Some time ago I made accuracy and stability tests of the PCGU1000.
At the moment I have no access to all the test results, but I can say in general that this generator is very stable.
I measured the amplitude stability at 1.000V.
At the frequency range 50Hz to 20kHz the amplitude variation was less than 0.7mV rms. Below there is a snippet of the test results.
If you like, I can send later more detailed test results.
In sine and in triangle wave mode you can enter the amplitude nearly with “infinite” resolution. Adjusting the amplitude in steps of 0.1mV is no problem.
Here some results of the PCGU1000 voltage accuracy:
PCGU1000 was set to output 1.00V at 1kHz.
Then the frequency was varied from 20Hz to 100kHz and the amplitude was measured.
Test instrument was Fluke 8842A Multimeter
That error message indicates that the software can’t find the generator.
I think there may be driver problem or the COM port numbet is >9.
Please go to the Device Manager (Control Panel | System | Hardware | Device Manager). Scroll down to Ports and click the plus sign.
There should be seen text: “PCGU1000 COM Port (COMx)” The x is the port number and must be in between 1 … 9.
What is the port number you see?
Scroll down to the Universal Serial Bus section and click the plus sign.
There should be seen text: “PCGU1000 Function Generator”.
If both OK then the drivers are properly installed.
The software uses registry search to find out the COM port number of the generator.
I think the registry access is not allowed in normal user mode without administrator privileges. The software tries to connect wrong COM port number.
You may do one test if it possible in normal user mode:
Change the port number to 4 (it is the default port number for the PCGU1000).
Here is how to change the port number:
In Device Manager, double click on PCGU1000 Com Port.
On Port Settings tab click Advanced.
Change COM Port Number to COM4 if unused.
Click OK and OK to exit.
Close Device Manager. (Next time in the Device Manager new port number is displayed.)