Patton electronic X.21 Interfaces, 2707C, 2707D user manual Table Of Contents

	TABLE OF CONTENTS
1.0	Warranty Information	2
1.1	FCC Information	2
1.2	CE Notice	2
1.3	Service	3
2.0	General Information	4
2.1	Features	4
2.2	Description	4
3.0	Configuration	5
3.1	DIP Switch Configuration	5
	Switch SW1-1 through SW1-8	6
	Switch SW1-1 Line Coding: HDB3 (default)	6
	SW1-2 Local Loop: Inactive (default)	7
	SW1-6 and SW1-7 Clock Modes	8
	SW1-8: Enable/Disable Loop Tests from DTE	8
4.0	Installation	9
4.1	Connecting To The G.703 Network	9
	Connecting the 2707/D (X.21 version) Dual
	Coaxial Cable (75 Ohm) to the G.703 Network	9
	Opening the Case	9
	Connecting the Twisted Pair (120 Ohm) to
	the G.703 Network	10
4.2	Connecting The Serial Port	10
	Connecting to a “DTE” Device	10
	Connecting to a “DCE” Device	10
	Configuring the X.21 Interface (2707/D)	10
4.3	Power Connection	11
	Universal AC Power (100-240VAC)	11
	DC Power	12
5.0	Operation	13
5.1	Power-up	13
5.2	LED Status Monitors	13
5.3	Local Loop Diagnostics	14
	Operating Local Loopback (LL)	14
A	Model 2707, G.703 Specifications	15
B	Model 2707, Interface Pin Assignment	16
C	Model 2707, Interface Pin Assignment	18
D	Model 2707, Factory Replacement Parts
	And Accessories	19

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