Thor Optical Mini CATV RF Transmitter 45-1000Mhz

F-RF-TX-MN-2mW
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Price: $ 1,509.95
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Description Features Drawings Video Model Selection Specification Q&A Documents Support
Description

The Thor Fiber Optical Mini CATV RF 45-900Mhz Transmitter is mainly used for transmitting long distance optical fiber transmission of CATV RF - Analog or digital QAM or ATSC Television Digital TV, telephone and data transmission. It's application for digital signal transmission of video and data in the cable television and communications industry. The transmission range can vary from 5km to 30km. It comes equipped with an advanced DFB laser that readily provides expectionally high performance and RF power, as well as automatic processing technology developed by our company. Finally it has a built-in micro-computer that automatically monitors the control system and guarantees excellent performance of the equipment.

Features
  • 45 -1000MHz working bandwidth
  • High performance DFB coaxial laser that has a great linking performance and stable output
  • Advanced CPU processing and with an auto monitoring system to supervise the operational status which leads to a longer life of the laser
  • Low power loss design(less than 8W) which creates a ver low operational temperature

IMPORTANT NOTE*** (it is very important to interface our unit with SC/APC - Angle Polished Connector to avoid any light reflections.

If your fiber is terminated with the  SC, ST, FC /PC flat connector, you need to use an optical jumper from PC type to SC/APC for proper conversion. 

Drawings
Video
HDMI Modulator and RF over fiber latency demonstration Thor Petit connected to Fiber optic TX and RX
This is a demonstration for showing you how to do HD video Encoding using QAM modulation and transporting it over 10Km of fiber This Specific setup is for applications where HDMI source " ROKU " device is connected to the HDMI RF modulator H-HDMI-RF-PETIT, the CATV RF channel number 2 created by the modulator then output through Coax is then connected to the CATV RF Fiber optic Transmitter, over single-mode fiber optic cable and over to the CATV RF optical receiver, the receiver converts the optical signal to electrical COAX RF signal again. The encoder modulators add a slight delay to the system, the fiber optic Tx and RX ads only 1ms delay.
Model Selection

F-RF-TX-MN-2mW  - 2mW laser up to10 Km over fiber

F-RF-TX-MN-10mW  - 10mW laser up to 40Km over fiber

Specification
Item Unit Technical specification
Wavelength nm 1310nm ± 20
Laser type   DFB laser
Optical modulation type   Direct optical strength modulation
Optical connector type  

SC/APC 

IMPORTANT NOTE*** (it is very important to interface our unit with SC/APC - Angle Polished Connector to avoid any light reflections.

If your fiber is terminated with the  SC, ST, FC /PC flat connector, you need to use an optical jumper from PC type to SC/APC for proper conversion. 

Frequency range MHz 45-862/1000

RF input level

dBuV

 72~82

Flatness in band dB

±0.75

Rf input resistance   75
Input reflection loss dB

≥16

Link C/N dB

≥51

Link C/CSO dB

≥60

Link C/CTB dB

≥65

AGC controlling range dB ±5
MGC controlling dB 0~10
Power Supply V DC 12 V/1 A
Power Loss W

≤ 8

Dimension mm 140 x 90 x 26

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Quick Installation guide
 
The Mini Transmitter and Mini Receiver set are plug and play devices if the RF input power to the TX and optical power Input to the RX are in the specified range.
 
 TX RF INPUT 15-25dBmV (75-85dBuV)  RX Optical INPUT should be +2 - 6dBm
 
TRANSMITTER:

1) Connect Power Supply to the Transmitter
 
2) Connect CATV RF Input to the F port connector - Please note, the RF Power should be     between 15-25dBmV (75-85dBuV)
 
3) Connect fiber optic cable to the Mini Transmitter Output - The Connector type MUST be     SC/APC, never use SC/PC (Blue flat connector)     NEVER LOOK DIRECTLY INTO THE UNITS OPTICAL OUTPUT (you could burn your eye)
 
4 ) For short distance, point to point transmission, please plug 5db fiber optic attenuator,    included in the box. (if the transmitter is used with a fiber optic splitter, the attenuator is not     needed due to splitters insertion loss).     The fiber loss is about 0.35db/km in 1310nm wavelength there is also some slight loss in path panel     junctions typically 0.1 -0.5db per junction
 
5) The TX should show "ON" on the LCD, meaning it is transmitting and outputting an optical signal.

