15
16
DTE Shield (Pin 1) & FRGND (JB3)
In the connected position, this strap links DB-25 pin 1 & frame
ground. In the open position, pin 1 is “lifted” from frame ground.
JB3
Position 1&2 = DTE Shield (Pin 1) and FRGND Connected
Position 2&3 = DTE Shield (Pin 1) and FRGND Not Connected
SGND & FRGND (JB4)
In the connected position, this strap links DB-25 pin 7 (Signal
Ground) and frame ground. In the open position, pin 1 is “lifted” from
frame ground.
JB4
Position 1&2 = SGND (pin 7) and FRGND Connected
Position 2&3 = SGND (Pin 7) and FRGND Not Connected
4.0 INSTALLATION
This section describes the functions of the Model 1001R14P rack
chassis, tells how to install front and rear Model 1065RC cards into the
chassis, and provides diagrams for wiring the interface connections
correctly.
4.1 THE MODEL 1001R14P RACK CHASSIS
The Model 1001R14P Rack Chassis (Figure 12) 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.
Switching the Power Supply On and Off
The power supply on/off switch is located on the front panel.
When plugged in and switched on, a red front panel LED will glow.
Since the Model 1001R14P is a “hot swappable” rack,
it is not neces-
sary for any cards to be installed before switching on the power supply.
The power supply may be switched off at any time without harming the
installed cards. Be sure power is off before power module card is
removed.
Figure 12. Model 1001R14P Rack Chassis with power supply
