13
14
DTE as DSR or RI (JB6 & JB7)
Because this rear card is designed to function in more applications
than the Model 2085RC, this jumper must be installed only in one posi-
tion. 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 2085RC is also disconnected)
and can cause improper operation if the jumper is installed incorrectly.
JB6 & JB7
Position 1&2 = DSR
Position 2&3 = N/A
4.0 INSTALLATION
This section describes the functions of the Model 1000R16 rack
chassis, tells how to install front and rear Model 2085RC cards into the
chassis and provides diagrams for wiring up the interface connections
correctly.
4.1 THE MODEL 1000R16 RACK CHASSIS
The Model 1000R16 Rack Chassis (Figure 5) has card slots, plus
its own power supply. Measuring only 3.5” high, the Model 1000R16 is
designed to occupy only 2U in a 19” rack. Sturdy front handles allow
the Model 1000R16 to be extracted and transported conveniently.
4.1.1 THE RACK POWER SUPPLY
The power supply included in the Model 1000R16 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.
Figure 5. Model 1000R16 Rack Chassis with power supply
WARNING!
There are no user-serviceable parts in the
power supply section of the Model 2085RC. Voltage set-
ting changes and fuse replacement should only be per-
formed by qualified service personnel. Contact Patton
Electronics Technical support at (301)975-1007 for more
information.
