K8047 four channel data logger/recorder not wotking

Kits PC Related Projects
1

I have purchased a 4-CHANNEL RECORDER / LOGGE k8047 k8047 is not working.I purchased the item for measuring DC Voltage .When I connect the voltage to be measured(0-5V DC) in the input of the 4-CHANNEL RECORDER / LOGGER k8047 the voltage is dropping heavily which shows the sign of defective and faulty electronics.I bought the item with a great hope for my project work but i am now disappointed.Kindly advise me what I should do next either to sort out the problem or to get a working item. A favor of an immediate reply would be highly appreciated.

With regards
Paldurai Kasi Rajan

2

As all the inputs have a very high input impedance, it is impossible that they would cause a large voltage drop unless your signal to measure also has a very high output impedance.
If however the output impedance of your signal to measure is lower then, let’s say, 100 KOhms, and you still have a large voltage drop, you probably made an error while building the kit.
I hope you also know that the ground of the kit is also the ground of the signal to measure and of the computer the kit is connected to?

3

Dear sir,

Thanks for your useful information, I have now sorted out my problem.

4

Glad to hear that.
You’re welcome.