Dateq BCS25, Руководство пользователя

Страница: 16 / 28

16
Dateq BCS25 manual BCS26(E) telephone input module
EN
TDM²
The hybrid automatically gets the correct N-1 return from the CUE, PGM or AUD bus. This is the
so-called Triple Dynamic Mix-Minus system, shortened to TDM
2
. Since the BCS26 generates the
N-1 signal itself, separate cleanfeeds are not necessary. The number of BCS26 modules which
can be used at the same time is therefore theoretically unlimited. In practice, the number of
telephone lines which can be used at the same time is limited by the quality of the telephone
hybrids being used.
If AUD is selected as well as PGM, the return from the PGM bus has priority over the return from
the AUD bus.
CUE has the highest priority when the channel is off. As soon as CUE is selected on a BCS26
module, the hybrid gets the return from the CUE bus.