Very Simple Ques. without answers !!
时间:04-08
整理:3721RD
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Dear all
i really have a very simple ques. but i failed to finds its ans.
1- what the standard or the default or the famous min. input RF power for the analog TV to work without antenna booster ?
2- what the standard or the default or the famous max. output audio power for PC which have a builtin sound chips in its motherboard like Gigabyte or MSI?
3- what the standard or the default or the famous max. output audio power for Nokia Mobiles which delivered to the handfree speaker?
thanks all
bye
i really have a very simple ques. but i failed to finds its ans.
1- what the standard or the default or the famous min. input RF power for the analog TV to work without antenna booster ?
2- what the standard or the default or the famous max. output audio power for PC which have a builtin sound chips in its motherboard like Gigabyte or MSI?
3- what the standard or the default or the famous max. output audio power for Nokia Mobiles which delivered to the handfree speaker?
thanks all
bye
1. The average sensitivity of an analog TV (PAL/SECAM/NTSC) is approximately -65dBm for 30dB video SNR.
2. The audio line out of a standard PC motherboard with built in sound card is approximately 1V pk/pk.
3. Audio output power for handsfree speaker of most mobile phones is approximately 100 mW.
thx alot
can i have some ref. for that (sites , books , ..etc)
bye
