0
dBm means "decibels relative to 1 mW". B is the symbol for the unit bel, and decibel is 1/10th of a bel. Bels are used to measure ratios between two measurements, not an absolute measurement by themselves. In this case you're measuring relative to 1 mW.
So, for instance, if a device is producing 100 mW, this will be 100 times your reference of 1 mW. "100 times" the power is equal to 20 decibels, so this would be 20 dBm.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
Define the term African American history?
Michelle and daniellle define American history:)
What is a additional term from the movie to define?
It mean pick a answer from something or a movie or a book to define
Define the term tight-framing?
; A shot in which there is little visible space around the main subjects. Source: http://cueflash.com/Decks/Film_Studies
What is the difference between Dbi and Dbm?
There are a few terms that need to be understood. [dBm,dBd,dBi and dB] For antennas, a common reference unit is the dBi, which states the gain of an antenna as referenced to an ISOTROPIC source. An Isotropic source is the perfect omnidirectional radiator, a true "Point Source", and does not exist in nature. Consider it a source which is the center of the sphere and the energy is coming equally out of it as a sphere. Now in reality nothing like that exists. It's also 2.41 dB BIGGER than the next common unit of antenna gain, the dBd, When you convert that to a real antenna. So a simple dipole antenna has a gain of 2.41dBi, and a gain of 0dBd, since we're comparing it to itself. Now lets talk about dBm, dBm is not is reference to anything else but the used as an actual gain ( say amplifiers ) , P(dBm)=10*LOG(1000*Power in milliwatts,10), an amp with an output of 30dBm puts out 1 Watt. It is not in refernce to two power level but directly correlating the gain of a device. Now when you talk about a dB it is a relative measure of two different power levels. 10log (p1/p2, 10).
What is bound report?
define bound report define bound report
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
Convert 2.2 V pp to dBm?
20 dbm
Is DBM real?
Yes, DBM (data base management) is real.
How would you define the term electromegnetism?
define the term "electromegnetism".
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 term on sound?
define the term sound
What is the loss if input is -5 dbm and output is -10 dbm?
Gain = Pout - Pin = -10dBm - (-5dBm) = -5dB
Define the term map as used in engineering drawing?
= Define the term map as used in engineering drawing?" =
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.
