Specifications

16
LOCAL FIBER MUX-6
3.4.2 S UB
-C HANNELS
Six D-type 25-pin female connectors on the rear panel enable connection to
the unit. Detailed information about the signals present at these connectors
is given in Table 3-1. For twelve-channel operation, channel doublers are
required. Refer to Figure 3-4 for the pinout of the channel doubler. For six-
channel operation, with full duplex data and end-to-end control signals on
each channel, refer to Figure 3-5 (DTR to DSR control signal) or to Figure 3-6
(RTS to DCD control signal).
3.4.3 M AIN C HANNEL
Two SMA connectors are located on the rear panel, marked TX and RX.
Remove the protective caps from the connectors and keep them in a safe
place for later use. Clean both connectors to remove dust accumulated
during shipment (using ethanol or similar cleaning fluid). Connect the
transmit fiber to the TX connector and the receive fiber to the RX connector,
and secure the fastening nuts. At the remote unit, the transmit fiber must be
connected to RX and the receive fiber to TX.
WARNING
Do not overtighten the fiberoptic connectors.
Figure 3-3. Local Fiber Mux-6 Rear Panel.
CH 1/7 CH 2/8 CH 3/9
CH 4/10 CH 5/11 CH 6/12
MAIN CHANNEL
FUSE
~115V/O.2AS.B.
RX TX
Unscrew these screws
to pull out circuit board.