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?

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

Mini transmisor de RF CATV para QAM o Atsc, DVB-T o NTS RF de transmisión de fibra oiver

Descripción

El Thor de Fibra Óptica Mini RF CATV 45-900Mhz Transmisor se utiliza principalmente para la transmisión de larga distancia de la fibra óptica de transmisión de RF CATV - Analógica o digital QAM o ATSC de Televisión Digital TV, teléfono y transmisión de datos. Es de aplicación para la transmisión de se?al digital de vídeo y datos en el cable de la televisión y de la industria de las comunicaciones. El alcance de transmisión puede variar de 5 km a 30 km. Viene equipado con un avanzado láser DFB que fácilmente proporciona expectionally de alto rendimiento y potencia de RF, así como el procesamiento automático de la tecnología desarrollada por nuestra empresa. Por último se ha incorporado un micro-ordenador que controla automáticamente el sistema de control y garantiza un excelente rendimiento de los equipos.

Caracteristicas

45 -1000MHz de trabajo ancho de banda
De alto rendimiento de la DFB coaxial láser que tiene una gran vinculación de rendimiento y de salida estable
Avanzadas de procesamiento de la CPU y con una función de sistema de vigilancia para supervisar el estado de operación que conduce a una vida más larga del laser
Baja pérdida de potencia de dise?o(menos de 8W), lo que crea una versión de baja temperatura de funcionamiento

NOTA IMPORTANTE*** (es muy importante a la interfaz de nuestra unidad con SC/APC - Ángulo de Pulido del Conector para evitar los reflejos de la luz.

Si la fibra se termina con el SC, ST, FC /PC conector plano, es necesario utilizar una óptica puente de PC tipo SC/APC para la correcta conversión.

Dibujos

Application Examples

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

Vídeo

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.

Selección de modelo

F-RF-TX-MN-2Mw - 2Mw láser de hasta 10 Km sobre fibra

F-RF-TX-MN-10Mw - 10Mw láser de hasta 40 km sobre fibra

Accessories & Upgrades

Recommended Accessory: F-PLC Passive Fiber Optic Splitter

The Thor F-PLC passive fiber optic splitter with SC/APC connectors is an ideal accessory for CATV RF optical transmitters, allowing one optical signal to be split and routed to multiple locations over fiber. Available in 1x2 to 1x64 versions, it is perfect for RF over fiber distribution systems in hotels, campuses, apartment buildings, and other multi-location installations.

Learn more about Thor F-PLC Splitters →

Especificación

Elemento	Unidad	Especificación técnica
La longitud de onda	nm	1310 nm ? 20 / 1550 nm ? 20
Tipo de láser		Laser de DFB
Óptica tipo de modulación		Directo óptico de la modulación de la fuerza
Óptica tipo de conector		SC/DE APC NOTA IMPORTANTE* (es muy importante a la interfaz de nuestra unidad con SC/APC - Ángulo de Pulido del Conector para evitar los reflejos de la luz. Si la fibra se termina con el SC, ST, FC /PC conector plano, es necesario utilizar una óptica puente de PC tipo SC/APC para la correcta conversión.**
Rango de frecuencia	MHz	45-862/1000
RF nivel de entrada	dBuV	72~82
Planitud de la banda	dB	?0.75
La resistencia de entrada de Rf		75
La entrada de la pérdida de reflexión	dB	?16
Link C/N	dB	?51
Link C/CSO	dB	?60
Link C/CTB	dB	?65
AGC controlar el rango de	dB	?5
MGC controlar	dB	0~10
Fuente De Alimentación	V	DC 12 V/1 A
La Pérdida De Potencia	W	? 8
Dimensión	mm	140 x 90 x 26

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:

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.

Answer:

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?

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.

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

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.

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

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

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

Answer:

The transmission distance depends on the transmitter optical output power and the operating input range of the optical receiver. For this unit, the transmitter optical output is approximately +2 dBm. If the receiver sensitivity is approximately -5 dBm, the total optical budget is about 7 dB.

This means the total allowable loss in the optical link — including fiber attenuation, patch panels, connectors, and any passive optical components — should remain within that 7 dB budget.

As a general reference, single-mode fiber at 1310 nm has a typical loss of about 0.35 dB/km. Additional losses must also be considered for optical connectors, patch points, and splice or panel transitions.

Documentos

F-RF-TX-MN-2mW TECHNICAL DATASHEET

tx-rx-optical-mini-catv-rf.pdf

catv-rf-conversions-of-power-chart-75o-dbmv-dbuv-dbm-8230

Disponibilidad:	En stock	Condición:	nuevo
Envío:	starting at $0.00	Garantía:	2 Years

Thor Óptico Mini Transmisor de RF CATV 45-1000Mhz

Descripción

Caracteristicas

Dibujos

Application Examples

Vídeo

Selección de modelo

Accessories & Upgrades

Recommended Accessory: F-PLC Passive Fiber Optic Splitter

Especificación

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

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

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

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?

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?

Question: How do you calculate the Optical Budget and Transmission Distance ?

Documentos