Description

CATV RF over fiber optical Transmitter 45-1000Mhz

The Thor Fiber Optical Mini CATV RF 45-1000Mhz 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 an 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 exceptionally 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 the excellent performance of the equipment.

The F-RF-TX-MN-2 transmitter can be used with any or Thor Fiber optical RF receivers -

F-RF-RX-MN-2 Thor Fiber Optical Mini FTTH RF CATV CABLE TV Receiver with Dual Coax Output	F-RF-RX-RM CATV RF Fiber Receiver - High RF power - Rack Mountable	F-RF-RX-MN RF CATV Mini Optical Receiver	F-MININODE-2RP-HP Optical Mini-node - CATV RF Receiver with Return Path - High RF Output Power 48dBmV

The PN F-RF-TX/RX-MN-2mW Transmitter Receiver kit is a TX F-RF-TX-MN-2 + F-RF-RX-MN-2

The transmission distance of optical signals depends on the Optical TX output power and the receiving power range of the optical receiver. For example, the transmitting power for this unit is about +2 dBm, and the receiving power of the incoming signal and RX sensitivity for the F-RF-RX-NM2 is about -5 dBm, which creates an optical budget of 7 dB. Therefore, the maximum allowable loss in the optical fiber or network is 7 dB. The loss in fiber on a 1310 nm optical signal is about 0.35 dB per kilometer. Additionally, there is always some loss with interconnections on the optical connectors or optical patch panels.

Features

45 -1000MHz working bandwidth
High-performance DFB coaxial laser that has a great linking performance and stable output
Advanced CPU processing and 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 very 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

Application Examples

CATV RF QAM over fiber transport over single mode fiber cascading solution

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 - 1310nm 2mW laser up to10 Km over fiber

F-RF-TX-MN-2mW-1550 - 1550nm 2mW laser up to10 Km over fiber

F-RF-TX-MN-10mW - 1310nm 10mW laser up to 40Km over fiber

The device is usually sold as a Transmitter + Receiver kit allowing CATV RF transmission point to point over the fiber

F-RF-TX/RX-MN-2mW CATV Transmitter + receiver kit

F-RF-TX-MN-2mW	F-RF-RX-MN-2mW

Accessories & Upgrades

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	12V DC / 1.5A AC to DC power supply - Incuded ( F-Type Female coax connector)
Power Loss	W	≤ 8
Dimension	mm	140 x 90 x 26

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

Question:
I have two buildings that are connected with a 1500’ 3 pair multimode fiber optic cable. The one location has cable tv and the other does not. I currently have one pair of fibers available and wanted to see if I can send the CATV signal though them

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.

Question:
I have a question about your RF over fiber products. I realize these all say you must use single-mode fiber with SC APC connectors. I was told by a systems integrator that there is a chance it will work on multimode but it must be OM4 and under 3000 feet. Is this true? If so, what would the expected loss be?

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

Question:

Now we have pulled RJ 6 cable to all the rooms.

And also we have pulled OFC cable to all the rooms. The cable TC operator will give RF input to their setup box and from the setup, We have to take the audio-video signal to the TV.

I have 6 rooms now. So please tell me what all things I have to buy from you for watching TV with different program in different rooms.

Please give your suggestions.

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

Question:

I need the recommendation to transport 1 freq over fiber about 500 feet. Freq is 111 MHz.

- 256 QAM

- Kind of what I was thinking just wanted clarification to thank you

- Fabulous Thanks

Answer:

So it's RF; what kind of RF?

- https://thorbroadcast.com/product/thor-optical-mini-catv-rf-transmitter-45-1000mhz.html

The receiver can be either of these

https://thorbroadcast.com/product/thor-fiber-optical-mini-ftth-rf-catv-cable-tv-receiver-8230.html

https://thorbroadcast.com/product/rf-catv-mini-optical-receiver.html

- no problem. there are different types of RF; these particular units are specifically for QAM

- It will transport the entire RF CATV range as well.

Question:

Hi, looking to send cable TV signal over fiber from one building to another

Answer:

Question:

I would like to replace an obsolete set from Force, Incorporated. It is the CATVLite VSB/AM Video Receiver part # 2801R-MCST (receiver) and its compatible transmitter, the 2801T-MCST for wavelength 1310nm. We are transmitting an analog TV signal over multi-mode fiber. Will this be able to replace that? Thank you.

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.

Question:

Hello, I have a question about Optical/Rf power on the F-RF-RX-RM. We recently added the H-4SDI-QAM-IPLL to our system which allowed us to rearrange some things. The H-4SDI-QAM-IPLL and the H-4HD-EMH are sending IP streams to the H-12SDI-QAM-IPLL and then the modulated output is sending out all 20 channels to our CATV distribution. The F-RF-1310-TX-4mW take a feed of the CATV distro and sends it to another building on our campus with a F-RF-RX-RM. We currently get OP 2.6 and -1.6 with the optical pad and we have an RF level of 89. To get 89 we have an ATT-16 on the receiver and a 20db attenuator on the coax going into the transmitter. If we connect the TX and RX together via a fiber jumper we get signal on our test TV. It also works at the fiber patch leaving the building but as soon as we get to the building next door nothing even though the readings are almost the same, the OP is 1.6 on this side. What are the desirable levels? 1x H-12SDI-QAM-IPLL 1x H-4SDI-QAM-IPLL 1x H-4HD-EMH 1x F-RF-1310-TX-4mW 1x F-RF-RX-RM

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?

Question:

This is the current test setup that I will be working with next week.

Can you pass this along to an engineer to see if this setup is ideal?

