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4.3.1  TERMINAL INTERFACE CONNECTION

The Model 1045RC is wired as a DCE, and allows for three possible

terminal interface connections: 

RS-232C/V.24 (electrical) + DB-25 female (physical)

V.35/RS-530 (electrical) + DB-25 female (physical)

V.35 (electrical) + M/34 female (physical)

To select the appropriate 

electrical interface, please refer to

Section 3.1.4 of this manual.  To select or construct a cable with the
appropriate

physical interface pin-outs, please refer to the diagrams in

Appendix D and Appendix E of this manual.

4.3.2  TWISTED PAIR CONNECTION

The Model 1045RC supports communications between RS-232 or

V.35 devices  at distances to 6 miles and data rates up to 64 Kbps.  The
Model 1045RC is designed to operate in a closed data circuit with other
1045RCs or 1045 plug-in units.

To function properly, the Model 1045RC needs two twisted pairs of

unconditioned, dry metallic wire between 19 and 26  AWG (higher
number gauges may limit distance somewhat).  Both shielded and
unshielded wire yield favorable results.  Flat modular telephone type
cable, dial-up analog circuits or leased lines that run through
signal/equalization equipment are NOT acceptable.  For further
information about acceptable wire grades, please refer to the diagram
in appendix B.

Point-to-Point Twisted Pair Connection

The 6-position RJ-11 and 8-position RJ-45 jack options for the

Model 1045RC are prewired for a standard TELCO wiring environment.
Connection of a 2-wire or 4-wire twisted pair circuit between two or
more Model 1045RCs requires a 

crossover cable as shown in the

following diagrams.

15

RJ-11/4-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

RJ-45/4-Wire

SIGNAL

PIN#

COLOR

COLOR

PIN#

SIGNAL

GND

2

7.......................GND

RCV-

3

5.......................XMT-

XMT+

4

6.......................RCV+

XMT-

5 3

RCV-
RCV+

6

4.......................XMT+

GND

7

2.......................GND

Connection to ground is optional

Standard color codes—yours may be different

The Model 1045RC is not sensitive to polarity

AT&T standard modular color codes

16

1 - Blue
2 - Orange
3 - Black
4 - Red
5 - Green
6 - Yellow
7 - Brown
8 - Slate

1 - Blue
2 - Yellow
3 - Green
4 - Red
5 - Black
6 - White

Notice!

Any modular twisted pair cable connected to the

Model 1045RC must be shielded cable, and the outer shield
must be properly terminated to a shielded modular plug on both
ends of the cable.

Notice!

Any terminal cable connected to the Patton Model

1045RC must be shielded cable, and the outer shield must be
360 degree bonded–at both ends–to a metal or metalized
backshell.

Summary of Contents for 1045RC

Page 1: ...Powered High Speed Short Range Modem Rack Mount Card SALES OFFICE 301 975 1000 TECHNICAL SUPPORT 301 975 1007 http www patton com Part 07M1045RC B Doc 054051UB Revised 3 14 97 C E R T I F I E D An IS...

Page 2: ...ar installation If the Model 1045RC does cause interference to radio or television reception which can be determined by turning the power off or removing the card the user is encouraged to try to corr...

Page 3: ...iode surge suppressors The Model 1045RC is designed to mount in Patton s 2U high 19 rack chassis This 16 card chassis has a switchable 120 240 VAC power supply optional 48 VDC and mounts cards in a mi...

Page 4: ...peration in switched carrier multipoint and or hardware handshaking applications S1 7 Setting Off Constantly on On Controlled by RTS S1 8 V 52 and V 54 Diagnostic Test To reset the V 54 circuit set sw...

Page 5: ...ng mode S2 6 Setting On Asynchronous Off Synchronous Note in asynchronous mode the Clock Source must be set to Internal S1 5 On S1 6 On 7 S2 7 RS 232 V 35 Initiation of Local Analog Loopback Test The...

Page 6: ...ward the front of the PC board 9 3 2 REAR CARD CONFIGURATION The Model 1045RC has four rear interface card options DB 25 RJ 11 DB 25 RJ 45 M 34 RJ 11 and M 34 RJ 45 see Figure 5 below Each of these op...

Page 7: ...ignal Ground and frame ground In the open position pin 1 or pin B is lifted from frame ground JB4 Position 1 2 SGND DB 25 pin 7 or M 34 pin B and FRGND Connected Position 2 3 SGND DB 25 pin 7 or M 34...

Page 8: ...lled cards 4 2 INSTALLING THE MODEL 1045RC INTO THE CHASSIS The Model 1045RC is comprised of a front card and a rear card The two cards meet inside the rack chassis and plug into each other by way of...

Page 9: ...ment are NOT acceptable For further information about acceptable wire grades please refer to the diagram in appendix B Point to Point Twisted Pair Connection The 6 position RJ 11 and 8 position RJ 45...

Page 10: ...LED will blink sporadically 17 4 If the BER test indicates no errors are present move the V 52 toggle switch to the left thus activating the 511 E test with periodic errors If the test is working pro...

Page 11: ...ch on both Model 1045RCs must be turned on 2 If the test indicates no errors are present move the V 52 toggle switch to the left thus activating the 511 E test with errors present If the test is worki...

Page 12: ...he above data rate distance table as a general guideline only 21 APPENDIX C MODEL 1045RC FACTORY REPLACEMENT PARTS The Patton Model 1045RC rack system features interchangeable rear cards power cords f...

Page 13: ...m 1045RC 9 Receive Clock B From 1045RC 11 External Clock B To 1045RC 12 Transmit Clock B From 1045RC To 1045RC Data Term Ready DTR 20 DIRECTION CCITT V 35 EIA 530 INTERFACE DB 25 DIRECTION To 1045RC E...

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