JPS5557106A - Automatic offset system for recorder - Google Patents
Automatic offset system for recorderInfo
- Publication number
- JPS5557106A JPS5557106A JP12938078A JP12938078A JPS5557106A JP S5557106 A JPS5557106 A JP S5557106A JP 12938078 A JP12938078 A JP 12938078A JP 12938078 A JP12938078 A JP 12938078A JP S5557106 A JPS5557106 A JP S5557106A
- Authority
- JP
- Japan
- Prior art keywords
- measured
- age
- converter
- ein
- instruments
- 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.)
- Granted
Links
Landscapes
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
Abstract
PURPOSE: To secure an accurate and quick recording for the characteristic change with age of the measured instruments by securing an automatic offset adjustment to subtract the absolute value output signal in case the characteristic change with age is measured for the measured instruments.
CONSTITUTION: With turning on of bias calibration switch 13 while measured signal eIN is supplied to comparator circuit 11 from the measured instrument, up-counter 15 is reset. And the counting is started from 0 with every input of clock signal CLK, and the count value is memorized and held. Accordingly, offset voltage ef of D/A converter 12 increases gradually. And the counting action is stopped when eIN< ef is secured, and the value of ef is held at converter 12. As a result, signal eIN and voltage ef of converter 12 are supplied to differential amplifier 19, and the absolute value output signal of the measured instruments is subtracted automatically to deliver voltage e0 showing the change with age.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53129380A JPS5817408B2 (en) | 1978-10-20 | 1978-10-20 | Automatic offset method of recording device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53129380A JPS5817408B2 (en) | 1978-10-20 | 1978-10-20 | Automatic offset method of recording device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5557106A true JPS5557106A (en) | 1980-04-26 |
JPS5817408B2 JPS5817408B2 (en) | 1983-04-07 |
Family
ID=15008141
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53129380A Expired JPS5817408B2 (en) | 1978-10-20 | 1978-10-20 | Automatic offset method of recording device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5817408B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62155317U (en) * | 1986-03-26 | 1987-10-02 | ||
JPS6432116A (en) * | 1987-07-29 | 1989-02-02 | Hioki Electric Works | Zero adjusting circuit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4974079A (en) * | 1972-11-14 | 1974-07-17 |
-
1978
- 1978-10-20 JP JP53129380A patent/JPS5817408B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4974079A (en) * | 1972-11-14 | 1974-07-17 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62155317U (en) * | 1986-03-26 | 1987-10-02 | ||
JPS6432116A (en) * | 1987-07-29 | 1989-02-02 | Hioki Electric Works | Zero adjusting circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS5817408B2 (en) | 1983-04-07 |
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