Maintenance & Inspection
6-3
(1) NTD-2150 150W Transceiver
Unit Name Test Item Contents Results
Transceiver
ATU
Serial I/F :Serial communication
Band1-Input :2140 kHz input value
Band1-Tune :2140 kHz tuning operation
Band2-Input :4149 kHz input value
Band2-Tune :4149 kHz tuning operation
Band3-Input :6230 kHz input value
Band3-Tune :6230 kHz tuning operation
Band4-Input :8297 kHz input value
Band4-Tune :8297 kHz tuning operation
Band5-Input :16546 kHz input value
Band5-Tune :16546 kHz tuning operation
Band6-Input :25118 kHz input value
Band6-Tune :25118 kHz tuning operation
OK: Normal
NG: Abnormal
PA
PA mute port :Confirmation of PA diagnosis
viability
RBK port :RBK overcurrent detection
Memory1 :EEPROM1 operation
Memory2 :EEPROM2 operation
Band1-Output :2140 kHz output
Band2-Output :4149 kHz output
Band3-Output :6230 kHz output
Band4-Output :8297 kHz output
Band5-Output :16546 kHz output
Band6-Output :25118 kHz output
Input voltage :Input signal from TRX
OK: Normal
NG: Abnormal
TRX
Memory :EEPROM operation
Digital CKT :FPGA operation
BK port :BK signal state
PLL lock :State of PLL for DDS/DUC
clock
Band1-TX output
:1600 kHz output
Band2-TX output
:22000 kHz output
Band3-TX output
:27500 kHz output
Band4-TX output
:RX diagnosis circuit
Band1-RX BPF1
:1600 kHz Rx level
Band2-RX BPF2
:390 kHz Rx level
Band3-RX BPF3
:1590 kHz Rx level
Band4-RX BPF4
:3190 kHz Rx level
Band5-RX BPF5
:6090 kHz Rx level
Band6-RX BPF6
:10490 kHz Rx level
Band7-RX BPF7
:17990 kHz Rx level
Band8-RX BPF8
:27500 kHz Rx level
OK: Normal
NG: Abnormal
WKR
MODEM
Memory1 :FROM operation
Memory2 :EEPROM operation
Memory3 :SDRAM operation
PLL lock :State of PLL for DDS clock
Band1-RX BPF1
:2187.5 kHz DSC loop
Band2-RX BPF2
:4207.5 kHz DSC loop
Band3-RX BPF3
:6312.0 kHz DSC loop
Band4-RX BPF4
:8414.5 kHz DSC loop
Band5-RX BPF5
:12577.0 kHz DSC loop
Band6-RX BPF6
:16804.5 kHz DSC loop
Band7-RX BPF7
:Wide-band filter operation
DSC/NBDP Loop1 :AF modem loop
DSC/NBDP Loop2 :AF modem & TRX loop
OK: Normal
NG: Abnormal
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