4.0 INSTALLATION
This section describes the functions of the Model 1001R14P rack
chassis, tells how to install front and rear Model 1001CC cards into the
chassis and provides diagrams for wiring up the interface connections
correctly.
4.1 THE MODEL 1001R14P RACK CHASSIS
The Model 1001R14P Rack Chassis (Figure 3, below) has sixteen
short range modem card slots, plus its own power supply. Measuring
only 3.5” high, the Model 1001R14P is designed to occupy only 2U in a
19” rack. Sturdy front handles allow the Model 1001R14P to be
extracted and transported conveniently.
4.1.1 THE RACK POWER SUPPLY
The power supply included in the Model 1001R14P 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 thumb screws and the rear card by
conventional metal screws.
Powering the 1001R14P Rack
The power supplies that come with the 1001R14P rack system are
equipped with a power entry connector on the rear card. The power
supplies are
Hot-Swappable. Therefore, you are not required to
remove power before removing or re-inserting cards into the rack.
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SGND & FRGND (JB5)
In the connected (closed) position, this strap links signal ground
and frame ground. In the open (disconnected) position, pin 1 is “lifted”
from frame ground.
JB5
Position 1&2 = SGND and FRGND Connected
(Default)
Position 2&3 = SGND and FRGND Not Connected
DTE as DSR or RI (JB6 & JB7)
Because this rear card is designed to function in more applications
than the Model 1001CC, this jumper must be installed only in one
position. Place the jumper across pins 1&2 so that the terminal (DTE)
sees DSR as high when the DTE raises DTR. The other positions,
across pins 2&3, are for Ring Indicate as defined by EIA/TIA-561. The
RI function is irrelevant (and on the Model 1001CC is also
disconnected) and can cause improper operation if the jumper is
installed incorrectly.
JB6 & JB7
Position 1&2 = DSR
(default)
Position 2&3 = N/A
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Figure 3. Model 1001R14P Rack Chassis with power supply
