¡¡ Support Major Digital Terrestrial and Mobile TV Standards: DVB-T/T2 , ISDB-T,ATSC,DTMB, DVB-H/SH,CMMB,DAB/T-DMB, FLO ¡¡ Channel Bandwidth: 6MHz or 8MHz ¡¡ RF Input: VHF or UHF with step of 1Hz ¡¡ RF Input Range: -72dBm to -10dBm ¡¡ Noise Figure < 10dB ¡¡ Input Level AGC Squelch ¡¡ Adjacent Channel Interference: > 35dB ¡¡ RF Output: VHF or UHF with step of 1Hz ¡¡ RF Output Level: 30W/50W ¡¡ Max MER : 34dB typical, MER loss<2dB ¡¡ Spectrum Shoulder > 45dB ¡¡ Transit Delay: 5us ¡¡ Echo Cancellation Range: 1.5us to 448us ¡¡ Echo Cancellation: <40dB ¡¡ Gain Margin: -12dB max ¡¡ Powerful Linear and Non-linear Pre-correction ¡¡ Digital Shaping Filter Pre-correction ¡¡ IP Web Browser Control and Supervision, SNMP in Option ¡¡ Compliant with ATSC special Gap Filler Features |
Equipment Working Mode: ¡¡¡¡¡¡¡¡ Iso-Frequency Gap Filler ¡¡¡¡¡¡¡¡ Hetero-Frequency Transposer
RF Input: ¡¡¡¡¡¡¡¡ Frequency range: ¡¡¡¡¡¡¡¡VHF frequency range: 170 MHz to 240 MHz ¡¡¡¡¡¡¡¡or UHF frequency range: 470 MHz to 860 MHz ¡¡¡¡¡¡¡¡ Frequency step: 1Hz ¡¡¡¡¡¡¡¡ Channel bandwidth: 6MHz or 8MHz ¡¡¡¡¡¡¡¡ Input level range: - 72 dBm to -10 dBm ¡¡¡¡¡¡¡¡ Typical input level: - 55 dBm ¡¡¡¡¡¡¡¡ Max input level: 0 dBm ¡¡¡¡¡¡¡¡ AGC squelch: -75 to -10dBm, +/-3dB ¡¡¡¡¡¡¡¡ Noise figure:<8dB ¡¡¡¡¡¡¡¡ Doppler filter (max frequency):10Hz ¡¡¡¡¡¡¡¡ Adjacent channel interference (QEF): ¡¡¡¡¡¡¡¡Analogue > 35 dB, Digital >35 dB ¡¡¡¡¡¡¡¡ Return loss:>13dB ¡¡¡¡¡¡¡¡ Input connector type: N female, 50ohm
RF Output: ¡¡¡¡¡¡¡¡ Central frequency: ¡¡¡¡¡¡¡¡VHF frequency range: 170 MHz to 240 MHz ¡¡¡¡¡¡¡¡or UHF frequency range: 470 MHz to 860 MHz ¡¡¡¡¡¡¡¡ Frequency step: 1Hz ¡¡¡¡¡¡¡¡ Output level : 30W/50W +/-2dB, step 0.1dB ¡¡¡¡¡¡¡¡ Signal stability: +/- 0.1dB/10degrees ¡¡¡¡¡¡¡¡ In band ripple: < 1dB, Echo Cancellation off ¡¡¡¡¡¡¡¡ In band ripple: < 1dB, Echo Cancellation off ¡¡¡¡¡¡¡¡ Maximum MER: 34dB typical ¡¡¡¡¡¡¡¡ Shoulder and out of band rejection: >45dB ¡¡¡¡¡¡¡¡ Spurious: 36dB relative to total power? ¡¡¡¡¡¡¡¡ Return loss: >15dB ¡¡¡¡¡¡¡¡ Output connector type: N female, 50 Ohm
Gap Filler Performance: ¡¡¡¡¡¡¡¡ Digital filter shaping and tilt +/-2dB, step 0.2dB ¡¡¡¡¡¡¡¡ Minimum transit time <5us ¡¡¡¡¡¡¡¡ Echo cancellation range: 1.5us to 448us ¡¡¡¡¡¡¡¡ Gain margin: -12dB max ¡¡¡¡¡¡¡¡ Echo attenuation: >40 dB ¡¡¡¡¡¡¡¡ MER loss: < 2 dB ¡¡¡¡¡¡¡¡ Temperature management: RF mute or Power off at critical temperature |
ATSC Gap Filler Special Features: ¡¡¡¡¡¡¡¡ Shaping filter delay: 5,6,7,9us ¡¡¡¡¡¡¡¡ Shoulder and out of band rejection: >54dB ¡¡¡¡¡¡¡¡ Maximum MER: 38dB typical ¡¡¡¡¡¡¡¡ Gain margin: -4dB @ MER=27.3dB ¡¡¡¡¡¡¡¡ Echo attenuation: >30dB ¡¡¡¡¡¡¡¡ Pilot carrier phase noise: < -93 dBc/Hz@ 20KHz
Build-in Test Mode: ¡¡¡¡¡¡¡¡ PRBS TS Sequence ¡¡¡¡¡¡¡¡ Central Carrier Cancelled mode for noise test ¡¡¡¡¡¡¡¡ Iso-frequency Antenna coupling test
Clock Reference: ¡¡¡¡¡¡¡¡ Internal 10MHz ¡¡¡¡¡¡¡¡¡¡To stability : +/-1ppm(typical) ¡¡¡¡¡¡¡¡¡¡Time stability: +/- 1 ppm /year ¡¡¡¡¡¡¡¡¡¡10MHz reference Output level: 0dBm +/- 3dB ¡¡¡¡¡¡¡¡External 10MHz ¡¡¡¡¡¡¡¡¡¡10MHz Input level: -15dBm to +15dBm ¡¡¡¡¡¡¡¡¡¡Frequency: 10MHz+/-5ppm ¡¡¡¡¡¡¡¡¡¡Input connector type: BNC female, 50 Ohm
Control Mode: ¡¡¡¡¡¡¡¡ Local control: 6 buttons, LCD screen, LED ¡¡¡¡¡¡¡¡ Remote control: WEB browser through IP Ethernet RJ-45, SNMP in option ¡¡¡¡¡¡¡¡ User friendly man machine interface
Pre-correction: ¡¡¡¡¡¡¡¡ Linear pre-correction: shaping filter ¡¡¡¡¡¡¡¡ Non linear pre-correction: AM-AM, AM-PM Non linear Pre-correction: Single shoulder and double shoulder.
Correction |
Nb Point |
Abscissa range |
Ordinate Range |
Step |
AM/AM |
16 |
-12 dB to +12dB |
-6dB to +6dB |
0.05dB |
AM/PM |
16 |
-12 dB to +12dB |
-25¡ã to +25¡ã |
0.05dB/0.2¡ã |
Physical Conditions: ¡¡¡¡¡¡¡¡ Power supply: AC 220V+/-15% ¡¡¡¡¡¡¡¡ Power Consumption: <220W for 30W Gap Filler <300W for 50W Gap Filler ¡¡¡¡¡¡¡¡ Operating temperature: 0-40¡æ ¡¡¡¡¡¡¡¡ Dimension: L=500mm,W=482mm,H=89mm(2RU) ¡¡¡¡¡¡¡¡ Weight: 13 kg |