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USER
MANUAL

MODEL 2703-X21

G.703/E1 Digital Modem

SALES OFFICE
(301) 975-1000
TECHNICAL SUPPORT
(301) 975-1007
http://www.patton.com

Part# 07M2703-X21-C
Doc# 031111UC
Revised 6/19/98

C E R T I F I E D

An ISO-9001

Certified Company

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Summary of Contents for 2703-X21

Page 1: ...MODEL 2703 X21 G 703 E1 Digital Modem SALES OFFICE 301 975 1000 TECHNICAL SUPPORT 301 975 1007 http www patton com Part 07M2703 X21 C Doc 031111UC Revised 6 19 98 C E R T I F I E D An ISO 9001 Certif...

Page 2: ...quipment and receiver are on different branches 1 2 SERVICE All warranty and non warranty repairs must be returned freight prepaid and insured to Patton Electronics All returns must have a Return Mate...

Page 3: ...Models 2703 X21 UI and 2703 X21 DC This section describes switch and jumper locations and explains all possible configurations 3 1 EXTERNAL DIP SWITCH SETTINGS The Model 2703 X21 s DIP switch set is l...

Page 4: ...is not necessary S1 5 Setting On Data inverted Off Data not inverted S1 6 S1 7 S1 8 Not Used 5 3 2 INTERNAL JUMPER SETTINGS The Model 2703 X21 s seven jumpers are located on the PC board inside the u...

Page 5: ...m Shield to Ground Connection This setting determines whether the shield of the 120 Ohm modular cable is connected to earth ground This connection is optional when operating in 120 Ohm balanced mode T...

Page 6: ...PLY OPTIONS The Model 2703 X21 is available with three power supply options The Standard power supply option Model 2703 X21 or 2703 X21 230 is factory configured for either 115 or 230 VAC depending on...

Page 7: ...air connection the Model 2703 X21 is equipped with dual female BNCs TX and RX for connection to a 75 ohm dual coax G 703 network interface The outer conductor of the coax cables is isolated from syste...

Page 8: ...loopback mode 13 5 3 LOOPBACK TEST LAL The Model 2703 X21 is equipped with a Local Analog Loopback LAL mode to assist in evaluating the operation of the local Model 2703 X21 Any data sent to the loca...

Page 9: ...r Sensitivity 10 dB 0dB 2 4V Power 85 265 VAC switch selectable 50 60 Hz 85 265 VAC 50 60 Hz universal input option 48 VDC option Temperature Range 0 50 C 32 122 F Altitude 0 15 000 feet Humidity 5 to...

Page 10: ...ost Office Technical Guides 2 or 26 and given permission to attach Any other usage will invalidate the approval of the Interface Module Interconnection of the Interface Module the port marked Network...

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