Studer D19m, Service Instructions Manual, Page: 64 / 100

D19m Technical Description
E50 D19m
Date printed:
30.06.20
LED: SUPPLY Indicates “ power on” status (this LED is located in different positions for
the two versions 1.940.480 and 1.940.481).
Jumpers: 8-CH / 16-CH Switchover between 8 or 16 channels to TDM bus.
TTL / AES Sync selection – from TDM bus, or from AES/EBU sync input (this jumper
is available for version 1.940.481 only).
Technical Data:
Input impedance
110
Ω AES/EBU input (1.940.481 only)
Input sensitivity min. 200 mV
Output impedance
110
Ω AES/EBU outputs (1.940.481 only)
Output level (into 110
Ω
)
5 V
TDIF input according to TDIF specifications
1.940.480 max. 0.3 A Current consumption 5 V
1.940.481 max. 0.7 A
Input sampling frequency 28...55 kHz
Operating temperature range
0...40
°
C
TDIF Interface PCB Both a TDIF input and a TDIF output card can be connected to one of the
two 25-pin D-type sockets on the TDIF Interface PCB 1.940.632. In this
way, the inputs and outputs of two 8-channel digital recorders (e.g. DA-88)
may be connected with one single cable each.
For the connection to the backplane, two 16-pin flat cables are used. Fur-
thermore, the TDIF Interface PCB connects to a BNC connector panel han-
dling the sync signals.
Note: The TDIF interface is suitable for short distances only. Even with high-
quality cable, a length of 5 m must not be exceeded.
DA-88 Synchronization: When using, for example, a DA-88 unit, a word clock signal must be sent
over a separate line, because the DA-88 cannot sync to the LRCK signal.
For this purpose, the BNC Board 1.940.633 is available. It can be con-
nected to the TDIF Interface Card 1.940.632.
Note: The phase position of the word clock signal is very critical. No other word
clock signal must be used in this application.
AES AES
TTL 8-CH
16-CH
SUPPLY
SUPPLY