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I need to data log and reproduce the waveform, not the rms value. Also while the freq of the signal i am logging say be 1khz, transients may occur at high freq and i want to capture those transients.
Say i have a (current) sensor with 50kHz bandwidth, i think that means that the maximum freq of the input that can pass to the output is 50kHz? Am i right?
Secondly, lets say i want to drive the output of the sensor to an ADC. How does the sampling rate (ksps) be connected with the bandwidth of...
I read the datasheet but i didn't find such an info in it, so that's why am asking here..
If i split the 16-bit adc output to the two channels and bridge the control pins (RXF,TXE etc) and the read the two bytes and calculate the value on the software..
Just a thought..
Is it possible to use the two channels of an FT232H or FT4232H as one 16-bit wide data bus?
I am going to use an ADC with a 16-bit wide parallel output and i am wondering if i can use the above chips directly to the ADC without microcontroller
I compensate the cable resistance in software calculations. Also can you suggest me a precise voltage divider to use with the 5V reference voltage for the 2.5V centered waveform?
This to make the hole system ratiometric. A resistor voltage divider can be so precise?
I want a maximum sampling rate of 5 ksps for voltage and 5 ksps for current. On the PT100 there is no sense of that high speed cause the PT100 itself is has a much slower response.
Thanks, for the answer.
I thought it was the low input impedance of AD817 (300kΩ), so i tested an AD621 with better results for the PT100 measurement. But why on the other two circuits the AD817 gives accurate results and not on the PT100? Cause the transducers have a precision current output...
Hi guys,
i have 3 circuits for measurement Voltage, Current and Temperature. I am using the YHDC HV25 for voltage, YHDC HAX25 for current and a PT100 for temperature measurement. I am on the prototyping phase and from the Proteus simulation i see good result on the voltage and current...
I changed the parallel bus from portd to portb and now does the same problem, but keeps the first hex and confuses the second.. waht can it be..?? please help. using PIC18f4553
It seems that FT232h confuses the four data bits on each byte i send. Eg. whatever i send in hex format, keeps the D3:D0 and confuses the D7:D4.
Sent: 1 (0x01) : PC get: 225 (0xE1)
Sent: 50 (0x32) : PC get: 242(0xF2)
Sent: 173(0xAD) : PC get: 237(0xED)
and so on.. whatever i send it keeps the...
What do you mean about the references? I use the MCP1525's 2.5V as reference for the signal. Do you mean that the reference here must be the same as the ADC reference?
I tested the circuit on post #7 and worked quite well. I also have in mind something like the circuit attached below. Is is better than the deferential amp for this purpose?
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