The TR-8H/DC/R19 is designed to video signals transmission and power supplying via twisted-pair cable (UTP, FTP). The device adapts the impedance of coaxial cable 75Ω to the impedance of symmetrical line, ensuring transmission of video signal up to 400m @ PAL (twisted-pair cable category 5) and eliminates asymmetric interferences. Video signal is sent over one pair of a twisted-pair cable, the remaining three pairs are used for supplying power.
The device consists of 2 independent power modules (see diagram below) which allows for various configurations. 12V DC power sending allows to use the TR-1M/70 and TR-1PV/70. Some part of outputs can also be powered by 12V, the others eg. by 40V what enables power sending for long distances (application with TRN-1/400, ZK-40/6 or ZK-40/16).
Front panel view:
View of the single module:
Schematic diagram (principle of operation):
1) camera powering2) VideoTR - TransformersBNC - BNC socket
Example of the connection diagram with using different power voltages for individual modules:
1) TR-1M/702) TR-1PV/703) TR-1AC/DC4) TRN-1/4005) DC 12V power adapter6) 24V AC transformer (24V/2A/TRF)7) ZK-40/68) Twisted-pair cable9) RJ-45 plug10) Video signal11) 12V DC camera powering12) DATA connection13) (12V) Speed Dome camera
Twisted-pair cable connection wiring sequence for TR-1M/70:
Wiring sequence inside the RJ-45 connectors for TR-1PV/70:
Wiring sequence inside the RJ-45 connectors for TR-1AC/DC:
Wiring sequence inside the RJ-45 connectors for TRN-1/400:
Amplitude - frequency response - 2 transformers connected briefly (RF PWR OUT = 0 dBm):