how pxi-5660 get all the bits that pxi-5671 transmit??

[xingbofeng]

hello 

I am trying to transmit a bit stream before  modulating. But I am not getting the original bit stream after  demodulating. i use the MT RFSG PSK.VI and MT RFSA PSK.VI,i try set sync  parameters and filter parameters same as the transmiter.i use 5671 and 5660 .Any advice or guidance would be greatly appreaciated.

[Jen-Liang.Wang]

Hi, would you please describe your question more specific and attach your VI? There are many possible problems for incorrect demodulation, for ex. bit loss.

Before any demodulation process, do you get correct constellation? Thanks.

NITW 

Aaron

由 Jen-Liang.Wang 在 11-11-2009 02:46 AM

上編輯的訊息

[xingbofeng]

it's the VI ,transmitting and receiving are made in a one VI. it could get 6 bits stream exactly,but if i transmit 7 bit stream or more .it can't receive the original bit stream. i want to transmit a user defined stream with any bit ,how can i do this .

[Jen-Liang.Wang]

I would like to ask all parameters for configurations. It seems that you can get the correct constellation; therefore you can get correct bit stream when the number of bits is 6.

What do you mean by "it can't receive the original bit stream"? What about the bit stream you get?

I would also like to know if your record is continuous record by record or not? Maybe the reset for demodulator once at beginning is enough.

NITW 

Aaron

[xingbofeng]

hill

i mean that it could only get the number of bits is 6,if i transmit a bit stream when the number of bits is 7 ,it can't receive the original bit stream.

may i have your telephone number ? my telephone number :18998121151.  Mr xing

[Billingsley]

Hello.

This forum is for taiwan area only.

It seems this phone # is from China.

Plz call NI China for technical support.

Thanks