https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5 en-us 2022-10-17 16:00:22 UTC 2022-10-18 19:27:23 UTC hello@padlet.com jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345501121 Network communications in a computer are split into 7 layers of the OSI model, or the Open Systems Interconnection model, amongst them all lies the first layer, the physical layer, where data is transmitted over a medium in the form of bits, also providing mechanical and electrical specifications]]> 2022-10-18 16:42:09 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345501121 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345501795 2022-10-18 16:42:29 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345501795 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345504215 ada dua klasifikasi, simple yaitu gelombang sinusoidal yang tidak dapet dibuat lebih sederhana atau gabungan yaitu sinyal yang terbentuk dari beberapa sinyal ]]> 2022-10-18 16:43:39 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345504215 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345504685 it is the ones and zeros used for encoding, a composite analog signal with an infinite bandwidth, it can have more two levels and more than 1 bit per level ]]> 2022-10-18 16:43:54 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345504685 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345505175 the signals that are transferred through transmission media are not perfect, the signal at the beginning of the medium is different from what is at the end of the medium, these transmission impairments are caused by attenuation, distortion and noise ]]> 2022-10-18 16:44:13 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345505175 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345506732 2022-10-18 16:44:57 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345506732 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345508326 Continuous data]]> 2022-10-18 16:45:55 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345508326 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345509335 Discrete data ]]> 2022-10-18 16:46:25 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345509335 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345511321 Signal yang memberikan informasi tanpa putus-putus, bentuknya gelombang yang merepresentasikan gelombang electromagnetic yang kontinu, dapat memiliki jumlah yang tak terbatas dalam suatu jangkauan ]]> 2022-10-18 16:47:25 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345511321 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345514847 Signal yang merupakan bentuk sampling dari sinyal analog, berikan informasi yang berubah seketika, bentuknya diskrit yang mewakili urutan pulsa tegangan dalam 0s dan 1s, dapat memiliki hanya sejumlah nilai dalam suatu jangkauan ]]> 2022-10-18 16:48:51 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345514847 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345525243 2022-10-18 16:54:13 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345525243 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345526153 ada siklus atau pengulangan periode dalam seland waktu tertentu ]]> 2022-10-18 16:54:43 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345526153 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345527229 2022-10-18 16:55:16 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345527229 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345631977 sine wave merupakan bentuk dasar, dan terdiri atas 3 parameter yaitu amplitude, frekuensi dan fasa.

]]> 2022-10-18 17:51:24 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345631977 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345636688 Nilai absolut dari intensitas sinyal proporsional terhadap kekuatan energi dari sinyal tersebut, dan ini diukur dalam satuan volt ]]> 2022-10-18 17:54:09 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345636688 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345645851 2022-10-18 17:59:24 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345645851 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345647788 banyaknya waktu dalam detik dalam satu siklus, satuannya adalah s, dan periode berbanding lurus dengan frequensi

]]> 2022-10-18 18:00:33 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345647788 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345678641 Banyaknya periode yang berulang dalam 1 detik, satuannya adalah hertz. Frekuensi berbanding lurus dengan periode.]]> 2022-10-18 18:18:14 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345678641 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345680307 Posisi awal gelombang relative terhadap waktu yang dilihat dari 0, fase diukur dalam derajat atau radian.]]> 2022-10-18 18:19:15 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345680307 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345681990 Jarak antara satuan berulang dari sebuah pola gelombang, tergantung pada frekuensi dan mediumnya, lambangnya lambda ]]> 2022-10-18 18:20:17 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345681990 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345684383 2022-10-18 18:21:39 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345684383 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345687112 Perubahan sinyal amplitude terhadap waktu ]]> 2022-10-18 18:23:11 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345687112 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345689139 hubungan antara amplitude dan frekuensi ]]> 2022-10-18 18:24:23 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345689139 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345690749 Kombinasi antara beberapa gelombang sinusoidal dengan amplitude, fase, dan frequensi yang berbeda ]]> 2022-10-18 18:25:20 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345690749 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345692781 Rentang frequensi yang terkandung dalam sinyal komposit ]]> 2022-10-18 18:26:34 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345692781 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345696481 Calculate the number of bits for each level uses the formula log₂(number of level/(s) ]]> 2022-10-18 18:28:52 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345696481 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345699802 Jumlah bit yang terkirim dalam 1 detik yang dinyatakan dengan satuan bps ]]> 2022-10-18 18:30:47 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345699802 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345699997 Number of bit digits needed to represent an integer in binary form ]]> 2022-10-18 18:30:55 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345699997 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345703337 Digital signal is a composite analog signal with infinite bandwidth ]]> 2022-10-18 18:32:50 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345703337 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345704961 2022-10-18 18:33:53 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345704961 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345707168 - a low pass channel that doesn’t require the digital signal to be converted to analog before transmitting, the required bandwidth is proportional to the bit rate, or in other words, the more the bandwidth the faster it sends 

