Linear ADVANCED AT7200, Руководство пользователя

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AT7400 Owner Manual Rev. 2.0 – October 2006-10-23 Section 1 - 3/7
3
4. AT7200 – 200W UHF ATSC/8VSB Transmitter - Technical Specifications
Electrical
Main 220/240 VAC, bi phase, 50-60 Hz. 3w.
Consumption 1600W.
PFC Included
Signal Input
Transport Stream Input ATSC/MPEG2, compliant to SMPTE310M
Input Data Rate 19.39 Mbps
External Reference Signal 10MHz. (0 to +10 dBm).
Input Connector 75
Ω
(BNC),
Reference Input Connector 50
Ω
(BNC),
RF
RF Output Power 200w (rms)
Modulation Mode 8VSB. All-Digital Complex IF modulation
IF 18.833916 MHz.
Channel Bandwidth 6MHz.
Test Signal PRBS. Pseudo Random Bit Sequence
Frequency Range UHF. Ch14 to Ch69, (4 bands).
Frequency Step 1 Hz. ± 220kHz
Symbol Rate 10.76 MSymbol/sec.
Digital/Analog Converter 16 bit
All –Digital Linear. Pre-Correction Included
Pilot frequency stability overall ± 0.3 ppm.
Peak to peak frequency response
≤
0.15 dB.
Peak to peak group delay response
≤
15 ns.
Phase noise
≤
-104 dBc/Hz @ 20kHz offset.
Conducted spurious and harmonics < -60 dBc, FCC 47 Part 74.
Radiated spourious and harmonics < -80 dBc, FCC 47 Part 74.
≥
39dB (modulator output) typical.
≥
39 dB (exciter output) typical. MER (Modulation Error Rate)
≥
29 dB (transmitter output) typical.
RF output connector EIA 7/8” Flanged.
Output sample connector N
Remote Control
RS-232 Dial-up network interface via hyper-terminal
Ethernet SNMP: IP network interface via Web Browser.
Mechanical
Internal drawer’s air speed: 400 ft/minute.
Air Refrigeration
Overall Air flow: 21ft
3
/sec.
Dimensions 58”(H), 28”(W), 43”(D)
Weight Gross: 286.7 Kg NET: 236.70 Kg
Foot print 28”(W), 7’(D)