Tips for better fm reception, Selecting fm antennas, Changing the active selection mode (asm) – Sony ST-SA50ES User Manual

Page 10: To set the ant att manually, To set the if band manually, To set the fm mode manually, Checking the signal strength, Advanced tuner operations

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Advanced Tuner Operations

Tips for Better FM Reception

This tuner has various functions designed for better

reception. First, try to receive stations with the

standard settings. If the reception is not good, try
altering the reception quality to obtain a clear signal.
The tuner stores the following adjustments together
with the frequency when you make a station preset.

ANTENNA IF BAND FM MODE

—

DISPLAY ASM ANT ATT

Selecting FM antennas

When you use two FM antennas, press ANTENNA to
select FM ANTENNA terminal A or B. By selecting the
antenna, you may be able to receive a station that
cannot be received otherwise.

Changing the Active Selection Mode (ASM)

Press ASM.
The ASM indicator appears in the display. This tuner's
Active Selection Mode (ASM) is factory preset to find
the best antenna attenuator (ANT ATT), intermediate
frequency band (IF BAND), and FM MODE settings for
each frequency automatically. You can, however,
choose each setting manually according to your
preference. If you don't want to use the ASM function,
turn it off by pressing ASM again.

To set the ANT ATT manually

Press ANT ATT.

The ANT ANN indicator lights in the display. Turn the

antenna attenuator on to lower the level of the signal

from FM stations with extremely high signal output

levels (more than 70 dB). During normal use, however,

this function should be off.

To set the IF BAND manually

Press IF BAND.

The NARROW indicator lights in the display. Changing

the intermediate frequency band to "Narrow" improves

selectivity and reduces interference to make broadcasts

with weak signals easier to listen to. When the indicator

is off, the unit tunes only the stations with high sound

quality and low distortion.

To set the FM mode manually

Press FM MODE a few times to choose the reception

mode. Select either Auto stereo (no indication), HI-

BLEND, or MONO.

• Auto stereo mode receives stereo broadcasts with

strong signals. Press FM MODE until both "HI-

BLEND" and "MONO" disappear.

• "HI-BLEND" reduces noise in the high frequencies.

You can receive stereo broadcasts with less noise, but

the stereo sound quality will be slightly diminished.

• "MONO" receives stations with weak signals.

Stations will be received in monaural but with even

less noise.

Checking the signal strength

You can use the digital signal meter to check the
signal strength of EM frequencies. The display
range of the digital meter is from 16 to 70 dB (1 p'V
of radio frequency voltage = 0 dB). To obtain a
signal to noise ratio sufficient for receiving a stereo
broadcast, we recommend a reading greater than
50 dB. (You can also change the FM MODE while
using the signal meter to determine the best
reception.)

Tune in an FM station.

Press DISPLAY repeatedly to display the

digital signal meter

Rotate the FM antenna to obtain the strongest

signal.