D19M Rcc - Remote Ctrl. Card For Mp4Rc Mic/Line In - Studer D19m Service Instructions Manual

D19m Technical Description
2.1.5 D19m RCC – Remote Ctrl. Card for MP4RC Mic/Line In
SIGNAL
SUPPLY
E28 D19m
The purpose of the RCC card is controlling up to 14 Mic/Line input cards
(pre-amps). Gain, high-pass filter, phantom powering and limiter (clip pro-
tection) can be set. In contrast to the audio cards, this card must be inserted
th
into the 16 slot, i.e. the last one on the backplane, and it works only in
conjunction with the backplane version 1.940.551. Control of the Mic/Line
inputs is performed by an I²C bus on the backplane. For various signaling
purposes, 8 opto-coupled inputs and 8 relay outputs can be used. An
AES/EBU signal can be distributed to 4 outputs, primarily used for sync
signal distribution. The standard 110 Ω input impedance of this AES/EBU
input can be switched to hi-Z by means of a jumper, which allows to use the
same signal also for syncing e.g. a MADO card.
Usually the D19m rack is controlled by a D950 mixing console (stagebox
system). In this application, an RS422 signal is used for control. This con-
trol signal can be transmitted in balanced mode or via an optical interface.
For other purposes, RS232 or MIDI control is possible as well. The baud
rate of the control link can be jumper-selected to 31.25 or 38 kBaud.
If more than one stagebox is used, they must be linked to the mixing console
in a star configuration.
I²C BUS
8 x OPTO IN
8 x OUT
RS422
RS232
OPTO
MIDI
CONTROLLER
AES IN
DIP Switch
31.25
Baud rate
38.4
1.940.576
MIDI
RS 422
RS 232
OPTO
4 x AES OUT
TTL AES
TERM OFF
Date printed: 30.06.20