Hálózati elemek
Transzformátorok
Twisted Pair Cable Video Transmitter TRN-1/400
Kód: M1668
View of the device
Front view
The TRN-1/400 transmitter allows to power a camera with thermostat and transmit video signal from the camera by twisted pair cable (UTP, FTP). Video signal from the camera is put to the TRN-1/400 transmitter input, and transmitted by twisted pair cable to the TRO-4/400 M1670 receiver or the TRO-1/400 M1669 receiver. Both he transmitter unit and the receiver unit adapt 75 ohm coaxial cable impedance to twisted pair cable impedance. It guarantees video signal transmission up to 400 meters.
The TRO-1/400 M1669 receiver supplies un-stabilized voltage (max. 40V DC) to twisted pair cable, and the TRN-1/400 transmitter converts it into 12V DC stabilized voltage. It allows to power the camera and the thermostat. Assuming that the power consumption of the camera is 250mA, and 500mA for the thermostat (TT-12E) , the voltage can be sent over the following distances:
| LOAD | MAXIMUM DISTANCE AT -24V AC | MAXIMUM DISTANCE AT -29V |
| 1 camera 250mA | 1080 meters | 1600 meters |
| 1 camera 250mA + thermostat 500mA | 260 meters | 500 meters |
A video amplifier should be used over distances longer than 400m.
Specifications
| Name | TRN-1/400 transmitter |
| Code | M1668 |
| Video Bandwidth | up to 50 MHz |
| Video Insertion Loss | 0.5 dB ( for f=5 MHz ) |
| Video Output Impedance | 75 ohm |
| Twisted Pair Impedance | 100 ohm |
| Connector type of the coaxial line | BNC socket |
| Connector type of the symmetrical line | RJ-45 plug (8 pin, 4 pair) |
| MAX input voltage | DC 45V |
| Output voltage | DC 12V |
| MAX output current (12V) | 900 mA |
| Weight | 94 g |
| Dimensions: | 117x64x30 mm |
Diagram of connecting the device to 4 cameras without thermostats
Diagram of connecting the device to a camera without a thermostat
Diagram of connecting the device to a camera with a thermostat
In all applications the RJ-45 plug is connected, in accordance with T568B standard.
KÖNYVTÁR ROVAT
ÚJAK KÖNYVTÁRUNKBAN
ÉRDEMES ELOLVASNI
A WLAN (Wireless Local Area Network) egy olyan vezeték nélküli adatátviteli technológia, amely kielégítő paraméterek mellett és viszonylag alacsony... bővebben »