12
3.3.2 ES Board 02P6271
Figure 3.5 shows the block diagram of the ES board.
Figure 3.5 Block diagram of ES board
The transmitting and receiving amplifier circuits are the same circuits for all frequencies between 15
and 200 kHz except 400 kHz. When the ES board is set to 400 kHz, the connector CN3 is marked
by "400 kHz"
Jumper settings, J1 and J7, depend on the frequency of the ES board and are detected by the CPU on
the MAIN board to generate the transmission signal and 1
st
local carrier signals to the ES board. The
signal from the connector J2 is displayed on the right side screen (H) and the signal from the J1 is
displayed on the left side screen (L) when the dual display mode is selected.
Jumpers, J2 and J8, are set depending on the presence of the ES board.
Transmitting
The transmission output voltage is determined by the VTX voltage which is controlled by the CPU
in accordance with the "SUPPLY VOLTAGE" set on the XDCR SETTING menu.
The maximum output power of the transmission circuit is 3 kW.
TX0 L
TX1 L
TX0 H
TX1 H
TP50
TP49
TP6
TP5
TP48
TP47
TP4
TP1
DIODE
TRAP
DIODE
TRAP
LPF
Filter
Q9 - Q16
Q1 - Q8
TX AMP.
TX AMP.
VTX-H
VTX-L
CR29
CR16
1
3
J4
1
3
J3
U29
U1
TP36
TP37
TP19
TP9
TP42
TP43
TP27
TP28
TP34
TP35
TP8
TP18
TP41
TP26
TP40
TP33
TP16
TP17
TP31
TP32
TP14
TP15
TP30
TP39
TP13
TP12
1st LOCAL H-H
1st LOCAL L-H
TVG - H
TVG - L
2nd LOCAL H-H
2nd LOCAL L-H
V REF
V REF
TRX SIG H-H
TRX SIG H-C
TRX SIG L-H
TRX SIG L-C
17
18
J2
17
18
J1
KP TX0 L
KP TX1 L
1
2
J1
KP TX0 H
KP TX1 H
1
2
J2
TP45
TP7
TRX TVG H-H
TRX TVG L-H
1st LOCAL L-C
1st LOCAL H-C
2nd LOCAL L-C
2nd LOCAL H-C
1st LOCAL H-H
1st LOCAL H-C
2nd LOCAL H-H
2nd LOCAL H-C
1st LOCAL L-H
1st LOCAL L-C
2nd LOCAL L-C
2nd LOCAL L-H
LOCAL 1-H
LOCAL 1-L
LOCAL 2-H
LOCAL 2-L
TP11
TP10
TP46
TP44
TP20
TP21
TP22
TP23
4
6
J1
4
6
J2
J2
J1
VTX-L
VTX-H
TRX TVG L-H
TRX TVG H-H
15
15
20
20
TRXST1 L
TRXST2 L
TRXST1 H
TRXST2 H
13
14
J2
13
14
J1
JP1
JP8
JP7
JP2
Frequency
Up to 200kHz 400kHz
JP1 short open
JP2 short short
JP7 short open
JP8 short short
J2
8
J1
9
11
TP25
TP24
TP3
TP29
12VP
12VA
5VA P
5VA M
V REF
TP2
X
X
Filter
Amp.
Amp.
BPF
BPF
X
X
Filter
Filter
Filter
Filter
246 kHz
246 kHz
246 kHz
246 kHz
11 kHz
246 kHz
TVG REG.
TVG REG.
Buff
e
r
Summary of Contents for FCV-1200L
Page 1: ...COLOR LCD SOUNDER FCV 1200L 1200LM Back ...
Page 14: ...11 Figure 3 4 Block diagram of PWR board 02P6270 ...
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