Table of Contents
Advertisement
• IC Block Diagrams
IC1 IR3N74AN (BASE MAIN Board)
IC602 IR3N74AN (HAND MAIN Board)
12
11
10
+
VREF
–
–
MUTE
LIMITER
+
VREF
–
+
+
VREF
MUTE
–
∆G
1
2
3
4
IC3 MC3361CD (BASE MAIN Board)
IC601 MC3361CD (HAND MAIN Board)
MIXER
SCAN
SQUELCH
FILTER
FILTER
RECOVERED
MUTE
OUTPUT
INPUT
INPUT
GND
CONTROL
IN
15
14
13
12
11
10
16
_
AF
FILTER
+
AMP
AMP
SQUELCH TRIGGER WITH
+
HYSTERESIS
DEMODULATOR
LIMITER
+
AMP
MIXER
OSCILLATOR
1
2
4
3
5
6
7
8
QUAD
MIXER
VCC
LIMITER
COIL
CRYSTAL
OUTPUT
INPUT
DECOUPLING
OSC
IC5 MC34018P (BASE MAIN Board)
28
27
26
25
24
ATT
CONTROL
RECEIVE
ATT
TRANSMIT-RECEIVE
COMPRESSOR
TRANSMIT DET
TRANSMIT
COMPRESSOR
VCC
LOG AMP
TRANSMIT
VB
RECEIVE
ATT
LOG AMP
–
+
MIC AMP
2
3
5
6 7
8
9
1
4
9
8
7
VREF
∆G
+
–
REGULATOR
5
6
AUDIO
9
23
22
21
20
19
18
17
16
15
VB
VCC
REG
REG
VCC
PEAK
LIMITER
VB
VTH
VB
+
+
SP AMP
+
–
–
+
–
–
10
11
12
13
14
– 43 –
IC302 M64884FP-C60J (BASE RF Board)
IC502 M64884FP-C60J (HAND RF Board)
24
23
22
21
20
19
18
17
VCO (RX)
MIX
PHASE
PULSE
DETECTOR
COUNTER
LATCH
LATCH
SELECT
1/32, 1/33
PROGRAMMABLE
PRESCALER
DEVIDER
SHIFT
REGISTOR
LATCH
PROGRAMMABLE
DEVIDER
LATCH
1/16, 1/17
PROGRAMMABLE
1/2
PRESCALER
DEVIDER
PHASE
OSC &
VCO (TX)
DETECTOR
1/2 DEVIDER
7
8
9
10
1
2
3
4
5
6
IC604 TK11130SCL (HAND MAIN Board)
5
4
REGULATOR
THERMAL
SENSOR
VOLTAGE
COMP.
COMP.
CONTROL
BANDGAP
REFERENCE
1
2
3
16 15
14
13
LOCK
DETECTOR
11
12
IC605 XC612N3328MR (HAND MAIN Board)
5
4
COMP.
REFERENCE
VOLTAGE
COMP.
1
2
3
– 44 –
Advertisement
Table of Contents
