Icom IC-R10 Service Manual page 13

4-4-2
OUTPUT EXPANDER
1C
(1)
MAIN
UNIT,
IC305
(3}
RF
UNIT, IC2
Pin
number
Description
Outputs
WFM
mode
select signals.
Low
:
When
WFM
is
selected.
Outputs
NFM
mode
select signals.
Low
:
When
NFM
is
selected.
Outputs
AM
mode
select signals.
Low
:
When
AM
is
selected.
Outputs
SSB mode
select signals.
Low
:
When SSB
is
selected.
Outputs
NB
control signals.
Low
;
When NB
function
is
ON.
(SSB/CW mode
only)
Outputs
ANL
control signals.
Low
;
When ANL
function
is
ON.
(AM
mode
only)
Outputs sub-band
regulator control
S-PWC
signals.
Low
:
While
the
bandscope
or
SIGNAVI
functionis activated.
Pin
number
Port
name
Description
BOC
Outputs low-pass
filter
select signal
.
Low
:
When
frequencies
below
1
.9
MHz
are displayed.
B1C
Outputs
bandpass
filter
select signal.
Low
;
When
frequencies
from
1 .9
to
14.9999
MHz
are displayed.
B2C
Outputs
bandpass
filter
select signal.
Low
;
When
frequencies from 15.0
to
29.9999
MHz
are displayed.
BSC
Outputs
bandpass
filter
select signal.
Low
;
When
frequencies from 30.0
to
74.9999
MHz
are displayed.
B7C
Outputs
bandpass
filter
select signal.
Low
;
When
frequencies from 700.0
to
1300.0000
MHz
are displayed.
Outputs
bandpass
filter
select signal.
Low
:
When
frequencies
from 500.0
to
699.9999
MHz
are displayed.
BSC
Outputs
bandpass
filter
select signal.
Low
:
When
frequencies from 200.0
to
499.9999
MHz
are displayed.
B4C
Outputs
bandpass
filter
select signal.
Low
:
When
frequencies from 75.0
to
199.9999
MHz
are displayed.
Pin
number
Port
name
Description
4
V11C
Outputs
VC01
select signals.
Low
;
VC01
(343.3-629.0999
MHz)
is
activated.
5 VI
2C
Outputs
VC02
select signals.
Low
;
VC02
(629.1-799.9999
MHz)
is
activated.
6
VI
3C
Outputs
VC03
select signals.
Low
:
VC03
(800.0-876.7
MHz)
is
activated.
7
N1HC
Outputs
1st
mixer input select signals.
Low
:
When
frequencies from
0.5
to
75
MHz
are displayed.
11
SHIFT
Outputs
2nd
VCO
shift
control signal
for
VC01.
12
ATTC
Outputs attenuator control signals.
Low
:
Attenuator function
is
ON.
14
IFHC
Outputs
1st IF
select signals.
High:
When
frequencies from 340.0
to
999.9999
MHz
are displayed.
Low
:
When
frequencies
from
0.5
to
339.9999
MHz
or
1000.0
to
1300.0
MHz
are displayed.