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4.2.2  Connect Dual Coaxial Cable (75 ohm) to G.703 Network

The Model 1088/K is also equipped with dual female BNCs (TX

and RX) for connection to a 75 ohm dual coax G.703 network inter-
face. If your G.703/G.704 network terminates via dual coaxial cable,
use the diagram below to make the proper connections.  The connec-
tor pinout and signals are shown in Figure 7, below.

NOTE:  The outer conductor of the coax cables are isolated
from system earth  ground.

4.3 CONNECT TWISTED PAIR DSL INTERFACE

The Model 1088/K supports communication between two DTE

devices at distances to 5 miles (8 km) over 24 AWG (.5mm) twisted
pair wire.  Two things are essential: 

1.    These units operate as a pair.  Both units at the end of the 

twisted pair DSL span must be set for the same DTE rate.

2.    To function properly, the Model 1088 needs one  

twisted pair of metallic wire.  This twisted pair must be 
unconditioned, dry, metallic wire, between 19 (.9mm) and 26
AWG (.4mm)  (the higher number gauges will limit distance).  
Standard dial-up telephone circuits, or leased circuits that run 
through signal equalization equipment, or standard, flat modu-
lar telephone type cable, are 

not acceptable.

The RJ-45 connector on the Model 1088’s twisted pair interface is

polarity insensitive and is wired for a two-wire interface.  The signal/pin
relationships are shown in Figure 8.

15

4.4  POWER CONNECTION

Universal AC Power (100-240VAC)

The Model 1088 uses a 5VDC, 2A universal input 100-240VAC,

power supply (center pin is +5V).  The universal input power supply
has a male IEC-320 power entry connector.  This power supply con-
nects to the Model 1088 by means of a barrel jack on the rear panel.
Many international power cords are available for the universal power
supply (Please refer to Appendix B for country-specific power cords.  

The Model 1088 powers up as soon as it is plugged into an AC

outlet--there is no power switch.

120 VAC Power (US)

The 100-132 VAC adapter supplied with the U.S. version of the

Model 1088 is a wall mount type and may be plugged into any
approved 120 VAC wall jack.

230 VAC Power (International)

The 230 VAC adapter supplied with the International version of the

Model 1088 is a wall mount type and may be plugged into any
approved 230 VAC wall jack.

DC Power 

The 36-60 VDC DC to DC adapter supplied with the DC version of

the Model 1088 plugs in a DC source (nominal 48VDC) and plugs into
the barrel power supply jack on the rear of the 1088/K.  Please refer to
Figure 9 to make the proper connection.

16

Figure  8. Model 1088 twisted pair line interface.

1 (N/C)
2 (N/C)
3 (N/C)
4 (2-Wire TIP)
5 (2-Wire RING)
6 (N/C)
7 (N/C)
8 (N/C)








TX 

(Data 

TO

G.703/G.704

Network)

RX

(Data 

FROM

G.703/G.704

Network)

Network

Figure 7: 75 Ohm Dual Coaxial G.703 Interface

Summary of Contents for 1088

Page 1: ...MODEL 1088 K mDSL Modem with fixed G 703 G 704 Interface Part 07M1088 K B Doc 033141UB Revised 02 22 00 SALES OFFICE 301 975 1000 TECHNICAL SUPPORT 301 975 1007 http www patton com An ISO 9001 Certif...

Page 2: ...oduct These damages include but are not limited to the following lost profits lost savings and incidental or consequen tial damages arising from the use of or inability to use this product Patton Elec...

Page 3: ...mDSL Rocket offers the ability to extend G 703 G 704 service over Multi rate Symmetric Digital Subscriber Line technology Multi rate DSL offers the ability to deliver the maximum bit rate that a twis...

Page 4: ...n in the table below Switch S1 1 CO CP Use Switch S1 1 configure the CO located at the Central Office or or G 703 G 704 demarcation point or CP located at the Customer Premises mode of the 1088 K S1 1...

Page 5: ...e special violations and decodes them as zeros This method enables the network to meet minimum pulse density requirements Use HDB3 unless AMI is required in your application Alternate Mark Inversion A...

Page 6: ...n 1664 On Off Off Off Off On 1728 Off Off Off Off Off On 1792 On On On On On Off 1856 Off On On On On Off 1920 On Off On On On Off 1984 Off Off On On On Off 2048 Switch S2 7 Reset Software Defaults Sw...

Page 7: ...g S1 and S2 DIP switches in the ON position as described in Figure 3 below When the CO and CP units connect over DSL the CP will enter a pre defined default configuration Receive Recovered Clocking Du...

Page 8: ...r a 75 Ohm connection coax insert JP1 JP4 JP5 and JP6 default 2 For a 120 Ohm connection RJ45 remove JP1 and JP4 JP5 and JP6 4 2 1 Connect Twisted Pair 120 ohm to G 703 Network The Model 1088 K is equ...

Page 9: ...wire interface The signal pin relationships are shown in Figure 8 15 4 4 POWER CONNECTION Universal AC Power 100 240VAC The Model 1088 uses a 5VDC 2A universal input 100 240VAC power supply center pin...

Page 10: ...cross the DSL span is active The DSL Link LED is Off when the link is down E1 FE1 Link Active Green Solid green On indicates a valid E1 connection LOS Active Red The Loss of Sync indicates that the un...

Page 11: ...eives framed packets from the far end the DSL Link LED will be active If framed packets are not received the DSL Link LED will be inactive The restart procedure uses this information to determine if a...

Page 12: ...the front panel switch or the DTE interface the unit will enter mode 1 If the units are linked NS LED off then the unit will enter a mode 2 Local Loop A Mode 1 Local Loop is shown in Figure 12 When t...

Page 13: ...the box 23 Local Loop After the 511 511E pattern times out the ER led with 511 511E will begin flashing It will remain this way until continued the pattern generator switch is turned off Note that the...

Page 14: ...again before the completion of the termination phase the switch will be ignored until it is placed back into the normal position 25 26 Remote Digital The Remote Digital Loop with 511 511E is Loop wit...

Page 15: ...Using the V 52 BER Test Pattern Generator To use the V 52 BER tests in conjunction with the Remote Digital Loopback tests or with Local Line Loopback tests follow these instructions 1 Locate the 511 5...

Page 16: ...de and Phase Modulation Line Rates DSL line 144 272 400 528 784 1040 1552 2064 Line Interface Transformer coupled 1500 VAC isolation mDSL Physical Connection RJ 45 2 wire polarity insensitive pins 4 a...

Page 17: ...000 1 9 3 1 2064 1600 2048 5920 1 1 1 8 8000 1 5 2 5 Cross Talk 49 adjacent CAP pairs 26 AWG 0 4mm 24 AWG 0 5mm Transmission Distance Patton NetLink mDSL Model 1088 No Cross Talk 26 AWG 0 4mm 24 AWG 0...

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