Patton electronic 2701/C, 2701/B, 2701/D user manual Contents

CONTENTS
1.0	Warranty Information	4
1.1	Radio and TV Interference	4
1.2	CE Notice	4
1.3	Service	5
2.0	General Information	6
2.1	Features	6
2.2	Description	6
3.0	Configuration	7
3.1	DIP Switch Configuration	7
	Switch SW1-1 through SW1-5	8
	SW1-6 and SW1-7 Clock Modes	9
	SW1-8: Enable/Disable Loop Tests from DTE	10
	Switch SW2-1 Line Coding: HDB3 (default)	10
	Switch SW2-2: CRC-4 Multiframe	11
	Switch SW2-3 Data Inversion	11
	Switch SW2-4: Remote Digital Loopback Type	12
	Switch SW2-5 Front Panel Switches	12
	Switch SW2-6: V.54 Response Disabled (default)	12
4.0	Installation	13
4.1	Connecting to the G.703 Network	13
	Connecting the 2701/D (X.21 version) Dual Coaxial Cable
	(75 ohm) to the G.703 Network	13
	Opening the Case	13
	Connecting the Twisted Pair (120 ohm) to the G.703 Network ..	13
4.2	Connecting the Serial Port	14
	Connecting to a “DTE” Device	14
	Connecting to a “DCE” Device	15
	Configuring the X.21 Interface (2701/D)	15
4.3	Power Connection	15
	Universal AC Power (100–240 VAC)	15
	DC Power	16
5.0	Operation	17
5.1	Power-up	17
5.2	LED Status Monitors	17
5.3	Loop (V.54 & Telco) Diagnostics	18
	Operating Local Loopback (LL)	18
	Operating Remote Digital Loopback (RL)	19
	CSU Loop	20
	Using the V.52 (BER) Test Pattern Generator	20
A	Specifications	21
A.1	Network Data Rate	21
A.2	Network Connector	21
A.3	Nominal Impedance	21
A.4	Line Coding	21

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