Toshiba Strata DK8 User Manual
Page 198
8-4
INSTALLATION-WIRING DIAGRAMS
SECTION 100-816-208
MARCH 1993
TABLE 8-D
DIGITAL TELEPHONE/DIU/DDSS CONSOLE/ADM/LOOP LIMITS
MODE
QPSU/KPSU
or
Battery Backup
1
DKT Ringing
(Volume Max)
DKT with
DVSU (OCA)
DKT with HHEU
or
Carbon Handset
DKT with PDIU-DI/
PDIU-DI2
PDIU-DS
DKT with HHEU
and PDIU-DI/PDIU-DI2
Maximum line length (24 AWG)
1 Pair
NOTES:
1.
2.
3.
4.
2 Pair
1 Pair plus
external power
3
1000 ft (303 m)
675 ft (204 m)
1000 ft (303 m)
495 ft (150 m)
1000 ft (303 m)
330 ft (100 m)
495 ft (150 m)
165 ft (50 m)
1000 ft (303 m)
675 ft (204 m)
495 ft (150 m)
33 ft (10 m)
1000 ft (303 m)
500 ft (151 m)
1000 ft (303 m)
500 ft (151 m)
1000 ft (303 m)
165 ft (50 m)
675 ft (204 m)
165 ft (50 m)
QPSU/KPSU
Battery Backup
QPSU/KPSU
Battery Backup
QPSU/KPSU
Battery Backup
QPSU/KPSU
Battery Backup
QPSU/KPSU
Battery Backup
QPSU/KPSU
Battery Backup
QPSU/KPSU
Battery Backup
QPSU/KPSU
Battery Backup
QPSU/KPSU
Battery Backup
QPSU/KPSU
Battery Backup
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
675 ft (200 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
330 ft (100 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
1000 ft (303 m)
DDSS2060A
DDCB
DKT with DVSU
and HHEU
Battery backup applies to instances when the system is being powered by batteries exclusively.
Digital telephones and other digital devices can operate at maximum lengths with two pair wiring or an external
power source.
See Figure 8-28 for external power wiring.
Digital cable runs must not have the following:
§
Cable splits (single or double)
§
Cable bridges (of any length)
§
High resistance or faulty cable splices
DKT with ADM