Lectrosonics Inc DCHT ユーザーズマニュアル

3

DCHT Block Diagram

I2S

A-D 

Converter

Shunt 

Limiter

Limiter Control

Gain 

Adj

HI/Lo 

Pass 

Filter

Input 

Preamp

Bias Voltage 

0, 2 or 3.6V

Servo Bias 

Supply

Audio

Filters

Keypad

(2) AA 

Batteries

Oscillator

VCTCXO

I2S

Voltage Controlled 

Oscillator

Final 

Amplifier

Control

PLL Ref

Phase Locked Loop

DSP Cloc

k

Switching 

Power 

Supply

Microprocessor

Power 

LED 

Tricolor 

D-A Converter

I + Q 

Baseband 

Signals

Low 

pass 

filters

IQ Modulator

UART

USB 

Jack

Firmware 

Update

Status Ready

Low

Pass

Filter

Buffer

36.864 MHz

IR Port

I2S

A-D 

Converter

Shunt 

Limiter

Limiter Control

Gain 

Adj

HI/Lo 

Pass 

Filter

Input 

Preamp

Bias Voltage 

0, 2 or 3.6V

Servo Bias 

Supply

Audio

Input 

Jack

1 2 3 4 5 6

CHANNEL 1

CHANNEL 2 (analog/digital selectable)

Rate 

Converter