TQQ/1M is an industrial synthetic optical fiber repeater with Versatile Link connector and RS485 output, powered by a low voltage supply. It can be used to increase the transmission distance of a serial communication, or to isolate different branches of a network. Thanks to its compact 2-module DIN rail housing, it can be easily mounted in an electrical panel. It accepts a wide range of AC and DC voltages, and it is completely Plug&Play, since it does not need any driver nor DIP switch. This optical fiber serial repeater is Half Duplex and it automatically detects data direction and transmission data rate up to 250 kbps, so it can be easily installed in any new or existing network.
TQQ/1M is composed of a master optical section, where the received signal is repeated to the slave optical section. The signal is simultaneously converted and transmitted to the slave RS485 electrical section. Any response packet received from the slave terminals is transmitted back to the master terminals. However, the response packets are not converted by the slave RS485 electrical section.
Optical repeaters are typically used to integrate a section of optical fiber in a RS485 low voltage network, in order to increase the transmission distance. They isolate the different branches of a network from electromagnetical interferences (EMI) and voltage surges, like the different floors of a hotel, or various branches of a solar power system. Electromagnetical interferences are fairly common in these environments, so it is good practice to integrate two or more optical-electrical converter to guarantee signal integrity. Furthermore, there are environments where electrical devices are strictly forbidden, such as pools, saunas, fire-risk buildings, so optical fiber is mandatory.
Optical-electrical serial repeaters are available with different combinations of serial standard and optical fiber, or as simple converters. TVV/1M and TSS/1M repeaters for example accept glass fiber with Bayonet connector, or synthetic optical fiber with screw connector, respectively. TQQ/1F and TQQ/1R are suitable for different serial standards, that is RS422 and RS232. Industrial serial converter CMM/1Q can be used to terminate an optical bus. Every combination of serial standard, optical fiber, and power supply, is however available, while special requests (such as higher data rates) can be made via the contact form.