Bug 1097 - Unable to use large time bases on Rigol DS1054Z
Summary: Unable to use large time bases on Rigol DS1054Z
Alias: None
Product: libsigrok
Classification: Unclassified
Component: Driver: rigol-ds (show other bugs)
Version: unreleased development snapshot
Hardware: All All
: Normal normal
Target Milestone: ---
Assignee: Nobody
: 1108 (view as bug list)
Depends on:
Reported: 2017-12-28 13:26 CET by Jan Mrázek
Modified: 2018-01-03 12:15 CET (History)
2 users (show)


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Description Jan Mrázek 2017-12-28 13:26:53 CET
It is not possible to use time bases larger than 50 ms. Affects both USB & LAN connection. In PulseView when you select time base larger than 50 ms and press the run button, nothing happens and after 10-15 it is possible to press the stop button. There is probably a bug in the communication protocol as the scope sends a wrong answer to the trigger command.

I attach a log level 5 from pulseview, where I first capture data using 5 ms base and then 100 ms base.
Comment 1 John Sanderson 2018-01-01 21:43:31 CET
I have something similar happening:

Setup is Windows7 machine, DS1102d, Pulseview.
I am reading an I2C signal in a well-proven target system as a test for
Pulseview and to be used later in real troubleshooting elsewhere once I get it all
to perform as hoped.

If I set the timebase to greater than 50uS I cannot reliably read and decode
the SCL / SDA stream. This also sets the maximum capture period to 600uS and I 
don't see a way to increase this. The result is I can only read and decode a couple of bytes and not a whole data handshake.

Maybe I'm overlooking something simple. Any ideas anyone?

rgds, John
Comment 2 Soeren Apel 2018-01-02 19:12:57 CET
*** Bug 1108 has been marked as a duplicate of this bug. ***
Comment 3 Jan Mrázek 2018-01-03 12:15:43 CET
Here is the log: https://files.honzamrazek.cz/5ms_100ms.txt (cannot be uploaded here as it has more than 1 MB)