“1+1” host/backup integrated
coaxial switcher
Product Description
The ZHC926I series host/backup switching integrated machine is a special equipment designed for the "1+1" master/backup switching system of broadcast and television transmitting stations, and is used to control the manual or automatic switching of the host/backup transmitter. Compared with the traditional host-backup switching equipment or system, the host/backup switching integrated machine has the advantages of a built-in coaxial switcher, no need transmitter communication protocol, it’s small size and convenient for installation.
In automatic switching mode, the all-in-one will automatically detect the working status of the host transmitter. When the output power of the host is lower than the preset switching threshold, the all-in-one will control the built-in coaxial switch and the power supply of the host and backup transmitters, and automatically switch to the backup The transmitter works to achieve uninterrupted broadcast.
In manual switching mode, you can manually operate through the panel switch to select the host or backup transmitter to complete the switching control of the coaxial switch and the power of the host and backup transmitters.
The ZHC926I series host and backup switching integrated machines are divided into two RF power levels: 300W and 1KW.
ZHC926I-300W front & back panel
ZHC926I-1KW front & back panel
Technical Features
l The switching threshold is calibrated by the user
l LCD real-time display of the working status of the host and backup
l Built-in coaxial switcher, easy to install
l The function of maintaining the host/backup state after power failure
l Remote monitoring of all-in-one machine can be realized through remote interface
l Using high-speed MCU processor control, stable and reliable performance
l Two power levels: 300W (N connector, 220V power supply for transmitter)
1KW (7/16” connector, transmitter 220V or 380V power supply)
l Applicable to any brand transmitter, without transmitter communication protocol
Working Principle Diagram
Main Technical Specifications
Electrical parameter table
Transmitter power |
ZHC926I-300W |
0～300W (Transmitter 220V) |
ZHC926I-1KW |
0～1KW (Transmitter 220V or 380V) |
Host transmitter RF detection output range |
-5～+10dBm |
Switching time |
User-defined |
Communication Interface |
RS232; TCP/IP; SMS modem |
Power supply |
AC220V/50Hz |
Power consumption |
20W |
Physical properties table
RF input detection interface |
BNC |
RF input and output |
ZHC926I-300W: N type |
ZHC926I-1KW: 7/16”DIN female |
RS232 interface |
DB9 |
SMS modem interface |
DB9 |
Ethernet interface |
RJ45 |
Chassis standard |
19 inch |
Chassis size |
2U(440mm×88mm×445mm) |
equipment weight |
3.5KG |
Operating environment temperature |
—15~+50℃ |
Relative humidity |
＜95% |
