JPS5514578A - Adjusting unit of recording bias level of tape recorder - Google Patents
Adjusting unit of recording bias level of tape recorderInfo
- Publication number
- JPS5514578A JPS5514578A JP8791978A JP8791978A JPS5514578A JP S5514578 A JPS5514578 A JP S5514578A JP 8791978 A JP8791978 A JP 8791978A JP 8791978 A JP8791978 A JP 8791978A JP S5514578 A JPS5514578 A JP S5514578A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- maximum
- recording
- level
- knob
- 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
Abstract
PURPOSE: To make easy the adjustment of recording level with the illumination of display element, by changing the level of the recorded bias signal from maximum to minimum value and performing the recording and reproduction on the tape while changing again from maximum to minimum value.
CONSTITUTION: The 400 Hz signal is fed to the input of the line amplifier 1 and the knob of the variable resistor of the bias adjusting circuit 6 is set to the maximum position. After that, by turning the knob from the maximum to the minimum position, the recording head 7 receives the 100 KHz signal of which level is changed from the maximum to minimum value superimposed with the 400 Hz signal and the result is recorded on the tape 8. Further, this recorded signal is reproduced with the reproducing head 9 and the DC signal A corresponding to the envelope of the reproducing signal and the peak hold signal B indicating the peak value are compared at the comparison circuit 14. The recording level is adjusted to optimized value by stopping the turning at the illumination time of the display element 18 while turning the knob of the variable resistor as mentioned above.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8791978A JPS6011366B2 (en) | 1978-07-18 | 1978-07-18 | Tape recorder recording bias level adjustment device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8791978A JPS6011366B2 (en) | 1978-07-18 | 1978-07-18 | Tape recorder recording bias level adjustment device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5514578A true JPS5514578A (en) | 1980-02-01 |
JPS6011366B2 JPS6011366B2 (en) | 1985-03-25 |
Family
ID=13928320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8791978A Expired JPS6011366B2 (en) | 1978-07-18 | 1978-07-18 | Tape recorder recording bias level adjustment device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6011366B2 (en) |
-
1978
- 1978-07-18 JP JP8791978A patent/JPS6011366B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6011366B2 (en) | 1985-03-25 |
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