Stereo Micro/Line Input Module - Ecler Sclat 200VS Manual De Instrucciones

7. STEREO MICRO/LINE INPUT MODULE

Inputs and Sensitivity
This module offers an input suitable for connecting balanced microphones having a -50dBV
(3.16mV) nominal input sensitivity. It admits levels between 0.56 and 17.7mV. The module also
features a line input (0.100 to 10V), identical to that in the PHONO/LINE module.
Selecting one of these two inputs is done with the MICRO/LINE push-button switch. This
selects one of the input pairs on the rear panel. A green indicator lights up when the MICRO input is
selected and a yellow indicator does when the LINE input is selected.
The MICRO input connectors are XLR-3 type sockets. These microphone inputs admit
balanced operation. For that, it respects following connection scheme:
Microphones should have a low impedance (200 to 600Ω) and be monophonic. For non-
balanced operation, Pin 3 must be shorted to ground.
A HI/LO switch (25) is placed next to this input (24) and adds an extra 20dB attenuation to the
input, obtaining not only good level matching, but also allowing for a comfortable use of the gain
control while using microphones with high output levels. These modules are factory-set with the
switch in LO position.
Regarding the LINE input, its nominal input sensitivity can be switched from -5dBV to +5dBV,
via the LOW/HIGH switch found on the rear panel. For high signal levels such as CD players, DATs
or MINIDISCs use +5dB. For low signal levels use -5dB (Cassette players, tape recorders, tuners...)
These modules are factory-set with the switch in HI position.
Phantom (23)
This module includes a switch, which activates the "Phantom" power supply for the
microphones requiring it. The Phantom switch is located at the rear connection panel. These
modules are factory-set with the switch in OFF position.
GAIN (4) Input Gain Adjustment
On the front panel you can find a channel gain potentiometer, which is common for both
inputs. Its adjustment range is ±15dB. This control is useful when compensating for level differences
in the signals to mix with already on-air music or music on another channel. This operation can be
accomplished either visually (via the left VU-METER) or by pre-listening via headphones (comparing
both signals successively using the PFL buttons).
Each module additionally features a set of internal jumpers (see fig. 2) which allow you to
reduce the gain range from ±15dB to ±5dB, thus minimizing the risk of damage of transducers in
"high risk" installations.
ATTENTION: The modification of the input gain range must be carried out by a qualified
technician.
10
Hot or direct signal
Cold or inverted signal
Ground
> Pin 2
> Pin 3
> Pin 1