4
X
E1/G.703 P
LESIOCHRONOUS
M
ULTIPLEXER
O
PERATING
M
ANUAL
IOA77-1F
3
May 2007
1.4 Symbols and available versions
Haul:
1 - short (SH)
2 - long (LH)
TM - 77.1 - X - Y
Type of optical transmitter:
2 - 1310 nm MM
3 - 1310 nm SM
4 - 1550 nm SM
5 - WDM 1310/1550 nm SM
6 - WDM 1550/1310 nm SM
Production version
Type of mechanical design:
TM - desktop version
MD - rack version
List of abbreviations:
SH – short haul
LH – long haul
MM – designed for operate with multi-mode fiber
SM - designed for operate with single-mode fiber
WDM – version to operate with single fiber, using WDM (Wavelength Division Multiplexing)
technology
1310 nm - transmitter working with 1310 nm wavelength, receiver working with 1310 nm
wavelength
1550 nm - transmitter working with 1550 nm wavelength, receiver working with 1550 nm
wavelength
1310/1550 nm - transmitter working with 1310 nm wavelength, receiver working with 1550 nm
wavelength
1550/1310 nm - transmitter working with 1550 nm wavelength, receiver working with 1310 nm
wavelength
E1 multiplexer is available in two versions:
•
as a desktop version in a metal casing, symbol TM-77.
•
as a card installed in TM-72 telecommunication rack to cooperate with another TM-72 or
MD-77 card.
Symbol example:
TM-77.1-3 – a desktop multiplexer equipped with a laser transmitter of 1310 nm wave
length.
