MSO channels toggle

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Eknolspk
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Posts: 1
Joined: Sat Oct 01, 2016 12:12 am

MSO channels toggle

Post by Eknolspk » Sun Dec 16, 2018 8:22 pm

Hi.
I just received my 2205 MSO scope, but I have some problems that some NOT connected MSO channels are toggling high.
For example, I've connected a 3.3 V, 10 kHz clock pulse on D0 and ground. I measure the same clock pulse with analog CHA. This is as expected.
But I also see some very short "HIGH detections" on D1 and D5 at rising edge of D0. This pins are NOT connected. Only D0 and ground are connected in MSO connector.
When I connect analog CHB to D1 it show 0.7 V, and is increased about 50 mV synced with clock pulse measured on D0/CHA. Level settings on all DI is set to 1 V.
Am I missing something here, or is my scope broken?

Thankful for reply.
Anders

Gerry
PICO STAFF
PICO STAFF
Posts: 441
Joined: Mon Aug 11, 2014 11:14 am

Re: MSO channels toggle

Post by Gerry » Tue Dec 18, 2018 10:54 am

Hi Anders,

Could you send your enquiry in to us at support@picotech.com, where we will be able to help you directly with this.

Regards,

Gerry
Gerry
Technical Specialist

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