DI-1100, simple test with 5V bench power supply at channel 1, multimeter says 5V, but WinDAQ displays 4.33 V ??? Why ???

DI-1100, simple test with 5V bench power supply at channel 1, multimeter says 5V, but WinDAQ displays 4.33 V ??? Why ???

Hello,

Before i reach out to tech support, thought i would try the forum first for help.

Received the DI-1100 unit today (bought from Amazon).

Put it to a very simple test, with a 5V DC bench power supply to channel 1.

Verified with multimeter, it's reading ~5V DC.

Started WinDAQ (latest verion, drivers), and it's reading 4.3396 volt.

Why?

Thanks.