TS-590S
26
Ref. No.
Use / Function
Operation / Condition / Compatibility
D443
Switching
ON when RX 1st IF of 73.095MHz
is selected
D461~464
Noise Blanking
ON when BLNK signal is “H”
D471
Switching
1/2: ON when 15kHz IF fi lter is
selected
2/2: ON when 6kHz IF fi lter is
selected
D472
Switching
1/2: ON when 10.695MHz 2.7kHz
IF fi lter is selected
2/2: ON when 11.374MHz 2.7kHz
IF fi lter is selected
D473
Switching
ON when 500Hz IF fi lter is se-
lected
D474,475
Switching
1/2: RX/TX changeover, ON during
reception
2/2: RX/TX changeover, ON during
transmission
D476
Switching
1/2: ON when 15kHz IF fi lter is
selected
2/2: ON when 6kHz IF fi lter is
selected
D477
Switching
1/2: ON when 10.695MHz 2.7kHz
IF fi lter is selected
2/2: ON when 11.374MHz 2.7kHz
IF fi lter is selected
D478
Switching
ON when 500Hz IF fi lter is se-
lected
D521
Voltage shift
Reference voltage of AGC control
attenuator
D522~524
Attenuator
AGC control attenuator
D525
Attenuator
IF gain adjustment
D526
Switching
1/2: ON when RX FM mode is
selected
2/2: ON when RX AM/ SSB/ CW/
FSK mode are selected
D551,552
RX Mixer
Receiving 3rd mixer (10.695MHz/
11.374MHz
→
24kHz)
D571
Switching
1/2: ON when RX FM mode is
selected
2/2: ON when RX AM/ SSB/ CW/
FSK mode is selected
D586,587
Clipper
FM detection IC input
D660
-6V DC/DC
Stabilizes negative power source
to –6V
D661
Rectifi er
Creates negative voltage
D662
Detection
Noise blanker switching pulse
detection
D663
Reverse current
prevention
Main IBK and NB mute signal
matching, main side mute when
ON
D701
Switching
1/2: ON when TX AM/ SSB/ CW/
FSK mode is selected
2/2: No connection
D702
Reverse current
prevention
ON during TX FM mode
D721
Attenuator
TGC control attenuator
Ref. No.
Use / Function
Operation / Condition / Compatibility
D722,723
Switching
RX/TX changeover, ON during
transmission
D741
Attenuator
PGC control attenuator
D761,762
Switching
RX/TX changeover, ON during
transmission
D781
Switching
1/2: ON when drive output is
selected
2/2: ON when ANT connector is
selected
D782
Switching
ON when transmitting over
1.705MHz
D783
Switching
ON when transmitting from
30~522kHz
D799,800
Surge absorption
Drive output terminal
D801
Power control
D802
Reverse current
prevention
External ALC voltage
D803
Reverse current
prevention
VSR signal line
D806
Reverse current
prevention
External ALC voltage
D807
Current protec-
tion
Reduce power at over current
D808
Power control
Reduce power at high voltage
D809
Reverse current
prevention
VSR signal line
D810~812
Voltage shift
Creates a reference voltage
D813
Power control
ALC signal line
D841~843
Reverse current
prevention
CKY signal line
D861,862
Reverse current
prevention
Meter circuit
COMPONENTS DESCRIPTION
Содержание TS-590S
Страница 143: ...TS 590S 143 MEMO ...