| Electronics > Beginners |
| HELP!! Why is my new sig gen reading double on the occiliscope |
| (1/2) > >> |
| cpposteve:
hi all. as the tittle suggest. why is my new UNI-T UTG1005A sig gen reading double?? the frequency is correct byt say when i set it to 1v pp it shows it as 2vpp on my scope. been through the manual and cant find it anywhere. any help would be apreciated. thanks steve |
| IconicPCB:
The instrument has a specified output voltage into specified load ( some are 50 ohm, others 75 and yet others 600ohm source/load impedance instruments). If Your signal generator is specified as having 50 ohm source impedance then You need to terminate it with a 50 load in order o see the specified signal level. The oscilloscope input impedance at lower frequencies is much higher than any of the above options hence the output voltage will be higher than specified. |
| cpposteve:
Brill. Thanks for the answer. So how do I go about putting a signal out to a circuit? Do I have to make sure it has the 50ohm resistor/load across it no matter what I’m doing? Thanks. |
| cpposteve:
yes you are a genius. i turned it all the way up to "HighZ" and it fixed my issue, thank you very much. :-+ :-+ :-+ :-+ :-+ :-+ :-+ :-+ |
| netdudeuk:
https://youtu.be/tClE8s6RZdg |
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