- ページ 12

計測機器 Ceyear 2498DのPDF ユーザーマニュアルをオンラインで閲覧またはダウンロードできます。Ceyear 2498D 15 ページ。 Optical power meter

Section II Working Principle of Optical Power Meter

The working principle diagram is shown in Fig. 3-1. The program-controlled amplifier circuit converts the

measured optical power into a photocurrent proportional to it, and then sends it to an analog-to-digital

converter to convert it into a digital quantity representing the magnitude of the optical power, and further

sends it to the control processing section for calculation and processing, and then sends it for displaying.

The control processing part also performs operations such as zero setting, turning on the laser,

measurement mode conversion, wavelength setting, and corresponding calculation according to the key

operation.

Optical input

Optical

output

Chapter III Main Technical Indicators and Working Principles

Optical input

Light source control

circuit

Figure 3-1 Block Diagram of the 2498C/D optical power meter

EEPROM

data memory

STM32

MCU &

analog-digital

converter

Upper cover plate

component

Key

LCD

Power supply

power-up module

USB

Data

communication

module