Patton electronic Asynchronous JB6 & JB7 DTE as DSR or RI, THE MODEL 1000R16 RACK CHASSIS

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

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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.

Figure 5. Model 1000R16 Rack Chassis with power supply

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.

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.

(continued)

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