Hai all, I want acquire the data from impedance analyzer (capacitance, C, and dissipation factor, D)as a function of temperature over a frequency range. If anyone has code for this or using some program or having the source the program/code, please help me out. Thanking you in advance

G'day, Is the impedance analyser doing all the work? That is, is it sending data out of a port in a definable format? This format would be in the manual and you could convert it using some application like VBA or C. The important thing here is the hardware connection- what type of port is it using for output ie serial, parallel or even the IEEE instrumentation bus (488?? Sorry I forget the standard). Once you know this you can decide on the software. Here is a link to a site that provides a free driver that can be configured (for serial only I think) to the protocol that your analyser is using, this data is then imported to an excel spreadsheet and charted etc: www.windmill.co.uk Good luck, Elric

Hai, thanks for the response. I am using the IEEE 488 HPIB card for interfacing the impedance analyzer to the PC. The impedance analyzer directly reads the values of capacitance and dissipation factor. I have to read the temperature from a voltmeter connected to thermocouple. The impedance analyzer has the frequency variation provision in steps and continuous sweep. Your help is highly appreciated. Thanks in advance

G'day, Yes, I suspected as much. Now, is the voltmeter connected to the IEEE bus as well? If my memory serves we well, the IEEE bus is a parallel bus not too disimilar to the SCSI interface. If this is the case, do you have any software with the card? Something like LABVIEW? If you want to obtain data from the voltmeter you will need something that will "talk" to the card. I'm not sure how the card is interfaced to the PC bus, but I'm guessing it will be somewhere in the area about 300H which IBM reserved for I/O cards. If this is the case, you may be able to write an application in something like VB or VBA (excell) that will extract the information you want. Get back to us and let us know more details about the card and software. regards, Elric