RECEIVER:


1) Connect POWER Supply to the Receiver, "No Light Input" or "Level too Low" the LED will be RED
 
2) Connect CATV RF cable to the F port connector - RF Output, the output will be about 22dBmV (82 dBuV)
 
3) Connect fiber optic cable to the Mini Receiver INPUT – The Connector type MUST be SC/APC, never use SC/PC    (Blue flat connector)             NEVER LOOK DIRECTLY TO THE FIBER JUMPER. (You will burn your eye)

4) The Optical level by the receiver should be about  +2 to -6dBm
 
5) The LED should turn from RED to GREEN
 
5a) The RED LED means no Link Light detector
 
5b) The red light might also mean saturation, LEVEL TOO HIGH, it is easy to determine when you plug in the optical jumper the unit will go from RED to GREEN to RED again, it means the optical level is higher than +2Dbm , the receiver will still work correctly if this level will be not higher than +5dbm, If higher then +5, please add 5db attenuator included with your purchase.  
 

Question and Answers
Answer:
Unfortunately, RF Catv can only be transmitted over single-mode fiber. Multimode creates too much dispersion and reflections and the degradation is so severe, and so fast that it is literally impossible to put the cable on multimode. Would it be possible for you to pull a strand of single mode fiber? If possible that product you selected would be an ideal fit for your project.
Answer:
The multimode fiber doesn't support CATV RF, the easiest way would be to install the single-mode fiber and use the following devices: Transmitter https://thorbroadcast.com/product/4-mw-catv-rf-over-fiber-tx-45-870-mhz.htmlReceiverhttps://thorbroadcast.com/product/catv-rf-fiber-receiver-high-rf-power-rack-8230.html or if this is impossible, you can use RF to IP and IP to RF gateways.16 QAM to IP https://thorbroadcast.com/product/16-rf-tuners-to-iptv-ts-qam-output.htmlIP to 16 QAM Ethernet over Fiber Converters: https://thorbroadcast.com/product/10-100-1000-mbps-fast-and-gigabit-ethernet-over-1-fiber-media-8230.html
Answer:
If you have Single-mode fiber in the rooms,
You can use the following units point to multipoint RF over fiber equipment
 
8mw CATV RF Transmitter: F-RF-TX-8
https://thorbroadcast.com/product/8-mw-catv-rf-over-fiber-tx-45-870-mhz.html
1x8 fiber optic slitter ( 1x6 is not available) 
https://thorbroadcast.com/product/1-x-2-to-1-x-128-fiber-optic-couplers.html/226
6 pcs  CATV RF fiber-optic receivers
https://thorbroadcast.com/product/8-mw-catv-rf-over-fiber-tx-45-870-mhz.html
8mw CATV RF Transmitter: F-RF-TX-8
https://thorbroadcast.com/product/8-mw-catv-rf-over-fiber-tx-45-870-mhz.html
1x8 fiber optic slitter ( 1x6 is not available) 
https://thorbroadcast.com/product/1-x-2-to-1-x-128-fiber-optic-couplers.html/226
6 pcs  CATV RF fiber optic receivers
https://thorbroadcast.com/product/8-mw-catv-rf-over-fiber-tx-45-870-mhz.html
Answer:
CATV and RF in general has to be sent over Single Mode Fiber.
Formerly there were a couple companies who did Catv over multimode because it was analog, and they did very low frequencies, were able to make it work.
 
All of our units are wide band, covering the entire echelon of RF CATV, 45-870Mhz, which encompasses channels 2-135. Our correlating transmitter and receiver sets will only work on singlemode fiber. 
Especially since CATV in general is digital now, I don't even think you can get transmitter and receivers over MM that work in analog,
 
Please let me know if you have any questions or if you would like a quote on some of our current fiber optic transmitter and receiver sets. 
Answer:

The rules are :

Out fiber-optic RF CATV Transmitter and Receiver need to be connected
with single-mode fiber terminated with SC/APC connectors - this is
very important
RF input power to the F-RF-1310-TX-4mW needs to be +15 -  +25dbmv
Optical input power range into Receiver  F-RF-RX-RM  is +3 - -5dBm

Receiver outputs +45dBmv RF power in this optical input +3 - -5dBm range

You should have the RF output with OP +1.6 dBm, so something is wrong.
Are you using single-mode fiber end to end?
Are you interfacing our equipment with SC/APC fiber connectors?
 


Documents
downloadtx-rx-optical-mini-catv-rf-user-manual.pdf
User's Manual is avalible only for logged users.
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