Patton electronic 1000RC SGND & FRGND JB5, DTE as DSR or RI JB6 & JB7, The Rack Power Supply

JB2

Position 1&2 = Line A Shield Connected to Frame Ground Position 2&3 = No Shield

JB4

Position 1&2 = Line B Shield Connected to Frame Ground Position 2&3 = No Shield

SGND & FRGND (JB5)

In position 1&2, this strap links signal ground and frame ground through a 100 Ohm, 1/2 W resistor. In position 2&3, pin 1 is “not connected to frame ground.

JB5

Position 1&2 = SGND and FRGND Connected

Position 2&3 = SGND and FRGND Not Connected

DTE as DSR or RI (JB6 & JB7)

Because the Model 1000RC uses DSR (but not RI), only position 1&2 is valid when this rear card is used with the Model 1000RC. Position 1&2 causes the terminal (DTE) to see DSR when the Model 1000RC is powered up properly. Position 2&3 is for Ring Indicate, which is non-functional on the Model 1000RC. Furthermore, use of position 2&3 will cause DSR to float, which will lead to improper operation of the Model 1000RC.

JB6 & JB7

Position 1&2 = DSR

Position 2&3 = (Ring Indicate) Not Valid for Model 1000RC

4.0 INSTALLATION

This section describes the functions of the Model 1000R16P rack chassis, tells how to install front and rear Model 1000RC cards into the chassis and provides diagrams for wiring up the interface connections correctly.

4.1 THE MODEL 1000R16P RACK CHASSIS

The Model 1000R16P Rack Chassis (Figure 7) has sixteen short range modem card slots, plus its own power supply. Measuring only 3.5” high, the Model 1000R16P is designed to occupy only 2U in a 19” rack. Sturdy front handles allow the Model 1000R16P to be extracted and transported conveniently.

Figure 7. Model 1000R16P Rack Chassis with power supply

4.1.1 THE RACK POWER SUPPLY

The power supply included in the Model 1000R16P 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 1000RC. 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.

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