Figure 5 (below) shows how a remote daisy chain set-up might look. It
is also possible to combine this remote daisy chaining method with the
local daisy chaining method described in Section 4.4.1.
To wire up a remote Model 1000CC daisy chain connection, follow
these steps:
1) Using a straight through modular cable, connect the serial
port of the RS-232 terminal to Port A1 of the local Model 1000CC.
2) Using a
straight through modular cable, connect Port B1 of
the local Model 1000CC to port A1 to the RS-232 port of a Patton
asynchronous short range modem card (ex. the Model 1000RC).
3) Following the instructions in the User Manual for the particular
Patton short range modem card you are using, connect the “line”
port of the local short range modem card to “line” port of the remote
short range modem card. This connection should be made in the
normal manner, using twisted pair cable.
4) Connect the serial (RS-232) port of the remote Patton short
range modem card to Port A1 of the remote Model 1000CC. Since
both ports are configured as DCE, you will need to use a modular
RJ-45
crossover cable pinned in the following manner:
RJ-45 Crossover Cable (4-Wire)
SIGNAL
PIN#
PIN#
SIGNAL
DSR
2-----------------------4
DTR
DTR
4-----------------------2
DSR
RD
6-----------------------7
TD
TD
7-----------------------6
RD
GND
5-----------------------5
GND
5.0 OPERATION
Once you have configured each Model 1000CC and connected the
cables, you are ready to operate the unit. Section 5.0 describes the
LED status monitors, the power-up procedure, and use of the Model
1000CC.
5.1 LED STATUS MONITORS
The Model 1000CC features five front panel LEDs that indicate the
condition of the modem and communication link. These LEDs operate
as follows:
•
The green “PWR” LED glows when power is applied to the
modem through its mid-plane chassis connection.
•
The green “TD” and “RD” LEDs show positive state data
activity. The red “TD” and “RD” LEDs show negative state
data activity. A solid red light indicates an idle state.
5.2 POWER-UP
There is no power switch on the Model 1000CC: Power is
automatically applied to the 1000CC when its card-edge connector
touches the chassis’ mid-plane socket, or when the chassis’ power is
turned on.
Note: The 1000CC is a “hot swappable” card—it will not be
damaged by plugging it in or removing it while the rack is powered up.
5.3 CONTROLLING CSU/DSU CARDS
The Model 1000CC has one primary purpose: to receive instructions
from an RS-232 terminal and pass them to one or more Patton
CSU/DSU rack cards through the midplane bus of a Patton rack chassis
or Cluster Box. Once the Model 1000CC is installed and configured
properly, you should refer to Section 4.4 of the Patton Model 2500
Series Manual for information about control port configuration and
control port commands.
Note: Each CSU/DSU card has its own address, which is set using the
Address Rotary Switches on the card. In order to receive instructions
individually, each card must have a
unique address (00 - 98). Cards set
to “99” will listen to group instructions, but will not be able to discern
instructions individually.
9
10
Figure 5. Remote daisy chain
