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Hi,
I have doubts on how the routing metrics (eg: load, bandwidth) in Interior Gateway Protocol (IGP) is determined. Is there any formula to do so?
Regards,
cwt
fsk modulator demodulator using pic
Hi all,
I manage to solve this. It is not because of my circuit problem. Its due to the oscilloscope setting.
It should set to dc coupling instead of the ac coupling. What a problem. LOL
Regards,
cwt
fsk modulation-demodulation
The demodulator input has a 0.1uF capacitor.
I need some verification on the FSK demodulator.
Is it the xr2211 demodulator should give an 0V to 5V output if the input to the xr2206 modulator is a split voltage signal (+V and -V)? (See figure, yellow = input, blue =...
mc1496
Is it all types of modulator and demodulator requires power amplifier to assist the wireless transmission?
I thought they only need a suitable antenna to transmit. :(
So now if i use any power opamp other than those suggested by you, is it wireless transmission is able to achieve...
xr2211 demodulator
Hi,
I manage to solve the problems. However, there is another problem arises. Is there anyone who built and tested the xr2206 with xr2211? I would like to hear opinions from you.
When i use the 600Hz output of function generator (+2.5V and -2.5V) to drive the xr2206, the...
mc1496 balanced modulator
I wish to do wireless communication between the modulator and demodulator. So thats why i need an antenna. But for my case if i use antenna, it'll huge. I cant imagine that. So is there any option where i can transmit wirelessly? My carrier is in the range of 100kHz to...
Hi Junaid,
Does your output from the xr2211 have a 50% duty cycle?
My xr2211 output is not quite stable as the duty cycle might varies. Sometime has greater duty cycle, sometime has smaller duty cycle. But on average it is around the region of 39% duty cycle.
Can you advise me?
Regards,
cwt
balanced modulator
Hi there,
Currently, i have build the modulator and demodulator as shown in Fig.5 and Fig. 29.
The frequency for modulating signal input = 1kHz
Carrier frequency = 100kHz. (for both modulator and demodulator)
The modulator output (either V+ or V-) is able to get the...
fsk modulator & demodulator
Hi,
1. When I feed in the FSK output from the modulator to the demodulator input (through a wire), the TTL output voltage is both HIGH at lower frequency (2kHz) and higher frequency (5kHz). But when i use the function generator to feed into the demodulator with the...
fsk modulator demodulator
Hi,
I had xr2206 as fsk modulator and xr2211 as fsk demodulator. My logic 0 = 2kHz and logic 1 = 5kHz. I had already put all the components base on my design.
But there are some doubts.
1. How should the modulator and demodulator being tested properly? Is it...
fsk modulator demodulator
Hi,
I had xr2206 as fsk modulator and xr2211 as fsk demodulator. My logic 0 = 2kHz and logic 1 = 5kHz. I had already put all the components base on my design.
But there are some doubts.
1. How should the modulator and demodulator being tested properly? Is it...
transistor bc162
Hi,
Currently, i am searching this bc162 transistor. However, it cant be obtained at my place so is there any replacement/substitution for this transistor? I would like the replacement to be in a case style rather than SOT form.
This is the link for the transistor...
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