LBI-39055
9
•
•
Test Options - All Disabled (or factory defaults)
•
•
Dial Line Options - (not applicable; leave at factory
defaults)
•
•
Speaker Options
Volume Control = Low
Control = On Until Carrier Detect
Audio Links
Audio Concentrator Cards at the back of the CEC/IMC
cabinet provide audio connections at the CEC/IMC. See the
customer-specific system documentation print-outs for
Concentrator Card connector pin-out details. Normally,
these connections are extended out of the CEC/IMC cabinet
via Telco cables and connections are actually made at punch
blocks.
At the C3 Maestro, audio connections terminate at
RJ-11 modular jacks on the Audio PA Board(s) in the Audio
Tower. These jacks are labeled "
LINE A
" and "
LINE B
".
Table 6 shows line requirements between the C3 Maestro
and the CEC/IMC for each audio input or output 2-wire pair.
Note that two (2) output pairs, Line B out on board #1 and
Line A out on board #2, are never used. Table 5 gives the
modular jack pin-outs and Figure 7 shows their locations.
Interconnect the required pairs between the Audio PA
Board(s) and the appropriate CEC/IMC Audio Concentrator
Card or punch block. Shielded pairs are recommended.
In some cases, the console equipment package is
equipped with factory pre-wired 100-foot modular cables for
audio interconnections between the console and the
CEC/IMC. Each has a RJ-11 modular plug on one end for
mating to one of the Audio Board's modular jacks. The other
end is "pig-tailed" (unterminated) so it may be punched
down to the appropriate terminals on the CEC's/IMC's punch
block. If utilizing the pre-wired cables, see the Cable
Assembly Diagram at the end of this manual for wire color
coding.
PERSONAL COMPUTER
PC-To-Audio Tower Interconnect Cable
The PC-to-Audio Tower Interconnect Cable (part
number P29/1030050000) must be connected between the
PC and the Audio Tower. This cable has male DB-37
connectors on both ends with the connectors' pins wired in a
straight-through pin-to-pin fashion - pin 1 to pin 1, pin 2 to
pin 2, etc. The cable is ten (10) feet long and it should not
be lengthened.
Mate one male DB-37 connector to the Logic Board
and mate the other to the Audio Matrix Board's connector
labeled "
COMPUTER
".
NOTE
Do not over-tighten the screws on the DB-style
connectors.
TABLE 5
−−
CONSOLE-TO-CEC/IMC BALANCED
LINE AUDIO INTERCONNECTIONS
STANDARD
6-POSITION
4-CONTACT
RJ-11 PIN
NUMBER
*
AUDIO PA
BOARD
6-POSITION
4-CONTACT
RJ-11 PIN
NUMBER
TO/FROM
CEC/IMC
1
(none)
(n/a)
2
1
CIM Line Out
3
2
CIM Line In
4
3
CIM Line In
5
4
CIM Line Out
6
(none)
(n/a)
* RJ-11 pins 1 and 6 are not used.
LINE A
LINE B
DIG. IN 1
DIG. IN 2
RELAY 2
LINE A
LINE B
DIG. IN 1
DIG. IN 2
RELAY 2
SELECT AUDIO
AND MIC
UNSELECT #1
(LINE OUT PAIR
NOT USED)
UNSELECT #2
(LINE C), (LINE
OUT PAIR NOT
USED)
PA #1
PA #2
RELAY 1
RELAY 1
CD PATCH AUDIO
(LINE D)
OR
UNSELECT #3
Figure 7
−−
Audio PA Boards' Modular Jacks
NOTE
