3.3 REAR CARD CONFIGURATION
The rear interface card for the Model 2065/66RC is equipped with
two female UD-26 connectors: one for each port. This card has one
configuration jumper (JB4). Figure 4 (below) shows the location of this
jumper on the PC board.
As Figure 5 (below) shows, jumper JB4 has two possible
positions: strap covering posts 1 & 2, or strap covering posts 2 & 3.
The orientation of the jumper with respect to pin positions is shown in
Figure 4 (above).
SGND & FRGND (JB4)
In the connected position, this jumper links UD-26 pin 7 (Signal
Ground) and frame ground. In the open position, pin 1 is “lifted” from
frame ground.
JB4
Position 1&2 = SGND (UD-26 pin 7)
and FRGND Connected
Position 2&3 = SGND (UD-26 pin 7)
and FRGND Not Connected
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Figure 5. Possible function card strap positions
Figure 4. Rear card jumper location
JB4
(peg 1 toward
bottom of card,
peg 3 toward top
of card)
4.0 INSTALLATION
This section describes the functions of the Model 1000R16P rack
chassis, tells how to install front and rear Model 2065/66RC cards into
the chassis and provides diagrams for wiring up the interface
connections correctly.
4.1 THE MODEL 1000R16P RACK CHASSIS
The 1000R16P Rack Chassis (shown in Figure 6, below) has
sixteen short range modem card slots, plus its own power supply.
Measuring only 3.5" high, the 100016RP is designed to occupy only 2U
in a 19" rack. Sturdy front handles allow the 1000R16P to be extracted
and transported conveniently.
4.1.1 THE RACK POWER SUPPLY
The power supply included in the Model 1000R16P rack uses the
same mid-plane architecture as the modem cards. The front card of
the power supply slides in from the front, and the rear card slides in
from the rear. They plug into one another in the middle of the rack.
The front card is then secured by spring loaded thumb screws and the
rear card by conventional metal screws.
(continued)
8
Figure 6. Model 1000R16P Rack Chassis with Power Supply
WARNING!
There are no user-serviceable parts in the
power supply section of the Model 2065/66RC. Voltage
setting changes and fuse replacement should only be
performed by qualified service personnel. Contact Patton
Electronics Technical support at (301)975-1007 for more
information.
