Mind these five functions when you choose an HFC cable analyzer
We already know the CABLE RANGER’s unique feature: : They include RF and Fiber Optics in a single instrument (which makes them perfect as instruments for HFC networks). What other features put them one step ahead of all other measuring instruments?
What makes unique CABLE RANGER from any other HFC analyzer?
CABLE RANGER analyzers are designed for the installation and maintenance of hybrid CATV networks (HFC – Hybrid Fiber Coaxial). They are analyzers that embed both technologies (optical and coaxial). They are designed to communicate with the CMTS and also to work in through loop mode to take measurements in a totally transparent way of the communication between user’s cablemodems and the CMTS.
- Full band dual power measurement - In a heartbeat!
- DOCSIS ranging – No need for CMTS registering!
- The CABLE RANGER integrate their own cablemodem – not a commercial cablemodem
- Transparent cablemodem upstream analysis
- Auto identifying the network standard
Full band dual power measurement - In a heartbeat!
Two measurement bars in the main screen depict the total power in both the optical and RF bands. In other words: Just switch ON the equipment and look at the screen. It is possible to identify problems in the optical or in the coaxial networks at a glance. That’s a piece of cake!.
This is perfect for example to perform an early analysis of the network: No signal in the band, no time to loss trying to connect to a CMTS.
Power measurement bars of the optical fiber network (left) and of the coaxial RF network (right)
The CABLE RANGERs measure RF power from 20 to 70 dBmV (in the 5 to 2700 MHz band) and optical power from -45 to 10 dBm (in the 1100 to 1650 nm band).
DOCSIS ranging – No need for CMTS registering!What makes unique to the DOCSIS RANGING of the CABLE RANGER is the fact there is no need to register in the CMTS to display the communication channel status and...
- Manually choose the DOCSIS carrier to try to register at.
- Demodulate the OFDM carrier.
- Carry on a live display of the process of DOCSIS RANGING while the CMTS communication is taking place.
... therefore from the operator’s point of view there is no need to reconfigure the DOCSIS network to grant access to CABLE RANGER’s MAC.
What is DOCSIS RANGING?
It is a physical, two-way communication channel between the CMTS and a cablemodem in the DOCSIS network. This communication enables the CMTS to calibrate the cablemodems’ power and frequencies, as well as to indicate them the network parameters to ultimately allow or deny their registration in the DOCSIS network depending on the operator’s policies.
CABLE RANGER is the only tool that can demodulate the OFDM DOCSIS 3.1 carrier with no CMTS registration.
Another unique feature of the CABLE RANGER is the ability to display the OFDM constellation diagram.
RANGING process. Data is displayed live, as the communication between the CMTS and the CABLE RANGER is taking place.
The CABLE RANGER integrate their own cablemodem – not a commercial cablemodem
The built-in CABLE RANGER’s cablemodem is not a commercial cablemodem. Therefore it is free of any limitation that may inherit the measurement equipment that embeds a commercial cablemodem.
For example, it can display the DOCSIS RANGING process data even without registering in the DOCSIS network. This makes unnecessary to register the measurement equipment MACs in the access tables of the operators to enable the use of the CABLE RANGER in the DOCSIS networks.
- This is an advantage for the operators because they do not need to invest time setting up their networks to grant access to the CABLE RANGER MACs.
- And for the servicing companies it allows being free of homologation paperwork because they don’t need to request for access permissions for their equipment.
Transparent cablemodem upstream analysis
PROMAX CABLE RANGER includes as standard the through-loop connection. This is to say, a bypass between the user(s) cablemodem(s) and the CMTS. You can test the connectivity at ant point of the network without interrupting nor disturbing the data traffic.
Connect the CABLE RANGER HFC analyzer in through loop mode at any point in the network, between the CMTS and the user(s) cablemodem(s).
For example it is possible to analyze the whole upstream band to identify the burst signals coming from the cablemodems and distinguish them from the noise band. A suspicious noise level may indicate the wire is receiving RF interferences because of a physical problem in the network (connectors in poor conditions, industrial work, crossings, poorly twisted or damaged cables…).
Use the MAX/MIN hold to keep in the screen the higher signal levels that are not visible to the eye because of its speed.
Auto identifying the network standard
The CABLE RANGERs are able to scan the HFC network and to create a channel table containing just the channels featured in the network, detecting their transmission standard.
In addition, it is possible to create customized channel tables by modifying an existent channel plan or manually from scratch using the screen or the webControl function.
Automatic creation of channel tables with auto identification of the standard
PROMAX is a leading manufacturer of test and measurement systems, broadcast and TV signal distribution equipment. Our product lines include measuring instruments for cable TV, satellite TV, broadcast, wireless and fibre optics networks, FTTH and GPON analyzers. DVB-T modulators, IP streamers or IP converters (ASI, DVB-T) are among the company’s latest developments.