I have connected Dr Daq via the USB /parallel port converter. All values appear to be correct except the voltage which continually reads 4996 mV. If I ground the connectors it still reads 4996mV. Any ideas ?

Our DrDaq works perfectly using an old PC with Win98. We now wish to connect it to a Compaq AP250 running XP. We have installed the latest picolog software, modified the BIOS to be "output only" for the parallel port, but the s/w cannot find DrDaq. What else can we try. We have also tried using an I...