3.0 CONFIGURATION
This section describes the location and orientation of the Model
1205RC’s configuration switches and jumpers, and provides detailed
instructions for all possible settings.
The Model 1205RC uses a combination of DIP switches and
jumpers that allow configuration to an extremely wide range of applica-
tions. Designed around a mid-plane architecture, the Model 1205RC
incorporates both front and rear cards. Configuration of both may be
necessary. The switches/jumpers are accessible when the cards are
slid out of the rack chassis. Once configured, the Model 1205RC is
designed to operate transparently, without need for frequent re-config-
uration: just set it and forget it!
3.1 FUNCTION CARD CONFIGURATION
All switches and jumpers are located on the Model 1205RC’s PC
board. To access the PC board, loosen the two thumb screws on the
front panel and slide the card out of the chassis. As Figure 1 (below)
illustrates, the DIP switches are located on the “daughterboard” and
the jumpers are located on the main PC board.
3.1.1 FUNCTION CARD DIP SWITCH
The Model 1205RC has one four-position DIP switch mounted on
the daughterboard. Figure 2 (following page) shows the numbering of
the individual switches and their “ON/OFF” positions relative to the
daughterboard.
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Figure 1.
Model 1205RC board, showing location of switches/jumper
5.2 POWER-UP
There is no power switch on the Model 1205RC: Power is auto-
matically applied to the 1205RC when its card-edge connector makes
contact with the chassis’ mid-plane socket, or when the chassis’ power
supply is turned on.
Note: The 1205RC 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 Model 1205RC is powered up, and both ports are pass-
ing data
normally
, the following LED conditions will exist:
• PWR = green
• TD = blinking red and green
• CD = green
• DTR = green
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