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JB6 & JB7: DTE as DSR or RI
Because this rear card is designed to function with a variety of rack
cards, it comes equipped with two strap positions. However, when
used with the Model 1012ARC, this strap 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 1012ARC is also
disconnected) and can cause improper operation if the jumper is
installed incorrectly.
JB6 & JB7 Setting
Position 1&2 DSR
(default)
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 1012ARC cards and
provides diagrams for correctly wiring the interface connections.
4.1 THE MODEL 1000R16 RACK CHASSIS
The Model 1000R16 Rack Chassis (Figure 5) has sixteen short
range modem card slots, plus its own power supply. Measuring only
3.5” high, the Model 1000R16 occupies only 2U in a 19” rack. Sturdy
front handles allow the Model 1000R16 to be 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.
(continued)
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Figure 5. Model 1000R16 Rack Chassis with power supply
WARNING! There are no user-serviceable parts in the
power supply section of the Model 1012ARC Series.
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.