C
ONVERTER
RS-232, RS-422, RS-485
O
PERATION
M
ANUAL
IOA55-1c
August
2009
5
1.3. Symbol Marking:
TR – 55.W – X – Y (T)
Meaning of the abbreviations used:
MM – intended for cooperation with a Multi-Mode optic fibre
SM – intended for cooperation with a Single-Mode optic fibre
WDM - this version cooperates with a single fibre using the WDM 1310nm/1550nm
technology (Wavelength Division Multiplexing)
1310nm – transmitter working at the 1310 nm wavelength, receiver working at the 1310nm
wavelength
1310/1550nm – transmitter working at the 1310 nm wavelength, receiver working at the
1550nm wavelength
1550/1310nm – transmitter working at the 1550 nm wavelength, receiver working at the
1310nm wavelength
T - means the version of the converter which works
in extended temperature: -40C ... +75 C
device version:
1 – terminal converter (1 optical port)
2 – pass-thru mode converter (2 optical ports)
1-version with RJ-45 connector
2- version with the srew connector
optical interface type:
2 – 1310 nm SM/MM
5 – WDM 1310/1550 nm SM (only terminal)
6 – WDM 1550/1310 nm SM (only terminal)
7 – WDM 1310/1550 nm SM and 1550/1310 nm SM
