Black Box G.703 NTU w/V35, Manual

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G.703 NTU W/V35
5
CONTENTS
CE Notice .................................................................................................... 2
Radio and TV Interference .......................................................................... 2
FCC Part 68 ................................................................................................. 3
Trademarks Used In This Manual ............................................................... 3
Normas Oficiales Mexicanas (NOM) Electrical Safety Statement ............. 3
1. General Information ....................................................................................7
1.1 Features ...............................................................................................7
1.2 Description ......................................................................................... 7
2. Configuration............................................................................................... 8
2.3 DIP switch configuration.................................................................... 8
2.3.1 Switch SW1-1 through SW1-8 ................................................ 9
2.3.2 Switch SW1-1 line coding: HDB3 (default)............................ 9
2.3.3 SW1-2 Local loop: inactive (default) .................................... 10
2.3.4 SW1-6 and SW1-7 clock modes............................................ 10
2.3.5 SW1-8: Enable/disable loop tests from DTE......................... 11
3. Installation ................................................................................................. 12
3.4 Connecting the twisted pair (120 Ohm) to the G.703 network ........ 12
3.5 Connecting the V.35 serial port........................................................ 12
3.5.6 Connecting to a “DTE” device .............................................. 13
3.5.7 Connecting to a “DCE” device .............................................. 13
3.6 Power connection ............................................................................. 13
3.6.8 Universal AC power (100–240VAC) .................................... 13
4. Operation ................................................................................................... 14
4.7 Power-up........................................................................................... 14
4.8 LED status monitors ......................................................................... 14
4.9 Local loop diagnostics ...................................................................... 15
4.9.9 Operating local loopback (LL) .............................................. 15
A. G.703 specifications .................................................................................. 16
B. Interface pin assignment............................................................................ 17