Hi,

We are using DT800 for 2 months. While trying to get RPM data from laser tachometer of PCB (which generates 1Vpp difference on voltage), I think we have damaged the Digital channel 1.

We have supplied the power 24VDC-20mA to tachometer using external power supply and connected the + and - cables of tachometer to D1(+) and Gd(-). We have applied same connection several times using analog channels and everything was ok.

When we define 1DS, the channel state is always 0 and never changes even we connect D1 to Gd with a cable. Is there any way to make D1 to work or should we send it to repair?

Thank you very much.
S.Senturk

Good morning S.Senturk,

Your digital input has been damaged. Please return the unit to for repair.

Cheers,
Roger

Thanks Roger,

Does the failure of this channel affect the datalogger functioning? If it will have no affect, then we will use the logger for a while with other digital channels and send to repair later.

Thanks again.
S.Senturk

Good morning S.Senturk,

Can't tell unless we get the dataTaker back and test it. It depends on how far into the logger the over Voltage went and what was damaged on the way through.

Cheers,
Roger