Studer D19m, Инструкция по эксплуатации, Страница: 72 / 100

D19m Technical Description
E58 D19m
Date printed:
30.06.20
2.5.2 D19m ADATO – Dual 8-Channel ADAT Out
1.940.495/1.940.496
The ADATO card converts the TDM bus signals into the optical ADAT
format. The card supports two 8-channel outputs for (plastic) optical fibre
with a word length of up to 24 bits. The synchronization is taken from the
TDM bus (CK128 clock). A PLL increases the clock rate to 256 × FS. The
channel status bit is not supported by the ADAT format.
The addressing must be done with four DIP switches on the backplane. For
this card, it cannot be performed automatically because more than four
audio channels are processed.
The card can also be equipped with eight AES/EBU receivers and a separate
sync input for standalone applications (order no. 1.940.496). The ITDM
jumper on the backplane decides whether the sync signal is taken from the
TDM bus or from the card itself. If it comes from the card itself, the sync is
either taken from the separate sync input (as long as a valid signal is avail-
able) or from the first AES/EBU input.
Configuration: Usually, the D19m cards are addressed just by plugging them into a slot of
the D19m rack. The first card has address 0 (CH1...4), the second card has
address 1 (CH5...8), etc. The ADATO card, however, processes 16 mono
channels, and thus requires a specific address setting.
DIP switch No.
1 2 3 4 Address
on on on on 1...16
off on on on 5...20
on off on on 9...24
off off on on 13...28
on on off on 17...32
off
on
off
on 21...36
on off off on 25...40
off off off
on 29...44
on on on off 33...48
off on on off 37...52
on off on off 41...56
off off on off 45...60
on on
off off
49...64
CLOCKS
1.940.496.20 only
REC
REC
REC
PLL
OPTO
OUT1
OPTO
OUT2
TDM BUS
CONTROLLER
AES IN 1…4
AES IN 5…8
AES SYNC IN
BUFFER