- To preserve the shape of the digital signal a low pass channel with a very wide bandwidth is needed 


]]> 2022-10-18 18:35:19 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345707168 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345721905 in LAN-the entire bandwidth is used for one single channel ]]> 2022-10-18 18:44:52 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345721905 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345723151 - Change the digital signal to analog before transmissions, allows us to use bandpass channels 

- more available than low pass]]> 2022-10-18 18:45:39 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345723151 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345724462 where the bandwidths don’t start from 0 ]]> 2022-10-18 18:46:28 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345724462 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345726200

]]> 2022-10-18 18:47:37 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345726200 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345732505 In time domain, voltage or current is usually expressed as a function of time, but since this is periodic, the signal here has a regular interval and pattern ]]> 2022-10-18 18:51:46 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345732505 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345733660 Signals can also be represented by a magnitude and phase as a function of frequency, but since this is periodic, the signal here has a regular interval and pattern ]]> 2022-10-18 18:52:26 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345733660 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345734852 usually voltage of current is expressed as a function of time and since it is nonperiodic, it has a regular interval and pattern ]]> 2022-10-18 18:53:12 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345734852 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345736110 Signals can also be represented by a magnitude and phase as a function of frequency, but since this is periodic, it has a regular interval and pattern ]]> 2022-10-18 18:54:04 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345736110 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345745819 attenuation or in other words, loss of power, is caused by the loss of energy when waves travel through mediums which has resistance, causing a weaker signal to be transmitted ]]> 2022-10-18 19:00:25 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345745819 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345746331 amplifiers, it compensates the loss of energy by amplifying (in other words, the gain of power) the wave, making it similar to its original form)- measurement (dB = 10log₁₀(output signal/input signal))

]]> 2022-10-18 19:00:47 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345746331 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345748990 - Composite signal changes form or shape

- Each frequency component with different propagation speeds arrive with different delays at the receiver, which results in different phases received in comparison to the phases each of them had at the source. ]]> 2022-10-18 19:02:37 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345748990 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345749884 there are 4 types of noise ]]> 2022-10-18 19:03:12 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345749884 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345750395 extra signals generated from random electron noises in the wire ]]> 2022-10-18 19:03:33 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345750395 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345750625 noise from motors and appliances like antennas ]]> 2022-10-18 19:03:42 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345750625 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345750833 the sound of motors and appliances between two wires ]]> 2022-10-18 19:03:50 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345750833 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345751049 spikes induced from power lines like lightnings ]]> 2022-10-18 19:03:58 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345751049 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345756705 - used to measure the quality of the system and indicates the strength of signal in comparison to the noise power in the system, the higher the ratio the better the quality (referred to as SNR_dB)

– values of SNR and SNR_dB for noiseless channels are infinite]]> 2022-10-18 19:07:51 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345756705 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345760355 - theoretical maximum bit rate for a noiseless channel

- formula: 2*BW*log₂ L]]> 2022-10-18 19:10:29 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345760355 jenniferluvindi https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345764036 - theoretical maximum that can be achieved

- formula: C = B log₂ (1+SNR)]]> 2022-10-18 19:13:17 UTC https://padlet.com/jenniferluvindi/7fztj6mrijwucpz5/wish/2345764036