D19M Mp4Rc - Quad Remote Controlled Mic/Line In - Studer D19m Service Instructions Manual

2.1.4 D19m MP4RC – Quad Remote Controlled Mic/Line In
PHANTOM
MUTE
SIGNAL
SUPPLY
LEDs: PHANTOM 1...4
MUTE 1...4
SIGNAL 1...4
Date printed: 30.06.20
The Mic/Line inputs (pre-amps) are equipped with 4 high-quality preampli-
fiers. The gain can be controlled in 1 dB steps over a wide range. The inputs
are transformer-balanced and switchable between microphone and line level
sensitivity. Phantom power, high-pass filter and gain are remote controlled
for each channel individually. A simple limiter (clip protection) can be acti-
vated for all 4 channels in common. Control of the Mic/Line inputs is per-
formed by an I²C bus coming from the D19m RCC remote controller card
1.940.576 via the backplane.
A mute input signal per Mic/Line input permits to mute the signal independ-
ent of the remote control signal. The line output is electronically balanced.
The Split Out supplies, regardless of the current gain setting, a signal which
is 26 dB above the mic input signal or 1 dB above the line input signal).
MIC
LINE
PHANTOM
POWER
I²C
CONTROL
Indicates active phantom powering for each channel.
Indicates external mute, if active, for each channel.
Indicates present signal for each channel.
SUPPLY Indicates " power on" status.
TRANSF. INPUT
HIGH PASS
LINE OUT
SHIFT REG
CH 4
CH 3
CH 2
CH 1
12...18 dBu adj.
D19m Technical Description
CLIP
PROTECTION
MUTE
ZERO SIGNAL
DETECT PRESENT
1.940.575
SPLIT OUT
LINE +1 dB
MIC +26 dB
1 OF 4 CHANNELS
D19m E25