1.1 Interface Overview
The GTP-860’s front panel is designed for ease of
operation. All controls are logically grouped for easy,
intuitive operation. Familiarize yourself with the preced-
ing diagram and read the short explanations of each fea-
ture below. When you finish, you will be well on your way
to enjoying the GTP-860’s convenience and sound quality.
[1] Power Button
Depress the Power button to switch the preamplifier to
its ‘Stand-By’ mode. The amber LED in the power button
will light up. On the front panel, press any of the input
selector buttons [11] to switch the preamplifier on. From
the remote control, press the power button [30] to switch
the unit on (see remote diagram, page 20). The display
will light up indicating which input was selected and the
power button LED will turn red.
Pressing the Power switch again will turn the unit OFF
completely. The GTP-860 preamplifier uses a memory
back-up system to store surround sound trim settings and
preset station information for the tuner section. This
information is retained for several weeks, even if the unit
is switched off completely or unplugged.
Press the Remote Control Power button [30] to switch the
unit from Operating to Stand-By mode. Press this button
again to switch to Unit On from Stand-By; the last select-
ed source will be indicated in the display.
The Power Button LED will light up amber when the
preamplifier is switched On, but in Stand-By mode.
NOTE: In Stand-By mode the GTP-860 uses very little power.
However, it is recommended that you switch the unit com-
pletely off if it is not going to be used for more than a couple
of days. Switch off completely by pressing the Power button on
the front panel. All lights will extinguish. When the GTP-860
is plugged into the wall current may still be flowwing into the
transformer. Only when the GTP-860 is unplugged is all current
into the device stopped.
[2] Display Button
The GTP-860 supports RDS PS and RDS RT. With stations
carrying RDS information, “RDS” will light up in the
display panel, and the station’s RDS name is automatically
displayed (RDS PS).
Some radio stations, which support RDS, also transmit
additional information, known as Radio Text (RDS RT).
To view this information, use the Display button.
With stations carrying RDS information, the Display
button scrolls between three different display modes,
each successive push of the button engages the next one
of the three modes:
a) In the default mode, the station’s RDS name is
displayed, Program Service (PS; normally the station’s
calling letters, WXYZ, for instance).
b) From the default mode, press the button once to view
Radio Text (RT). This can be additional information such
as the presenter’s or program’s name; what song is play-
ing, etc. This text scrolls continuously over the 8 alpha-
numeric display segments. It takes a few seconds for the
tuner to gather the RT information, so immediately after
tuning to a station and selecting to view RT the display
will indicate “NO TEXT” and default to the station name.
If no RT information is available, the display will also
show “NO TEXT” for three seconds before reverting to the
default mode.
c) Press the Display button from the RT mode to display
the station frequency. Press again to return to the default
mode (a).
When the Display button is pressed when tuned to a non-
RDS station, the display will show “NO NAME” for three
seconds before reverting to the default display.
The Display button also has a secondary function: When
pressed and held for three seconds, the front panel dis-
play will dim. Press and hold the button again to turn the
display off, and again to set the display back to its
original brightness.
[3] FM Mute/High Blend Button
This button combines two functions; it switches the tuner
from Stereo to Mono and disengages the muting circuitry
at the same time. The muting circuit will mute the tuner
in between radio stations when searching or tuning to
avoid tuning noise.
ADCOM GTP-860 OWNER’S MANUAL | 7