Answer:

Yes, this is a good setup,

Please just note could facts:

RF Input power should be +15 to +25dbmv

The optical inputs into receives should be 0 to -5dBm

It would be very handy to have a CATV RF meter and optical meter, it will save you a lot of setup time because the RF power and Optical power need to be met in order to work properly and it is very had to determine that without instruments

If you do not have it, we have a very simple RF meter f and an Optical meter

Also in your picture you noted SM-APC for the connectors, I think you mean SC/APC.

Question:

Do you know if you could safely split the output of the transmitter in this kit to connect to 1x4 opticl slitter F-PLC-1X4 up to 4 receivers in total?

Answer:

The Optical output from this unit is +2dbm

The 1x4 splitter F-PLC-1x4 has 7.4db insertion loss

The receivers receiving sensitivity is +3 to -6dbm

You should be fine, it is on the border but it will work

Question:

I was looking for a good solution to pass Analog signal over multi-mode fiber. I work on a ship and the copper run would just be to long to set up a TV from our system. I already have fiber run in the area which is about 800ft of fiber. And the TV would be mounted around 40ft from the receiver at the fiber patch panel. This would be for Analog TV video.

Answer:

Thank you for contacting us.

If you are trying to pass along RF CATV, regardless that it is analog, you can not do it on multimode fiber. Multimode is good for short distances with certain signals, like IP or Video.

However with RF you can only use it with single mode fiber. That could be why you're having a tough time finding a solution, it's not possible.

If you look in our CATV over Fiber products,You will see every single piece of equipment is listed as only being able to work with single mode fiber whether it's HD QAM / ATSC or just SD NTSC Analog.

Generally speaking the only solution here is to pull new fiber.

Question:

I am working with a customer who is looking at replacing a large section of a Coaxial CATV system they have in place. Instead of replacing all the old coax and RF line extenders, I would like to look at options for utilizing fibre along the 300 yard – 600 yard runs. Looking at your website this is kind of your cup of tea.

Does your company ship to Canada? We are in north-west BC. I would be looking for 1 RF-Fibre converter and then approx. 5 receivers to convert back to CATV for the different buildings on site.

Let me know if you are interested in providing me with a solution and I can get you some more information.

Answer:

Yes, this is one of our specialties.

So in this case if you need a distribution system for 1 Transmitter and 5 Receivers with all relatively short runs, these are the pieces of equipment that you would need.

At least an 8mW Transmitter with enough power to get through a fiber coupler that's 1x8

https://thorbroadcast.com/product/8-mw-catv-rf-over-fiber-tx-45-870-mhz.html

Fiber Splitter 1x8

https://thorbroadcast.com/product/1-x-2-to-1-x-128-fiber-optic-couplers.html/226

Receivers, we offer a variety, rackmount, compact, or compact with higher RF output power

https://thorbroadcast.com/product/thor-fiber-optical-mini-ftth-rf-catv-cable-tv-receiver-8230.html

https://thorbroadcast.com/product/optical-mini-node-catv-rf-receiver-with-return-path-8230.html

All of our CATV over Fiber equipment can be found here if you'd like to browse: https://thorbroadcast.com/products/cable-tv-catv-rf-45-900mhz

You need to make sure of two things.:

1- you have single mode fiber

2 - you have SC/APC connectors, if you don't you need to purchase some jumpers for conversion/ we carry all varieties

https://thorbroadcast.com/products/fiber-jumpers-cables-attenuators

Question:

I am installing a fiber run for a few Comcast cable boxes at a job site. We purchased a CATV RF Fiber Transmitter, Model No. F-RF-TX-MN-2MW. We also purchased a CATV RF Optical Receiver, Model No.F-RF-RX-MN-2. I am testing offsite before the install with a Cox box because they are in a similar frequency range. Im testing with a short 3 meter cable, but can't get the Cox box to load its content. Since I'm using a short cable, is it possible that I need a signal attenuator?

Answer:

Are you trying to get it to work with a Cable TV Set-Top Box (STB)? There might be a couple of things to check:

Please measure the RF input power. It needs to be between 15–30 dBmV.
Additionally, many cable companies use a return path (5–45 MHz) in the reverse direction for communication and registering the box with the cable TV headend.

Please perform the following test:

Connect the STB directly to the coax cable (bypassing the optical equipment) and check if you receive content.
Without removing power from the STB, connect it through the Optical TX and RX units.
If it works in this setup, it means your system requires bi-directional RF:
- Forward path: 45–1000 MHz
- Return path: 5–45 MHz

If that's the case, you will need this unit:

F-RFoF-TX/RX

https://thorbroadcast.com/product/coax-cable-bi-directional-catv-rf-transmitter-and-receiver-over-fiber-8230.html

Question:

Apologies for our ignorance, as we're just trying to solve a problem for a customer, but we don't normally support this area.

The full story: A customer's coaxial line from the distribution comm closet to their specific apartment was cut and we're unable to run a new line. This coaxial provides their apartment with the Xfinity RF DOCSIS for internet and we're trying to find some way to reconnect them. There is a single SC fiber run still connected and a single Cat 5e.

Xfinity has denied any responsibility for the line inside the building after distribution. Are there any solutions for this on a single SC fiber run or Cat 5e?

Answer:

That makes sense — we do have a solution for this:

F-RFoF-TX/RX – (TX + RX kit / both ends)
https://thorbroadcast.com/product/coax-cable-bi-directional-catv-rf-transmitter-and-receiver-over-fiber-8230.html

Please note: two single-mode fiber strands are required.
The fiber optic interface is SC/APC (green, angled polish). If you do not have SC/APC fiber, please use SC/PC to SC/APC conversion patch cables.

Also, an RF spectrum analyzer will be very helpful during installation, since the optical transceivers require an RF input level of +15 to +25 dBmV. In many cases, the modem output level needs to be adjusted to meet this RF window (either internally or externally using passive attenuators).

Please let me know if this is clear