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H-RF-MET is designed to quickly measure Cable CATV RF signals or signals from off-air ATSC antennas within the frequency range of 5-870 MHz.
CATV RF transmission over coax can pose various challenges due to RF losses in coaxial networks. dB losses can occur due to CATV RF splitters as well as the length of coaxial cable used. Different frequencies experience different losses in coaxial cables, and it also depends on the type and rating of the coaxial cable.
Having a meter during Coax RF installations is highly beneficial as it allows you to check the strength of the CATV RF signal, ensuring it is sufficient for detection by the TV's tuner. An RF meter also saves significant troubleshooting time by identifying any video imperfections and ruling out the possibility of dB being too low or too high in RF power
Example on how to troubleshoot a Coaxial Network:
Modern TV's have a relativly wide RF tuner sensitivity, which can receive RF from 0 to 30dBmv, a signal below or above that range shows as not readable, the tuner can't find the program.
Modulator outputs are usually around +40dBmv, the coax has its own RF insertion loss and it depends of the RF channel frequency. Distance and Coax Cable Type are often the disruptors of seemless installs.
The biggest loss is usually related to the RF Splitters and RF TAP's , which have their own losses.
This is a link to RF splitters where you can find common losses.
If the measured level by the TV's are between 0 to 30dbmv, TV will display the Video, if it's higher then an attenuator is needed, if too low then an RF amplifier is needed.
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H-SP-1x2 -4.5db loss
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H-SP-1x4 - 7db loss
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H-SP-1x8 12db Loss
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H-SP-1x16 12db loss
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H-SP-1x12 -14.5db loss
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H-SP-1x24 18db Loss
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This is a link to our Amplifiers
H-RF-AMP-40  |
H-RF-AMP-40-RM  |
H-RF-MET
| Frequency Range : | 47MHz ~ 870MHz |
| Channel: U.S | Standard Channel USA STD-CATV/U.S. digital standard channels USA STD-CATV DVBC-ANnex A / B |
| Frequency accuracy: | ± 50 * 10E-6 (20°C ± 5°C) |
| Resolution: | 50KHz |
| Measurement bandwidth: | 280KHz ± 50KHz |
| Level measurement | |
| Measuring range: | 30dBuV ~ 120 dBuV |
| Measurement accuracy: | ± 2dB (20°C ± °C) |
| Resolution: | 0.5dB |
| Detection method: | peak detection |
| Input Impedance: | 75ω (unbalanced, F-type connector) |
| Carrier-to-noise ratio measurement | |
| Measuring range: | 20dB ~ 50 dB |
Rackmount 19" Power Supply 16 port 12V 1.5A DC
Universal 16 port 12V 1.5 DC Power Supply, standardized use for an application that many 12V devices need to be powered. Used for Cable TV STB's, HDMI and SDI Modulators. Eliminates the need for individual power supplies, 19" rack mount form factor makes it easy for clean headend installations.
Outdoor Electrical Box Waterproof Nema 4 Enclosure 16x11x6 Fan Vented Dust Screen
The white weatherproof electrical box is made of ABS plastic material, which has great high impact-resistance and electrical insulation capability. Equipped with a 12v fan and 2 sufficiently large heat dissipation holes on both sides of the enclosure.
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