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DTE as DSR or RI (JB6 & JB7)

Because the Model 2017RC uses DSR (but not RI), only position

1&2 is valid when this rear card is used.  Position 1&2 causes  the
terminal (DTE) to see DSR when the Model 2017RC is powered up
properly.  Position 2&3 is for Ring Indicate, which is not used on the
Model 2017RC.  Furthermore, use of position 2&3 will cause DSR to
float, which will lead to improper operation of the Model 2017RC.  

JB6 & JB7

Position 1&2  =  DSR
Position 2&3  =  Not a Valid Setting for Model 2017RC

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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 2017RC 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 6) has sixteen short

range modem 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.

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WARNING!

There are no user-serviceable parts in the

power supply section of the Model 2017RC. Fuse
replacement should only be performed by qualified
service personnel.  Contact Patton Electronics Technical
support at (301)975-1007 for more information.

Figure 6.

Model 1000R16 Rack Chassis with Power Supply 

Summary of Contents for 2017RC

Page 1: ...S 232 to 20mA Current Loop Converter Dual Port Rack Mount Card SALES OFFICE 301 975 1000 TECHNICAL SUPPORT 301 975 1007 http www patton com Part 07M2017RC B Doc 073062U Rev C Revised 1 22 08 C E R T I F I E D An ISO 9001 Certified Company ...

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Page 3: ...freight prepaid and insured to Patton Electronics All returns must have a Return Materials Authorization number on the outside of the shipping container This number may be obtained from Patton Electronics Technical Service at 301 975 1007 http www patton com or support patton com Packages received without an RMA number will not be accepted Patton Electronics technical staff is also available to an...

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Page 5: ...y closed current loop the transmitter or the receiver acts as the active current source while the other of the two must be passive To configure the Model 2017RC active passive modes you must first determine whether the transmitter should be active or passive The active passive switches are used to control the mode of the 20mA transmitters Each converter on the dual port card has one switch As Figu...

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Page 7: ...d Straps JB1 and JB2 Receiver Impedance In the normal setting JB1 and JB2 are positioned on posts 1 and 2 The Normal setting is best suited for applications in which two Model 2017RCs are used together The low impedance setting may improve performance with other current loop devices JB1 Position 1 2 Normal default Position 2 3 Low Receiver Impedance JB2 Position 1 2 Normal default Position 2 3 Low...

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Page 9: ...2 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 C...

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Page 11: ...d 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 convention...

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Page 13: ... 2017RC or a compatible 20mA device Dial up analog circuits like those in a standard Hayes type modem are not acceptable For further information see Appendix B 4 4 1 POINT TO POINT TWISTED PAIR CONNECTION The 6 position RJ 11 and 8 position RJ 45 jack options for the Model 2017RC always the upper jack on the rear interface card are prewired for a standard TELCO wiring environment Pin descriptions ...

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Page 15: ...a indicates status of transmit data from the DTE Red indicates a mark or idle state Green indicates a space or active state RD Receive Data indicates status of receive data from the DCE Red indicates a mark or idle state Green indicates a space or active state 5 2 POWER UP There is no power switch on the Model 2017RC Power is automatically applied to the 2017RC when its card edge connector touches...

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Page 17: ...ose tested but to reduce the potential difficulties in the field one should ensure that the cable being used has similar or better characteristics lower capacitance or lower resistance Wire with capacitance of 20pF ft or less is suitable for all our Short Range Modems however distances may vary from those published in our catalog Resistance will also affect distance but not functionality Wire shou...

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Page 19: ...SR 3 109 Received Line Signal Indicator CD 4 108 2 DTE Ready DTR 5 102 Signal Common 6 104 Received Data 7 103 Transmitted Data 8 106 Clear to Send 9 105 133 Request to Send Ready for Receiving 10 N A Not Used Pins 2 9 conform to the EIA TIA 561 eight position non synchronous interface standard For all modular jacks 6 8 or 10 position Pin 1 is always toward the bottom when the rear card is oriente...

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