16
LOCAL MUX-6
Figure 3-2. Installation of a Unit in a 19" Rack.
3.4 Electrical Installation
In the following discussions, refer to
Figure 3-3
(rear panel).
3.4.1 AC P
OWER
AC power is supplied to the Local Mux-6 through a 5 feet (1.5 m) cord
terminated by a grounded 3-wire plug. The AC cord is fused at the rear
panel AC power receptacle of the unit. A slow-blow fuse of 0.1A is required
for 230V operation, and a 0.2A fuse is required for 115V operation.
3.4.2 S
UB
-
CHANNELS
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 (CD)
are required. Refer to
Figure 3-4
for the pinout of the CD. 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).
