JPH02150574U - - Google Patents
Info
- Publication number
- JPH02150574U JPH02150574U JP6028389U JP6028389U JPH02150574U JP H02150574 U JPH02150574 U JP H02150574U JP 6028389 U JP6028389 U JP 6028389U JP 6028389 U JP6028389 U JP 6028389U JP H02150574 U JPH02150574 U JP H02150574U
- Authority
- JP
- Japan
- Prior art keywords
- section
- current
- gain
- output
- converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000003321 amplification Effects 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Description
第１図は本考案に係る光パワーメータの一実施
例の接続図、第２図は第１図の動作を説明するた
めのフローである。
ＰＤ……光・電流変換部、ＩＶ……電流・電圧
変換部、ＣＯＰ……コンパレート部、ＰＧＡ……
可変利得増幅部、Ａ／Ｄ……アナログ・デイジタ
ル変換部、ＣＰＵ……演算制御部、ＤＩＳ……表
示部。
FIG. 1 is a connection diagram of an embodiment of the optical power meter according to the present invention, and FIG. 2 is a flowchart for explaining the operation of FIG. 1. PD...Light/current conversion section, IV...Current/voltage conversion section, COP...Comparator section, PGA...
Variable gain amplification section, A/D...analog-digital conversion section, CPU...computation control section, DIS...display section.
Claims (1)
光・電流変換部、その利得が複数段階に可変でき
前記光・電流変換部の出力が与えられる電流・電
圧変換部、この電流・電圧変換部の出力を監視す
るコンパレート部、その利得が複数段階に可変で
き前記電流・電圧変換部の出力が与えられる可変
利得増幅部、この可変利得増幅部の出力をデイジ
タル信号に変換するアナログ・デイジタル変換部
、このアナログ・デイジタル変換部の出力と前記
コンパレート部の出力が与えられる演算制御部、
及びこの演算制御部の出力データを表示するデイ
ジタル表示部を具備し、 前記電流・電圧変換部の利得が不適性の場合に
可変利得増幅部の利得を最少にすると共に電流・
電圧変換部の利得を１ステツプずつ変化させて適
正な利得を得たのち、前記アナログ・デイジタル
変換器の出力データから可変利得増幅部の適正な
利得を前記演算制御部で演算により求めるように
構成したオートレンジ手段を有する光パワーメー
タ。[Claims for Utility Model Registration] A light-to-current converter that receives input light and generates a corresponding current, and a current-to-voltage converter whose gain can be varied in multiple stages and the output of the light-to-current converter is given. a comparator section that monitors the output of this current/voltage converter section; a variable gain amplification section whose gain can be varied in multiple stages and to which the output of the current/voltage conversion section is given; an analog-to-digital converter for converting into a signal; an arithmetic control unit to which the output of the analog-to-digital converter and the output of the comparator are applied;
and a digital display section for displaying output data of the arithmetic control section, and when the gain of the current/voltage conversion section is inappropriate, the gain of the variable gain amplifier section is minimized and the current/voltage conversion section is
After obtaining an appropriate gain by changing the gain of the voltage conversion section one step at a time, the calculation control section calculates an appropriate gain of the variable gain amplifier section from the output data of the analog-to-digital converter. Optical power meter with automatic range means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6028389U JPH02150574U (en) | 1989-05-24 | 1989-05-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6028389U JPH02150574U (en) | 1989-05-24 | 1989-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02150574U true JPH02150574U (en) | 1990-12-26 |
Family
ID=31587516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6028389U Pending JPH02150574U (en) | 1989-05-24 | 1989-05-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02150574U (en) |
-
1989
- 1989-05-24 JP JP6028389U patent/JPH02150574U/ja active Pending