response+/- 0.1 degree from linear phase; 53kHz to 100kHz
THD + Noise0.005% or less @ 400 Hz, 10-22Khz bandwidth, 75 uS deemphasis
IMD DistortionSMPTE: 0.01% or less, (60/7000 Hz; 1:1 ratio) DIM-B: 0.005% typical (14 Khz)
FM S/N Ratio88dB or better below 100% modulation @ 400Hz, 10Hz-22Khz bandwidth, unweighted 95dB typical below 100% modulation @ 400Hz, 10Hz-22Khz bandwidth, A-weighted filter 100dB typical below100% modulation @ 400 Hz, 10Hz-22Khz bandwidth, CCIR-468 filter

SCA 1&2 PERFORMANCE (INTERNAL)

Input Level3.5V p-p for 10% deviation
Impedance10k ohms unbalanced
ConnectorBNC
Amplitude Response+/- 0.1dB; 53Hz to 100kHz
19kHz Output: 19kHz synchronization clock for external RBDS/RDS operation 1V pp into high impedance

PHYSICAL

Height3.5 inches (2 RU)
Width19" EIA rack mountable
Depth19.5 inches
Weight20lbs. unpacked

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