about write command into register

[cantata2014]

the comand format is as follows:

this is the string I configured:

but the register for FineTuneFrequency(FTF) is signed 16-bit:

how should I write the register?? thanks!

[Dennis_Knutson]

Duplicate: http://forums.ni.com/t5/LabVIEW/about-VISA-write-value/m-p/2979997

[cantata2014]

duplicate what?

[Dennis_Knutson]

Duplicate post. You already asked the same time and got some answers.

[mikeporter]

Right off hand I would say the code you are showing should work fine. The difference between signed and unsigned is not importance -- they are both 16 bits so the command packet should build the same. Just make sure the bytes get inserted in the right order.

Mike...

[cantata2014]

it says the register for FTF is 16-bit, but I use 8-bit. I don't know if my configuration is right.......

[Dennis_Knutson]

Please stick to your original thread. It does no one any good to have your question and answers scattered all over the place. It is also considered rude.

[mikeporter]

The thing is, an 8bit value will fit into a 16-bit space. Just make sure that the most significant 8 bits are all set to 0.

Mike...