JPS6453172A - Characteristic measuring instrument for electronic tuner - Google Patents
Characteristic measuring instrument for electronic tunerInfo
- Publication number
- JPS6453172A JPS6453172A JP645988A JP645988A JPS6453172A JP S6453172 A JPS6453172 A JP S6453172A JP 645988 A JP645988 A JP 645988A JP 645988 A JP645988 A JP 645988A JP S6453172 A JPS6453172 A JP S6453172A
- Authority
- JP
- Japan
- Prior art keywords
- tuner
- gain
- gain control
- tuning voltage
- output
- 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
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
PURPOSE:To measure a tuning voltage and a gain or gain control characteristics in a short time only by making a sweep only once by providing a sweep signal generator which has a prescribed reception frequency range. CONSTITUTION:A 1st output signal (a) of the sweep signal generator 26 is applied to a 2nd local oscillator 25 to determine the reception frequency of a level detector 20. When the tuning voltage and gain are measured, a 2nd output signal (b) of the oscillator 26 is supplied to the tuning voltage input terminal 17 of the electronic tuner 10. The tuning frequency of the tuner 10 is varied momentarily and the output is stored in a memory 28. When the gain control characteristics are measured, the 2nd output signal (b) is supplied to the gain control signal input terminal 8 of the tuner 10 to vary the gain of the tuner 10 momentarily. The output is stored in the memory 28 as well. The tuning voltage, again, and gain control characteristics are measured with the same constitution only by changing the connection of the sweep signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP645988A JPS6453172A (en) | 1987-01-16 | 1988-01-14 | Characteristic measuring instrument for electronic tuner |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP868087 | 1987-01-16 | ||
JP645988A JPS6453172A (en) | 1987-01-16 | 1988-01-14 | Characteristic measuring instrument for electronic tuner |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6453172A true JPS6453172A (en) | 1989-03-01 |
Family
ID=26340599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP645988A Pending JPS6453172A (en) | 1987-01-16 | 1988-01-14 | Characteristic measuring instrument for electronic tuner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6453172A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5243154A (en) * | 1990-10-16 | 1993-09-07 | Mitsubishi Denki Kabushiki Kaisha | Apparatus for controlling a hydraulic elevator |
-
1988
- 1988-01-14 JP JP645988A patent/JPS6453172A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5243154A (en) * | 1990-10-16 | 1993-09-07 | Mitsubishi Denki Kabushiki Kaisha | Apparatus for controlling a hydraulic elevator |
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