Wiring the common access panel, Connect a bits timing source, Iring the – ADC ACE-COM L1 User Manual
Page 18: Ommon, Ccess, Anel
Installation
LTPH-UM-1088-02, Issue 2
8
January 3, 2002
ThinMux Chassis
W
IRING THE
C
OMMON
A
CCESS
P
ANEL
1
Unscrew the common access panel hold-down lugs and remove the cover
(see
).
Figure 4.
Wire-Wrap Pin Positions/Common Access Panel (rear view)
Connect a BITS Timing Source
2
Determine if you require a BITS timing source connection to the chassis;
if so, the chassis must first have a line termination prior to chassis
connection.
The BITS concept is used for interoffice synchronization distribution.
Each line source, Bits A and Bits B, must be terminated. ADC provides
this termination through external termination blocks (product catalog
TERM-100) placed on wire-wrap terminal posts on the rear of the
ThinMux chassis as shown in
.
Test
Access
CRIT
VIS
CRIT
AUD
Bits
Alarm
B-
B+
A-
A+
TTIP
TRING
RTIP
RRING
Frame
GND
Frame
GND
NO
NO
COM
COM
NU
NU
FE
MIN
MAJ
CRIT
COM