【Digital】Radio, Desheng PL380 tutorial and precautions

1. Main interface function introduction (note the alarm clock and automatic shutdown)

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  • Red button:
    press power to turn on, press to turn off.
    There is a hole in the long press, if it is not this symbol, it means that he has an automatic shutdown time, send .
    However, sleep is on at this time , so you need to pay attention.
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  • The four buttons in the upper left corner (system settings):
    1. Light up, and the backlight will light up when you press it (useless).
    2. Keypad lock , power on and off can be used. Press and hold the switch lock for a long time, once locked, other buttons cannot be used ( to prevent accidental pressing of other buttons when putting it in the schoolbag ).
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    3. TIME: Adjust the time, press and hold the keyboard to adjust the time. (It's useless)
    4. ALARM: Alarm clock , don't have this horn or bell button (otherwise the alarm clock is turned on)
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  • There are two small buttons on block 6:
    1. Display, press to switch the red part .
    The signal-to-noise ratio including signal strength (the bigger the better anyway), can be switched to time/alarm clock, temperature and the like.
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    2. FM-ST Stereo
    Press once to turn on the stereo, press once to turn off.
    It is mainly the stereo sound when the earphone is plugged in, and the left side shows whether it is turned on .
    Because this has certain requirements on the signal strength, try to turn it off in the test.
    At the same time, press and hold this button to turn off the backlight .
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  • Block 6: Exam Press FM to switch to standard mode .
    FM: radio station (commonly used, for exams),
    SM medium wave (old-fashioned radio station), LW long wave (aviation channel),
    SW short wave, adjust up and down.
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  • Frequency search mode:
    ETM, automatic frequency search, ETM is displayed on the right, and all the channels that are scrolled up and down after the search are found.
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    VF, it flashes twice after being pressed , and then ETM disappears.
    Enter manual mode, 0.01 or 0.1 roll, switch by yourself.
    If you press it for a long time , it will search the frequency manually, and stop at the place where he thinks there is a channel, and press VF again to stop the search .
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    VM is saved manually.
    In VF mode, enter a certain channel, such as 90.00.
    Press and hold M, then enter the number, and press Enter.
    Then you can find it in the channel of the VM.
    If you don’t want it, press and hold Enter in the corresponding channel, DEL will appear, and then delete it.
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  • Settings in shutdown mode
    1. Press and hold when shutdown to adjust the frequency range .
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    2. Adjust the 12-hour and 24-hour format.
    3. 9/10khz, American channel radio station, mainly only affects the temperature, and has no effect on others.
    4. Long press the alarm button to turn off the beeping sound of each click.

2. Matching of battery and battery mode

  • Shut down and press the M key to switch the battery mode .
    Rechargeable battery (Ni-MH) battery.
    Dry cell, normal battery shape.

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Need to distinguish between the two battery modes

  • Otherwise, long-term storage will cause corrosion and leakage.
  • At the same time, when plugging him into the socket for charging, the system identification is different (one is used for power supply and the other is used for charging, which will also cause leakage)

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battery maintenance

  • Do not leave the dry battery for too long, and do not need to remove it
  • Otherwise, fluid may leak.

3. Radio antenna and signal, earphone and noise

Only when it is written and played can the signal be good.

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Note that when indenting, it is recommended not to be too violent (because the inside is hollow and very fragile).

ways to increase the signal

  • Hold the end of the antenna with your hand.
  • Pull the headphone cable upwards.

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The original earphones have poor noise reduction, so you can buy piston earphones yourself.

F. Reference materials

References:
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Origin blog.csdn.net/qq_33957603/article/details/130536713