DP580 Service Manual
Appendix 1 Abbreviations
AMP
Amplify, amplifier
ANT
Antenna
APC
Automatic power control
BPF
Band-pass filter
CTCSS
Continuous tone control squelch system
DCS
Digital code squelch
DEMOD Demodulation
E2PROM Electrically Erasable Programmable Read-Only Memory
HPF
High-pass filter
IDC
Instantaneous deviation control
IF
Intermediate frequency
LED
Light-emitting diode
LNA
Low-noise amplifier
LPF
Low-pass filter
MCU
Micro control unit
MIC
Microphone
MOD
Modulation
MONI
Monitor
PLL
Phase lock loop
PTT
Push-to-talk
RX
Receiver
SPK
Speaker
TCXO
Temperature controlled crystal oscillator
TX
Transmitter
UL
Un-lock
AP
Audio power amplifier
VCO
Voltage control oscillator
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Summary of Contents for DP580
Page 9: ...DP580 Service Manual 4 Circuit Description 4 1 Main Board 6 ...
Page 124: ...DP580 Service Manual Figure 4 Top Layer Layout Drawing of Main Board DP580 01 121 ...
Page 125: ...DP580 Service Manual Figure 5 Bottom Layer Layout Drawing of Main Board DP580 01 122 ...
Page 126: ...DP580 Service Manual Figure 6 Top Layer Layout Drawing of Main Board DP580 02 123 ...
Page 127: ...DP580 Service Manual Figure 7 Bottom Layer Layout Drawing of Main Board DP580 02 124 ...
Page 128: ...DP580 Service Manual Figure 8 Top Layer Layout Drawing of Main Board DP580 05 125 ...
Page 129: ...DP580 Service Manual Figure 9 Bottom Layer Layout Drawing of Main Board DP580 05 126 ...