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What is the dbm?

Updated: 8/10/2023
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13y ago

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it is the power ratio in decibels

No, it isn't. dB on its own is a ratio.

But when dB has a suffix, the figure is an absolute measurement, not a ratio.

For instance, dBm is a measurement of power compared to 1mW.

0dBm means zero difference between 1mW and the measured figure. In other words the measured figure is also 1mW.

3dBm is 3dB greater than 1mW. -3dB is 3dB less than 1mW. etc.

Another suffix is W. 0dBW being 1 watt.

There are many more suffixes, some of which are used in only a few specialised cases.

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12y ago
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15y ago

DataBase Management System (DBMS) is a software packagethat allows data to be effectively stored, retrieved and manipulated and the data stored in a DBMS packege can be accessed by multiple users and by multiple application programs like (SQL Server, Oracle, Ms-Access) .

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13y ago

dBm is decibel power unit referenced to 1 milliwatt.

Look at the related links for conversion: voltage to dBm, dBu, and dBV.

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Convert 2.2 V pp to dBm?

20 dbm


Is DBM real?

Yes, DBM (data base management) is real.


What is the dBm value of a 10milliwatt signal?

P(dBm) = 10log10(10mW) = 10dBm


What is 75 dBm converted into dBW?

dBw=dBm-30 then 75-30=45 dBw dBw=dBm-30 then 75-30=45 dBw dBw=dBm-30 then 75-30=45 dBw


Where can one learn about DBM outplacement?

DBM outplacement information can be located directly on the DBM website. You can also locate this type of information on career transition websites as well.


What is mic and line level audio?

Mic level is -56 to -40 dbm. Line level is either -10 dbm or 4 dbm. You need a preamp to amplify a microphone to line level.


What is the loss if input is -5 dbm and output is -10 dbm?

Gain = Pout - Pin = -10dBm - (-5dBm) = -5dB


Milliwatts to dbm conversion?

The 'm' in dBm means the power is referenced to 1mW. So, the power in dBm equals 10 times the log of the power in mW, or P(dBm) = 10*log(P(mW)/1mW). For example, 1W = 1000mW, so 10*log(1000/1) = 30dBm.


How do you convert dBm to dB?

the first convert the power in dBm to MW, the define of dBm=10 log (P MW) -10 log ( 1mw). example: let P=-2 dBm convert this to dB? answer: Pmw= inv log(-2/10)=0.630mw*1000 micw/mw=630 microw 10log(630)=28dB


How do you convert the 1db to dbm?

dBm is defined as power ratio in decibel (dB) referenced to one milliwatt (mW). It is an abbreviation for dB with respect to 1 mW and the "m" in dBm stands for milliwatt. dBm is different from dB. dBm represents absolute power, whereas in audio engineering the decibel is usually a voltage ratio of two values and is used then to represent gain or attenuation of an audio amplifier, or an audio damping pad.


How do you convert dBm to watts?

dBm is defined as power ratio in decibel (dB) referenced to one milliwatt (mW). It is an abbreviation for dB with respect to 1 mW and the "m" in dBm stands for milliwatt. dBm is different from dB. dBm represents absolute power, whereas in audio engineering the decibel is usually a voltage ratio of two values and is used then to represent gain or attenuation of an audio amplifier, or an audio damping pad.


How do you convert 10W to dBm?

dBm us almost exactly the same as dB. The only difference is that there is a reference of 1 Watt = 0 dB, and 1 mW = 0 dBm. dBm is defined as power ratio in decibel (dB) referenced to one milliwatt (mW). It is an abbreviation for dB with respect to 1 mW and the "m" in dBm stands for milliwatt. dBm is different from dB. dBm represents absolute power, whereas in audio engineering the decibel is usually a voltage ratio of two values and is used then to represent gain or attenuation of an audio amplifier, or an audio damping pad. PdBm = 10*log10(1000*10W) = 40dBm