CBT DPSK MOD

[shaik]

hi

i am tring to set the CBT to DPSK modulation using the vis for init dpsk and read dpsk etc

i get an error while getting to the read function:

 timeout  before operation compleate and then the CBT stuck

i have also noticed that althogh the command appears on the cbt screen the instrument doesnt config to DPSK mod at all

any ideas???

[Dennis_Knutson]

You haven't given people much to work with. What is a CBT? Does it have a manufacturer's name and model number? What is the name of the driver you downloaded?

[shaik]

CBT is a bluetooth tester by R&S I have on it ver 4.2b

the instrument drivers were downloded from R&S website and they include the druvers for the base and for the BT option

both are for labeview 7.1 which I am using to write the progrem on.

the problem accore as I mentioned tring to st the CBT to DPSK modulation

I will be happy to give any more needed information.

thanks

shai

[Jason W]

Hey shaik,

I have a couple of questions.  What error are you getting when you run your program?  Is there an error code associated with it?  Also, what bus are you using (GPIB, Serial, etc.)?  It would also help if you could post a screenshot of the error so we can help you solve this problem.

Thanks,
Jason W
Application Engineer
National Instruments

[shaik]

I am using GPIB connection

the error is: timeout before operation compleated.

I think that i get over it by decreaseing the numbet of burst i am sending

although what i am not confidenet is:

while setting a DPSK modulation i can see the command  on the remote screen but moving back to local

the modulation is still set to GFSK even though the result i get are for DPSK mode.

[Jason W]

Hey shaik,

It sounds like you need to change the REN to either local or remote enable.  REN indicates whether or not the board is in the remote state.  REM is set whenever the Remote Enable (REN) GPIB line is asserted and the GPIB board detects that it's listen address has been sent either by the GPIB board or by another Controller.  REN is cleared whenever REN becomes unasserted, or when the GPIB board as a Listener detects the Go to Local (GTL) command has been sent either by the GPIB board or by another controller.  Check the manual for the instrument for the commands to change the REN state.  Some instruments do not have a specific command to go into local (or remote) mode.  If you want to do this in Labview using the GPIB or VISA vi's the following link explains how to do this.

http://digital.ni.com/public.nsf/websearch/1C8802FDAF0EEABE86256B6000095724?OpenDocument

Hope this helps,
Jason W
Application Engineer
National Instruments

[Jiri_Kominek]

To measure DPSK values CBT has to be in TEST signalling mode prior to taking measurement. To set signalling mode use VI RSCMUBT_Sig_ProcSignAct.

Hope it helps...

[shaik]

thanks

[shaik]

hi

according to the result i am reading back from the instrument  the

equipment does config to DPSK it is just no shown when i returen back to local mode when the measurement is done

thanks

shai