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--------~Internal
System Alignment
I~outine
The remainder of the FT-2200 alignment is
accomplished by recalling a special routine
programmed in the transceiver CPU. This
alignment routine simplifies many previously
complex discrete component settings and ad-
justments with digitally-controlled settings via
front panel buttons and LCD indications.
Transceiver adjustments using this routine
include:
S-Meter Adjustment (Sl, S-9)
Squelch Preset (threshold, tight)
Scan Center-Stop(+,-)
Power Output Adjustment (Hi/Mid/Lo)
To call the routine program, set the trans-
ceiver to 146.000 IviHz, then turn the trans-
ceiver off. Next press and hold the Lf)w,
~
LOCK
and
ACC
button on the microphone
to~ether
while powering the radio on again
(O ).
The alignment routine is now active, and the
display will now appear as below, indicating
the first adjustment setting (all S-meter seg-
ments).
. ,
t
,-.c.
.. - t.l
I
I
.:J
1
t
0
Lf
In the alignment routine, each adjustment is
selected in sequence by{zressing the M()zbutton.
M
PRI
Repeatedly pressing
P~lz
will step through a
total of nine setting adjustments, as listed
above. In the memory box "
:=:
d
11
will appear
blinking, indicating the currently selected set-
ting can be adjusted. At this point, alignment is
performed by injecting a signal of a required
frequency or level, transmitter output power
level adjustments are performed using the
DIAL
knob.
Pressing
coL
after a level setting or adJ"ust-
DTMF
ment has been made writes the entry into
memory, to exit the alignment sub-routine and
return the display indications to normal, press
~~:-After
performing the system alignment in
it's entirety, individual settings can be returned
to and adjusted should the need arise.
S-Meter Adjustment
Full-Scale Adjust (all segments)
. ,
t
.-.c.
If
you haven't done so already, perform the
power-on key combination as previously de-
scribed, then press
"' o z ("
:=:
d
I I
blinking).
PRI
Inject +25 dBJ.l RF signal (
±
3.5 kHz devia-
tion at 1-kHz) at the antenna input, press
COL
to
Ml:i
DTMF
save the setting, then
oz
to step to the next
PRI
setting.
Low-Scale Adjust (single segment)
. ,
t
.-.c.
I
t.l
I
I
f
•tOLf
Adjust the signal generator level 0 dB, then
CALL
MHz
P
ress
o => o.
DTMF
PRI
Squelch Preset
Threshold
. ,
I
.-.c.
COt_
L
-f
f L 'f
Adiust the level for a -16 dB signal, then
6ALL
MHZ
P
ress
o => o.
DTMF
PRI
-----------------------------------------------------------------2-7
FT-2200 Technical Supplement
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