Implementation
Page 67 of 80
Meridian Data Services
Description
Note 1: A co-located ADM may be installed up to 4000 ft (1200 m) from
the DLC. This allows an end to end separation of 8000 ft (2400 m).
Note 2: In some instances, the above limitations may be exceeded with
no adverse effect upon ADM, AIM, or MCDS operation.
Mixed wire gauge
In a mixed wire gauge application, the allowable equipment separation
distance must be reduced in order to retain transmission quality. Average
figures are as follows:
Note 1: A co-located ADM may be installed up to 4000 ft (1200 m) from
the DLC. This allows an end to end separation of 8000 ft (2400 m).
Note 2: In some instances, the above limitations may be exceeded with
no adverse effect upon ADM, AIM, or MCDS operation.
AIM
An AIM may be placed as far from its associated AILC port as is consistent
with EIA RS-422 lead specifications, which limits the distance to 4000 ft
(1200 m).
Customers who use RPE can install ADM at remote locations as well as at the
main location. This extends the range of all-digital data communications to
approximately 100 km.
Cable
PIC outside
PVC inside (Type D)
22/24 AWG
2500 ft (762 m)
2500 ft (762 m)
1
2100 ft (640 m)
2
24/26AWG
1500 ft (457 m)
1500 ft (457 m)
1
1200 ft (366 m)
2
Note 1:
QPC311E or higher vintage with QMT7C/D, QMT8A, QMT12A, MCDS
Note 2:
QPC311C/D with QMT7C/D, QMT8A, QMT12A, MCDS
Note 3:
QMT7D operating limitation with Nortel Networks cable
