Technalogix TXF-1000, Руководство по эксплуатации

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1
Safegua
rds
2
Terms and
Warranty
3
Principl
e o
f
Operati
on
4
Ins
talla
tion
5
Operati
on
6
C
ont
rol Syst
em
7
RF Componen
ts
8
Power
Supp
ly
9
Maintenan
ce
10
Troubleshoo
ting
Directional Coupler
The dual directional coupler provides RF samples proportional to forward and
reflected RF power to be converted to DC voltages for monitoring. These analog
voltages are converted for processing using analog-to-digital converters and
provide the control system with valuable data for monitoring purposes. Output
power should be set following the operating procedure found elsewhere in this
manual. The directional coupler uses Type N connectors on lower power systems
and 7-16 DIN connectors are used for increased power handling capability. Other
connectors are available upon request – this connector is typically the RF output
connector on the back panel of the enclosure. On higher power systems, high
power handling connectors are used, especially in the overall output combiner.
On lower power systems, the coupler is typically based on microstrip architecture
on the exciter circuit board.
Frequency Range 41 – 100 MHz (option A)
162 – 254 MHz (option B)
470 – 862 MHz (option C)
Max Output Power 2 kW DTV (3 kW ATV)
Coupling -36 to -60 dB (on any channel)
Coupling variation < ±0.15 dB 162 – 254 MHz
< ±0.15 dB 470 – 862 MHz
Return Loss > 30 dB (VSWR < 1.07)
Directivity > 30 dB
Environmental Conditions -5 to +55 °C (+23 to +131 °F)
Connectors N, 7-16DIN, EIA 7/8” (dependent on power level)
Frequency Range 41 – 100 MHz (option A)
162 – 254 MHz (option B)
470 – 862 MHz (option C)
Max Output Power 20 kW DTV (30 kW ATV)
Coupling -48 to -72 dB (on any channel)
Coupling variation < ±0.15 dB 162 – 254 MHz
< ±0.15 dB 470 – 862 MHz
Return Loss > 30 dB (VSWR < 1.07)
Directivity > 30 dB
Environmental Conditions -5 to +55 °C (+23 to +131 °F)
Connectors EIA 1-5/8” or 3-1/8”(dependent on power level)