Transmitter

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UHF Transmitter
20W Digital UHF ATSC Transmitter
Both linear and Non-linear pre-corrections are made at factory adjustment. Automatic recognition between ASI and SMPTE310M single connector transport stream input. ALC circuitry continually monitors and keeps output power stable at the programmed level.

These transmitters were designed to attend the wide variety of broadcasters demands, as well as the majority of the international needs. They make use a highly reliable solution of air refrigeration.

Spec.
FEATURES:
3 Hyperterminal RS232 Interface
·System Configuration and alarms
·LO Leakage Supression
·Image Frequency Supression
·Power Levels
3 Performance:
·Shoulder attenuation: < -47dB @ ±3MHz
·MER: ³34dB
3 Protections:
·Power Supply: Over-Current, over voltage
·Power Amplifier over temperature
·Refletecd Power
3 Self-cooling
3 TS rate adaptation
3 PCR Re-stamping
3 LDMOS technology
3 IF Complex Modulation
3 Adaptive Non-linear Pre-correction at Factory
adjustment
3 Soft Start
3 ASI / SMPTE310M compatible
3 Data / Null Packets rate measurement
OPTIONAL:
3 External 10MHz reference input allows optional GPS
measurement synchronization
INCLUDED:
3 Non-Linear Pre-correction at Factory
3 Linear pre-correction at Factory
3 English manual
INPUTS:
Transport Stream Input ATSC/MPEG2, compliant to
SMPTE310M or ASI
Transport Stream connector 75W BNC
Transport Stream data rate 19.39Mbps (SMPTE310M)
/ 270Mbps (ASI)
External time base 10MHz (0 to +10dBm)
External time base connector 50W BNC
OUTPUT:
RF Output Power 20Wrms
RF output connector N Female
Modulation Mode 8VSB. All-Digital Complex IF
modulation
IF 18.833916MHz
Channel Bandwidth 6MHz
Test Signal PRBS, Pseudo Random Bit
sequence
Frequency Range UHF, Ch14 to Ch69 (4 bands)
Digital/Analog Converter 16 bit
Pilot frequency overall
stability ±0.3 ppm
Peak to peak frequency
response < 0.2dB
Peak to peak group delay < 20ns
Conducted spurious
and harmonics < -60 dBc, FCC 47 Part74
Radiated spurious
and harmonics < -60dBc, FCC 47 Part74
MER (Modulation Error Rate) > 34dB (transmitter output)
GENERAL:
Serial interface RS 232
Oscillator Synthesized by PLL
Internal time base 10MHz OCXO
Frequency stability ±0.3 ppm
Power Supply(50/60Hz) 208/240Vac, biphase, 3 wires
AC input range 180Vac ~ 250Vac
AC consumption 330W
Station temperarture range from 40°F to 90°F
Humidity range from 0 to 80%
Dimensions (inches) 5.24 H, 19 W, 22.64 D
Weight NET: 30.9lbs







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