Справочник Пользователя для METRObility Optical Systems Gigabit "twister" and SONET "twister"

Fiber Optic Interface
Multimode ports are labeled MM. Singlemode ports are labeled SM.
Extended distance ports are labeled LH (Long Haul) or ELH (Extended
Long Haul). Each fiber port provides an SC or LC connector. For informa-
tion about the cable lengths supported by each model, refer to the table in
the 

 section.

When making connections, be sure that the transmit (TX) optical conductor
of the “twister” connects to the receive (RX) optical conductor of the
connected device; and be sure that the transmit (TX) optical conductor of
the device connects to the receive (RX) optical conductor of the “twister”.

Once power is applied to the unit, correct connectivity can be verified via
the LINK LED.

BWDM Interface
The bidirectional wavelength division multiplexed (BWDM) port provides
one singlemode SC connector that supports a maximum segment length of
20km. BWDM units must always be used in complementary pairs. That is,
a -1X or -AX must be connected to a -1X or -AY. The -1X and -AX units
are designed to transmit data at a wavelength of 1550nm and receive at
1310nm. Correspondingly, the -1Y and -AY units transmit data at 1310nm
and receive at 1550nm.

up to 20 km

Power is applied to the “twister” from the desktop power supply. The
power supply is equipped with an S760 hollow-type plug for insertion into
the DC jack located on the back of the unit and the standard IEC 320-type
AC power receptacle. All standalone units use a 100-240V universal
desktop power supply.

Connect the DC input jack located on the back of the “twister” before
connecting to the AC outlet.