Magnum Dynalab MD-108 - Manual (Page 5)

5
CONTROL FUNCTIONS
The front panel controls consist of the following functions (See the Front Panel Display
illustration on the following page):
POWER: Controls the power to all display functions. All functions are kept in stand-by mode.
Any LEDs on the front that are lit will stay lit.
MUTE: Controls the elimination of inter-station noise. It is recommended that, when receiving
marginal signals, the mute be set to off. This will eliminate intermittent loss of signals
that fall below a specific signal value. The LED located above the station selector knob
indicates when the mute is activated.
STEREO: Controls whether the tuner is operating in Stereo or Mono mode. The LED located
above the station selector knob indicates when the tuner is operating in stereo.
BW1: Controls the IF super narrow setting. This setting should only be used in extreme
reception conditions of adjacent channel problems.
BW2: This setting combines excellent frequency response with high adjacent channel selectivity.
BW3: Controls the ultra wide IF setting and offers the best frequency response.
Note: One of the BW switches must be on for the tuner to operate.
BLEND: In the “ON” mode, the stereo signal strength is sampled continuously in the Blend
monitor circuit. Should the signal strength fall below the level required for full quieting
with maximum stereo separation, the blend circuit will automatically narrow the stereo
separation proportionately to minimize the noise that might otherwise be generated in
the multiplex circuit.
DIM: Used to extend the life of all display components especially the magic eye by reducing
their intensity.
TUNING KNOB: Rotating this control drives a precision ten turn potentiometer that selects the
desired frequency.
METER: The left hand meter displays multi-path, see the section on Reception Aids. The right
hand meter displays signal strength. The higher the reading, the better the reception.
CENTER TUNE MAGIC EYE: Provides a visual display for fine tuning the frequency to
maximize stereo separation and minimize noise. Tune the unit to minimize the shadow
(the light green area). Use the Magic Eye in conjunction with the signal strength meter
to achieve the best response.
FREQUENCY DISPLAY: Displays the frequency that you are tuned to.