Kenwood TK-90, Руководство по обслуживанию

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TK-90
44
2. Extended I/O Port
2-1. TX-RX unit IC1: BU2099FV
Pin No. Port Name Pin Name Function Active level Condition
6 Q0 BPF4 4.1~7.5MHz BPF L L: Selection
7 Q1 BPF5 7.5~10.5MHz BPF L L: Selection
8 Q2 BPF6 10.5~14.5MHz BPF L L: Selection
9 Q3 BPF3 2.5~4.1MHz BPF L L: Selection
10 Q4 BPF1 30k~1.605MHz BPF L L: Selection
11 Q5 BPF7 14.5~21.5MHz BPF L L: Selection
12 Q6 BPF8 21.5~30MHz BPF L L: Selection
13 Q7 BPF2 1.605~2.5MHz BPF L L: Selection
14 Q8 FANH Fan motor control L L: High speed
15 Q9 FANL Fan motor control L L: Low speed
16 Q10 ATT Attenuator ON/OFF H H: Attenuator ON
17 Q11 Pre Preamp ON/OFF H H: Preamp ON
2-2. TX-RX unit IC421: BU2099FV
Pin No. Port Name Pin Name Function Active level Condition
6 Q0 TXEQ Equalizer for transmission (High boost) H H: Mic High Boost ON
7 Q1 FSKS FSK Key route changeover (Enable/Disable of RTK) H H: Selcall functional OFF
8 Q2 SCC NC L
9 Q3 AMC Power source of AM mode detection output L L: AM mode
10 Q4 OP500 IF filter passing loss compensation L L: CW filter selection
11 Q5 AGCSLOW AGC time constant changeover H H: AGC slow
12 Q6 AGCOFF AGC circuit OFF/ON H H: AGC reference adjustment mode
13 Q7 5DSW VGS-1 / GPS unit power source ON/OFF H H: VGS-1/GPS unit is used
14 Q8 ALE5DSW KPE-2 power source ON/OFF H H: KPE-2 is used
15 Q9 FILT3 IF Filter 3 selection L L: Option filter selection
16 Q10 FILT2 IF Filter 2 selection L L: Built-in SSB filter selection
17 Q11 FILT1 IF Filter 1 selection L L: Built-in AM filter selection
2-3. FINAL unit IC3: BU2099FV
Pin No. Port Name Pin Name Function Active level Condition
6 Q0 NC
7 Q1 NC
8 Q2 NC
9 Q3 NC
10 Q4 NC
11 Q5 LPF1 1.605~2.5MHz LPF L L: Selection
12 Q6 LPF2 2.5~3.45MHz LPF L L: Selection
13 Q7 LPF3 3.45~5.5MHz LPF L L: Selection
14 Q8 LPF4 5.5~8.2MHz LPF L L: Selection
15 Q9 LPF5 8.2~12.1MHz LPF L L: Selection
16 Q10 LPF6 12.1~18.1MHz LPF L L: Selection
17 Q11 LPF7 18.1~30.0MHz LPF L L: Selection
SEMICONDUCTOR DATA /
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