Patton electronic 1050patton user manual Twisted Pair Connection Using RJ-11, Signal PIN#

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4.1.2 TWISTED PAIR CONNECTION USING RJ-11

If your two-pair cable is terminated in an RJ-11 plug, you may use the RJ-11 jack in the back of the Model 1050 to make the connection. The RJ-11 jack on a Model 1050 series Short Range Modem is prewired for a standard TELCO wiring environment. To be sure you have the right wiring, use the diagram below as a guide.

RJ-11

SIGNAL

1 ---------------------

GND

2 ---------------------

RCV-

3 ---------------------

XMT+

4 ---------------------

XMT-

5 ---------------------

RCV+

6 ---------------------

GND

For proper signal crossing between two Model 1050s using RJ-11 connectors, pin-out the twisted pair cable according to the diagram below.

 

RJ-11 Cable (4-Wire)

 

SIGNAL

PIN#

PIN#

SIGNAL

GND

1-----------------------

6

GND

RCV-

2-----------------------

4

XMT-

XMT+

3-----------------------

5

RCV+

XMT-

4-----------------------

2

RCV-

RCV+

5-----------------------

3

XMT+

GND

6-----------------------

1

GND

Connection to ground is optional

1

2

3

4

5

6

4.2 WIRING FOR MULTIPOINT CIRCUITS

The Model 1050 supports multi-point applications using either a star or daisy chain topology. Both topologies require special wiring, as well as specific carrier control strap settings for master and slave units.

4.2.1 DAISY CHAIN TOPOLOGY

Using a daisy chain topology, you may connect as many as 10 Model 1050s together in a master/slave arrangement. Maximum distance between the units will vary based upon the number of drops, data rate, wire gauge, etc. Call Patton Technical Support for specific distance estimates.

Figure 3 (below) shows how to wire the two-pair cables properly for a Model 1050 daisy chain topology. Note that the ground connection is not needed.

HOST

FIRST SLAVE

OTHER SLAVE(S)

XMT+

RCV+

RCV+

XMT-

RCV-

RCV-

RCV+

XMT+

XMT+

RCV-

XMT-

XMT-

Figure 3. Model 1060 daisy chain wiring

In a multipoint topology, you must configure the master Model 1050's carrier control strap differently than those of the slave Model 1050(s). Here are the proper carrier control strap settings for a daisy chain topology:

Function

Carrier Control Strap Setting

Master

Carrier “Constantly ON” (pegs 2 & 3)

Slave(s)

Carrier “Controlled by RTS” (pegs 1 & 2)

7

8

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Contents User Manual CE Notice ServiceRadio and TV Interference Default 1050 Configuration Table FeaturesAccessing the Model 1050 PC Board see Note DescriptionSetting the Carrier Control Strap see Note Setting the DCE/DTE SwitchInstallation Twisted Pair Wiring OverviewSignal Twisted Pair Connection Using RJ-11Signal PIN# Wiring for Multipoint CircuitsStar Topology LED IndicatorsHost First Slave Second Slave RS-232 ConnectionRemote Analog Loop Appendix a Patton Model 1050 SpecificationsAppendix B Patton Model 1050 Cable Recommendations Wire Gauge CapacitanceAppendix D Patton Model 1050 Block Diagram