Terminal Function; Accessory Units - Kenwood TS-990S Service Manual

TS-990S
Accessory (SCOPE) unit (X42-3430-00
A/10)
Pin No. Name I/O
CN1 (to DC-DC unit A/3 CN170)
1 14S I Power supply (14V)
2 GND - GND
3 8A I Power supply (8V)
CN2 (to RX unit A/2 CN109)
1 SC08M I Main RX 8M IF signal input (Coaxial)
CN3 (to TX-RX unit A/2 CN350)
1 SC11S I Sub RX 11M IF signal input (Coaxial)
CN4 (to TX-RX unit A/2 CN450)
1 SC73S I Sub RX/TX 73M IF signal input (Coaxial)
CN6 (to PLL (MAIN) unit CN20)
1 SCREF I Reference 40MHz input (Coaxial)
CN35 (to Control unit CN73)
1 8A O 8V (DC/DC)
2 NC - No connection
3 GND - GND
4 NC - No connection
5 5A I 5V (DC/DC)
6 NC - No connection
7 33SD I 3.3V (DC/DC)
8 X45V1 O Version detection signal
9 IFSEL1 I IF select 1
10 IFSEL2 I IF select 2
11 IFSEL3 I IF select 3
12 IFSEL4 I IF select 4
13 SCATT0 I Attenuator 0 control
14 SCATT1 I Attenuator 1 control
15 SCATT2 I Attenuator 2 control
16 SCATT3 I Attenuator 3 control
17 SCPCK I Serial clock
18 SCPDT I Serial data
19 SCPEN1 I PLL1 (IC4) enable signal
20 SCPEN2 I PLL2 (IC6) enable signal
21 SCDEN1 I DDS1 (IC1) enable signal
22 SCDEN2 I DDS2 (IC2) enable signal
23 SCDEN3 I DDS3 (IC3) enable signal
24 SCPUL O Unlock detection
CN36 (to Control unit CN453)
1 SCIF O Scope IF output (24kHz)
2 GND - GND
210

TERMINAL FUNCTION

Function
Accessory (PRESEL) unit (X42-3430-00
B/10)
Pin No. Name I/O
CN401 (to RX unit A/2 CN26)
1 PREI I RF input (Coaxial)
CN402 (to RX unit A/2 CN70)
1 33S I 3.3V (DC/DC)
2 CLK I Serial clock
3 DATA I Serial data
4 PSEDA I EEPROM data output
5 PSESI O EEPROM serial data input
6 PSECK I EEPROM clock
7 PSEEN I EEPROM enable
8 PSEN I PRESEL Serial/Parallel IC enable
9 PSEL I PRESEL ON
10 GND - GND
11 GND - GND
12 X55V2 - Accessory (PRESEL) unit version control
13 8A I 8V (DC/DC)
14 8A I 8V (DC/DC)
15 NC - No connection
16 14S I 13.8V (DC/DC)
CN446 (to RX unit A/2 CN53)
1 PREO O RF output (Coaxial)
Accessory (MIC) unit (X42-3430-00 C/10)
Pin No. Name I/O
CN601 (to DSP unit CN668)
1 MIC O MIC signal
2 MSG - MIC GND
3 MCG - GND
CN602 (to Display (MAIN PANEL) unit A/6 CN264)
1 MU O MIC up control
2 MD O MIC down control
3 SS O PTT control L: TX
4 8A I 8V (DC/DC)
J601 (MIC)
1 MIC I MIC signal
2 SS I PTT control L: TX
3 MD I MIC down control
4 MU I MIC up control
5 8A O 8V (DC/DC)
6 NC - No connection
7 MSG - MIC GND
8 MCG - GND
Function
Function