ICOM S-14217HZ-C1 用户手册

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75

SQL

Input port for [SQL] key (S7).
"Low": While [SQL] is pushed.

76

FUNC

Input port for [FUNC] key (PA BOARD; S1).
"Low": While [FUNC] is pushed.

77

PTT

Input port for [PTT] key. (PA BOARD; S2)
"Low": While [PTT] is pushed.

138

PSET

Outputs transmit power control signal to the 
TX power controller (IC17. pin 3).

139

TRAC

Outputs BPFs tracking control signal to the 
tracking varactor diodes driver (Q32).

141 CTCOUT Outputs CTCSS/DTCS signal to the MIC line.

144

TEMP

Input port for internal temperature of the 
transceiver.

VCC

The same voltage as attached battery pack.

CPU3V

Common 3 V converted from VCC line at the 
CPU3 regulator (IC11).
The converted voltage is applied to the CPU (IC4), 
Re-set IC (IC2), EEPROM (IC1), etc.

+3S

Common 3 V converted from VCCline at the +3S 
regulator (Q3, Q4) controlled by "+3SC" signal 
from CPU (IC4, pin 53) controlled by "PCON" sig-
nal from the CPU (IC4, pin 52).
The converted voltage is applied to the electric 
volume (IC7), VCO BOARD, etc.

+3V

Common 3 V converted from VCCline at the +3V 
regulator (IC10, Q1).
The converted voltage is applied to the R3v 
regulator (Q6), +10 V DC-DC up-converter (Q7, 
Q61, Q62, D3, X4), PLL IC (IC15), D/A converter 
(IC13), etc.

R3V

Rceive 3 V controlled by R3V regulator (Q6) using 
"R3C" signal from the CPU (IC4, pin 44).
The voltage is applied to the FM IF IC (IC15), 1st 
mixer (IC16), 1st IF amplifi er (Q9), RF circuits, etc.

TX3

Transmit 3 V controlled by T3 regulator (Q24-Q26) 
using "TXC" signal from the CPU (IC4, pin 54).
The controlled voltage is applied to the TX power 
controller IC17, Q31, Q50), pre-driver (PA BOARD; 
Q1), microphone amplifi er (IC8), etc.

+10V

Common +10 V boosted at the +10V DC-DC up-
converter (Q7, Q61, Q62, D3, X4).
The boosted voltage is applied to the loop fi lters, 
tracking vactor diodes driver (Q32), etc.

1

FSET

Outputs reference frequency control signal to 
the TCXO (X2, pin 1).

2

MODSET

Outputs modulation level control signal to the 
modulation volume circuit (Q37).

3

DTCSET

Outputs DTCS modulation level control signal 
to the DTCS modulation volume circuit (Q48).