4.3.1 RS-232 CONNECTION
The RS-232 port on the rear card of the Model 1110RC is wired as
a DCE, and uses a female HD-26 connector. The HD-26 is an alternate
connector according to the EIA RS-232E specification, and the pin-out
is the same as a standard DB-25. Pin 26 is not used.
You will need an interface cable to connect the Model 1110RC to
your RS-232 device. Assuming your RS-232 device is a DTE (PC,
host, terminal, workstation, etc.), the cable should be wired
straight
through
. You may either provide your own cable, or you may purchase
an HD-26 to DB-25 cable from Patton Electronics Company. Please
call the Patton Sales Department at (301) 975-1000 for price and
delivery information.
4.3.2 FIBER CONNECTIONS
The Model 1110RC is designed to work with the self-powered
Model 1110, or with another Model 1110RC. In either case, you will
need one unit at each end of a dual fiber cable. This cable connects to
the Model 1110RC using either ST or SMA connectors. Figure 5
(following page) shows a close-up of each of these connector types.
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Figure 5.
Close up of ST and SMA connections
ST
SMA
alignment pin
faces down
Notice!
Any terminal cable connected to the Model 1110RC
must be shielded cable, and the outer shield must be 360
degree bonded–at both ends–to a metal or metalized backshell.
5.0 OPERATION
Once you have configured each Model 1110RC and connected the
cables, you are ready to operate the units. This section describes the
LED status monitors and power-up procedure.
5.1 LED STATUS MONITORS
The Model 1110RC features nine front panel status LEDs that
indicate the condition of the modem and communication link:
•
The green “PWR” LED glows when power is applied to the modem
card through its mid-plane chassis connection.
•
The green “TD” and “RD” indicators blink to show positive state
data activity. The Red “TD” and “RD” indicators blink to show
negative state data activity. Solid red indicates an idle state.
•
The green “RTS” and “CD” indicators glow solid to show the
control signal is on. The red “RTS” and “CD” indicators glow solid
to show the control signal is off. When the 1110RC is connected to
a DTE, RTS will glow green for an incoming signal on RS-232 pin
4. CD will glow green for an incoming signal from the line, and an
outgoing signal on RS-232 pin 8.
5.2 POWER-UP
There is no power switch on the Model 1110RC: Power is
automatically applied to the 1110RC when its card-edge connector
makes contact with the chassis’ mid-plane socket, or when the chassis’
power supply is turned on.
Note: The 1110RC is a “hot swappable”
card—it will not be damaged by plugging it in or removing it while the
rack is powered up.
When the local and remote units are
both
powered up, and are
passing data
normally
, the following LED conditions will exist:
• PWR = green
• TD & RD = flashing red and green
• RTS & DCD = green
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