Japan Radio Co. JSS-2150, Service Manual

Page: 129 / 160

APPENDIX
5-1
5. APPENDIX
5.1 Block diagram
5.1.1 NTD-2150 MF/HF TRANSCEIVER
WKR_ RX
_ANT
DISP_ PW R
GND
GND
RX_IN
WKR_ RX
_OUT
RS -485-A
RS -485-B
GND
DISP_L INE+
DISP_L INE-
DISP _K EY
SYS_R ST
NC
NC
DC 24V+ IN
DISP _PWR
DC 24V- IN
RX_O UT
RXD
TXD
DTR
GND
DSR
RTS
CTS
NC
NC
RS -485-A
RS -485-B
GND
DISP _LI NE-
DISP _LI NE+
ATU _TX D
PA_M UTE
AN T_ CURR
AT U_RX D
GND
GND
GND
GPS _RX -B
GPS _RX -A
24V_D C
RBK
GND
GND
BK_O UT
-BK _IN
LINE _OUT +
LINE _OUT -
LINE _IN+
LINE _IN-
GND
DC
HF
ATU_ TX D
PA_M UTE
ANT_CURR
AT U_24 V
ATU_ RXD
GND
GPS
_RX -B
GPS _RX -A
+BK
-BK
RBK
GND
GND
GND
B1
1 2
GND
GND
EXT_ KEY
SE L_BK
RBK
RBK
GND
GND
To WKR M OM EM UINT
20
25
10 1 15 5
RF_ IN
WKR_ RX_IN
DC_OPE +
DC_OPE -
GND
GND
10 1 15 5 20
DISP _K EY
GND
10 1 15 5 20
10 1 15 5 20 10 1 15 5 20 20 25 10 1 15 5
SEL_ BK
1
DMC_ SEL
DMC_ DRQ
DMC_ PWR
DMC_ RDY
DMC_ DRA
DMC_ DAL
GND
DMC_ DAS
DMC_ OAL
DMC_ OAS
422_R X-A
AME_ RX-A
AME_ TX-A
AME_ RX-B
AME_ TX-B
GND
RMS_ TX -A
RMS_ TX -B
422_R X-B
GND
GND
GND
LINE _OUT +
LINE _OUT -
LINE _IN+
LINE _IN-
GND
EXT_ KEY
R_CONT +
R_CONT -
GND
1 10
B2
1 2
1
2
9
10
19
20
24V_D C
PA_P WR
PA_P WR
GND
To TR X U NIT
TRX _PW R
TRX _PW R
TRX _PW R
TRX _PW R
MODM EM _PW R
MODM EM _PW R
MODM EM _PW R
NC
SYS_ RS T
RBK
GND
10V_D C
GND
24V_D C
PA24 V-
PA24 V+
24V +
24v-
10
BK_E RR