TABLE OF CONTENTS
About the Release of the TS‑890S ...................................
Features of the TS‑890S ..................................................
Receiver Configuration ....................................................
First Mixer ........................................................................
Roofing Filters ..................................................................
What is a Roofing Filter? .........................................................
Roofing Filters .........................................................................
AGC Circuits ....................................................................
Analog AGC Circuits ................................................................
Optimization Of Gain Distribution ............................................8
Deflection of the S Meter Needle .............................................8
Noise Level ..............................................................................9
RF Gain Adjustment ................................................................9
AGC Off ...................................................................................9
Noise Blankers ...............................................................
Features of the NB1 and NB2 ...............................................
Auxiliary Circuits ............................................................
Medium Wave Band Sensitivity Risers ..................................
IF Circuit for Clean and Stable 100 W Output Power ......
FET Final Amplifier Circuit .............................................
High‑speed Relay‑controlled Antenna Tuner ..................
Linear Amplifier Control .................................................
REMOTE Connector .............................................................
Linear Amplifier Menu Settings ..............................................
ALC .......................................................................................
Transmit Power Limiter ..........................................................18
ALC Operation when an External Device is Connected .........19
DRV Terminal .................................................................
Protections .....................................................................
SWR Protection .....................................................................
Overcurrent Protection ..........................................................
Thermal Protection and Fan Control ......................................
Local Oscillator ..............................................................
First Local Oscillator Signal ...................................................
Signaling Paths ..............................................................
RX Antenna Feature (RX IN / RX OUT Connectors) ..............
Antenna Output Feature (ANT OUT Connector) ....................
TS‑890S User Report ............................................................
MPU Peripherals for Transceiver Control ........................ 28
MPU Peripherals for Application Control ........................ 28
MPU Peripherals for Operation Panel Control ................ 28
Features of TS‑890S DSP Technologies ........................ 29
DSPs and Peripheral Hardware ..................................... 29
Signal Processing in the IF Stage ..................................
IF‑AGC ..................................................................................
AGC Quick Recovery ............................................................
IF Filter ..................................................................................
Interference Rejection ...........................................................
Reception ......................................................................
Demodulation ........................................................................
AF Filter .................................................................................
Audio Peak Filter ...................................................................38
Noise Reduction ....................................................................39
Beat Canceler ........................................................................
Signal Processing by Morse Code Decoder ..........................
Transmission ..................................................................
Modulation ............................................................................
Microphone Gain Control ......................................................
Speech Processors ...............................................................
Other Functions ............................................................. 48
TX/RX Equalizers ..................................................................48
Voice Guidance .....................................................................48
More User‑friendly Bandscope ...................................... 49
Differences with the TS‑990S as an FFT Bandscope ............49
3 Types of Scope Display Modes ...........................................49
Reference Level .....................................................................
Touchscreen Tuning ...............................................................
Gradation Settings .................................................................
Tuning Assist Line, Filter Passband Display and Frequency
Marker ...................................................................................
Display Function for Actual Operation ............................
Meter .....................................................................................
Transmission Digital Meter ....................................................
Filter Scope ...........................................................................
Operability Improvements for Split Operation .................
Split Frequency Configuration By Using the Numeric
Keypad ..................................................................................
Band Direct Key Configuration for Split ..................................
Split Frequency Change By Using the RIT/XIT Knob .............
Split Frequency Reception By Using an External Sub
Receiver ................................................................................
Содержание TS-890S
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Страница 96: ...TS 890S In depth Manual May 17 2019 CA 337W E96 Copyright 2019 All Rights Reserved ...