Search found 4 matches

by luto65
Sat Nov 16, 2019 11:25 am
Forum: DSO138
Topic: DSO138 measuring of 134,2kHz signal emitted from RFID sender
Replies: 1
Views: 4782

Re: DSO138 measuring of 134,2kHz signal emitted from RFID se

Self answer: WRONG !
The antenna output is extremely weak.
by luto65
Fri Nov 15, 2019 2:18 pm
Forum: DSO138
Topic: DSO138 showing 50 Hz signal even witout connections
Replies: 0
Views: 4989

DSO138 showing 50 Hz signal even witout connections

Dear All,
my DSO138 is powered by a 9V transformer that stabilise 50Hz the 220 AC current and delivers 9V DC.
When I connect the provided probe to the DSO138, then I can observe a clear 50Hz signal in the display even without attaching the probe to anything.
Is this "normal" ?
by luto65
Fri Nov 15, 2019 11:22 am
Forum: DSO138
Topic: DSO138 measuring of 134,2kHz signal emitted from RFID sender
Replies: 1
Views: 4782

DSO138 measuring of 134,2kHz signal emitted from RFID sender

Dear all,
I would like to check with the DSO138 what signal is emitted and is received from the 134,2 kHz RFID sender of my pet-door.
I was thinking to connect the DSO138 probe to the pet-door antenna poles, and then collect the signal with/without the RFID card.
Any opinion ?
by luto65
Fri Nov 15, 2019 11:13 am
Forum: DSO138
Topic: DSO138 usage of UART RX TX to stream to USB
Replies: 0
Views: 5413

DSO138 usage of UART RX TX to stream to USB

Dear All,
I would like to be able to collect the data that the DSO138 is showing on its screen.
This is something that is possible with the DSO138mini, connecting to the UART RXTX. I was wondering if anybody has already tried out the same approach also on the DSO138.