Qpc471 Clock Controller Card - Nortel Circuit Card 311 Reference

110 Option settings
600 3 / resistive impedance
4
3-component complex impedance

QPC471 Clock Controller card

Table 50 "QPC471 vintage H" (page 110)
QPC471 Clock Controller card.
Table 50
QPC471 vintage H
System
61C
81
81C
81C with Fiber Network
*If there is only one Clock Controller card in the system, set to OFF. If there are two Clock Controller
cards, determine the total cable length between the J3 connectors (no single cable can exceed 25
ft.) and set these two switch positions for this cable length, as shown above. The maximum total
(combined) length is 50 ft. Set the switches on both cards to the same settings.
**Set to ON for clock controller 0. Set to OFF for clock controller 1.
Note: FNF based-systems the total clock path length is equal to the length of the NTRC49 cable
used to connect between the two clock controller cards.
Copyright © 2003-2008, Nortel Networks
.
Unit 0 jumper (Location E27)
Unit 1 jumper (Location E11)
Unit 2 jumper (Location D29)
Unit 3 jumper (Location D9)
Jumper: Unit 0
Jumper
Pin 1 to 2 Pin 1 to 2 Pin 1 to 2 Pin 1 to 2
Pin 2 to 3 Pin 2 to 3 Pin 2 to 3 Pin 2 to 3
SW1
1 2 3 4
on on on on
off off off off
on
off off off
on
off off off
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Unit 1 Unit 2
Jumper Jumper
lists option settings for the
SW2
1 2 3 4
off off off off
off off off off
off off off off
off off off off
*Cable length between the J3
faceplate connectors:
0–4.3 m (0–14 ft)
4.6–6.1 m (15–20 ft)
6.4–10.1 m (21–33 ft)
10.4–15.2 m (34–50 ft)
Unit 3
Jumper
SW4
1 2 3 4
on
off * *
on
off * *
on
** * *
on
** * *
off off
on
off
on
off
on on