19
Test Point
TP Name
Measuring
Remarks
TP17
VTX L G
Switching signal
TP18
-VIN(P0V)
See Chapter.5
Negative line of ship's main
TP19 GND
0V
TP20
VTX L
+B Voltage supplied to transmission amplifier (low)
TP21
VTX H
+B Voltage supplied to transmission amplifier (high)
TP22 P5V
5.0
+
0.25V
TP23
P12V
11.75 to 12.20 V
TP24
-5V
-4.75 to -5.25 V
TP25
+12VD
11.0 to 16.0 V
TP26
VTX CONT L
1.35 to 5.0 V
VTX CONT = (VTX + 3 ) x 5/133
TP27
VTX CONT H
1.35 to 5.0 V
VTX CONT = (VTX + 3 ) x 5/133
TP28 GND
0
V
LED
LED
Color Name
Functions
CR10
GREEN VTX
L ON when internal transceiver unit for high freq. is selected
CR19
GREEN +5V Always ON ( +5 V output)
CR20
RED
OVER CUR
Normally OFF ( over current indicator )
CR21
GREEN VTX
L ON when internal transceiver unit for low freq. is selected
CR26
RED
IN HL
Normal OFF ( ON when abnormal ship's main is detected )
Adjuster
Adj. Name
Functions
R86
+5V ADJ
Adjust s+5V at test point TP22 (P5 V)
R69
VTX L ADJ
Adjusts VTX L voltage. Voltage at TP20 is identical with "Supply Voltage of XDCR
Setting Menu (Low)
R20
VTX H ADJ
Adjusts VTX H voltage. Voltage at TP21 is identical with "Supply Voltage" of XDCR
Setting Menu (High).
R93
PSYNC ADJ
Adjusts waveform of Power Sync. signals
Содержание FCV-1200L
Страница 1: ...COLOR LCD SOUNDER FCV 1200L 1200LM Back ...
Страница 14: ...11 Figure 3 4 Block diagram of PWR board 02P6270 ...
Страница 36: ...33 TP26 22 5792 MHz TP27 DDS1 SCLK TP28 KPOS TP30 KP1 TP31 TX0 L TP33 TX1 L 5 Vpp 5 V 5 V 5 V 5 V 5 V ...
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