PCSGU250: Not all values for timebase programming available

Instruments PC Oscilloscopes and Recorders
1

Hi!

Today I started to get access to the PCSGU250 via Excel VBA. The plattform ist Excel 2003/WinXP.

Based on the information which can be found in “PCSGU250.pdf” 17 values for timebase programming are available starting from index 0 (500ms/div) to 16 (2µs/div). The PC-Lab 2000 LT (Version 1.03 running at Firmware 1.01) offers 4 additional values (1µs/dev, 0.5µs/div, 0.2µs/div and 0.1µs/div).

Those values can not be programmed by using function Time() from “PCSGU250.dll”
If one of those values has been choosen by the GUI a call of GetSettings() gives always a value of 16 for the timebase back.

Question: How can I access those timebase values?

Ulf

2

Here is the reason why the values 1µs/div - 0.1µs/div are not included to the Time() function of the DLL:
The sample rate is 25MHz on all the Time/Div ranges from 5us/div down to 0.1µs/div.
So no improvement of the time resolution of the captured raw data is achieved by using any value between 2µs/div and 0.1µs/div.

Here you can download the latest software and drivers for the PCSGU250: velleman.eu/support/download … u250&type=