JPS60132064U - Modem output level automatic adjustment device - Google Patents

Modem output level automatic adjustment device

Info

Publication number
JPS60132064U
JPS60132064U JP1926884U JP1926884U JPS60132064U JP S60132064 U JPS60132064 U JP S60132064U JP 1926884 U JP1926884 U JP 1926884U JP 1926884 U JP1926884 U JP 1926884U JP S60132064 U JPS60132064 U JP S60132064U
Authority
JP
Japan
Prior art keywords
adjustment device
modem
output level
automatic adjustment
direct current
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
Application number
JP1926884U
Other languages
Japanese (ja)
Inventor
石田　高基
Original Assignee
株式会社リコー
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社リコー filed Critical 株式会社リコー
Priority to JP1926884U priority Critical patent/JPS60132064U/en
Publication of JPS60132064U publication Critical patent/JPS60132064U/en
Pending legal-status Critical Current

Links

Landscapes

  • Facsimile Image Signal Circuits (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

図は、本考案の一実施例を説明するための電気的結線図
である。 １０・・・端局、２０・・・モデム、１１，１□・・・
回線、Ｄ、、Ｄ２・・・フォトダイオード、ＲＹ・・・
直流回路閉結リレー、ＲＥＴ・・・レターコイル、ＩＣ
□・・・バッファ、ＩＣ２・・・アンプ、Ｄｄｓ・・・
光センサ。The figure is an electrical wiring diagram for explaining one embodiment of the present invention. 10... Terminal, 20... Modem, 11, 1□...
Line, D, D2...Photodiode, RY...
DC circuit closing relay, RET...Letter coil, IC
□...Buffer, IC2...Amplifier, Dds...
light sensor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 加圧電話回線等の直流電流が供給される回線に接続して
使用されるファクシミリ等のモデムにおいて、回線を閉
結した時の直流成分を検出する手段と、直流電流の増幅
率を変化する手段とを有し、前記回線の直流成分を検出
して前記増幅率を変化してモデムの送出レベルを調整す
るようにし゛　　たことを特徴とするモデムの送出レベ
ル自動調整装置。In a modem such as a facsimile machine connected to a line to which direct current is supplied, such as a pressurized telephone line, means for detecting the direct current component when the line is closed, and means for changing the amplification factor of the direct current. 1. An automatic transmission level adjustment device for a modem, comprising: detecting a direct current component of the line and changing the amplification factor to adjust the transmission level of the modem.
JP1926884U 1984-02-13 1984-02-13 Modem output level automatic adjustment device Pending JPS60132064U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1926884U JPS60132064U (en) 1984-02-13 1984-02-13 Modem output level automatic adjustment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1926884U JPS60132064U (en) 1984-02-13 1984-02-13 Modem output level automatic adjustment device

Publications (1)

Publication Number Publication Date
JPS60132064U true JPS60132064U (en) 1985-09-04

Family

ID=30508685

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1926884U Pending JPS60132064U (en) 1984-02-13 1984-02-13 Modem output level automatic adjustment device

Country Status (1)

Country Link
JP (1) JPS60132064U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0221853U (en) * 1988-03-22 1990-02-14

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0221853U (en) * 1988-03-22 1990-02-14

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