Stereo Micro/Line Input Module - Ecler SCLAT100 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 600) and be monophonic. For non-
balanced operation, Pin 3 must be shorted to ground.
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...)
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.
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