Page 142 of 894 Option settings
553-3001-211 Standard 2.00 September 2004
QPC471 Clock Controller card
Table 50 lists option settings for the QPC471 Clock Controller card.
Table 50
QPC471 vintage H
System
SW1 SW2 SW4
1 2 3 4 1 2 3 4 1 2 3 4
61C on on on on off off off off off on * *
81 off off off off off off off off off on * *
81C on off off off off off off off ** on * *
81C with Fiber Network on off off off off off off off ** on * *
*Cable length between the J3
faceplate connectors:
0–4.3 m (0–14 ft) off off
4.6–6.1 m (15–20 ft) off on
6.4–10.1 m (21–33 ft) on off
10.4–15.2 m (34–50 ft) on on
* 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.