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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 : 5W/10W +/-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
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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 |
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AM/AM |
16 |
-12 dB to +12dB |
-6dB to +6dB |
0.05dB |
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AM/PM |
16 |
-12 dB to +12dB |
-25° to +25° |
0.05dB/0.2° |
Physical Conditions:
Power supply: AC 220V+/-15%
Power Consumption: <85W for 5W Gap Filler
<110W for 10W Gap Filler
Operating temperature: 0-40℃
Dimension: L=500mm,W=482mm,H=44.5mm(1RU)
Weight: 9 kg |
