visa binary data

[baffled]

I am using viRead in vb to rad IEEE754 binary formatted data from a Keithley 2400 sourcemeter. The data is first read into a string buffer and looks like "#0vq?ßÖ#<aMB @PD". The first 2 bytes are the message header. The following are 5 32-bit floting point numbers. Can anybody tell me how I can turn this into meaningful numeric values?

[Ben]

Hi Baffled,

There is something wrong with what you have posted here!

The string you show only has 17 bytes.

17 bytes - 2(bytes of header) = 15

15/4=3.75

Double check the # of bytes in the header and verify that there should be 5 values. I am guessing the mantissa may be padded with zeros.

Here is a LV example that shows how to work with the parts of of IEEE 754 representation.

http://sine.ni.com/apps/we/niepd_web_display.DISPLAY_EPD4?p_guid=B123AE0CBCC2111EE034080020E74861&p_node=DZ53046&p_submitted=N&p_rank=&p_answer=&p_source=External

There is one more thing I should mention. IF YOU ARE USING LV, there are data manipulation operators located under the "Advanced" pallette that can swap bytes, words, etc.

If you have follow-up Q's and you
are workin gin LV, then post to the LV general forum for more help.

If not using LV, please ignore this distration,

Ben