Hi,
In the manual there is an adjustment procedure. Have you looked at that?
DC offsets in trigger points do shift the start and stop triggers.
Cheers,
Magnus
On 07/02/2017 12:16 AM, Thomas Allgeier wrote:
Yes, they are both set to "positive". Leaving the start at "pos" and
switching the stop to "neg" gives 66 ns. One more observation, which
probably does make sense: If I set the ARming to +/-TI and toggle the
Period Complement the "sum" is always very close to 100ns: 15 is
complemented by -85 and 66 by -34. All this is for Trigger Levels at Preset.
When I "tune" the levels to get 100 ns at +TI and then switch to +/-TI I
get around 20 ps, and the Complement button has no effect on this.
On Sat, Jul 1, 2017 at 9:38 PM, Poul-Henning Kamp <p...@phk.freebsd.dk>
wrote:
--------
In message <CAOT1cQJ4K8uyNvFp8AjoLGjd57Pm31LnZT_jRo44J4Zhesvgzg@mail.
gmail.com>, Thomas Allgeier writes:
Going through the motions of measuring TI with it's own 10MHz ref as input
(as described in the manual) I don't get 100 ns, but around 15 ns. So this
is with the switch set to START COM. Oddly enough I get the same 15 ns
with
the switch set to SEP, and going through a 6 ft cable between start and
stop.
Have you checked the trigger polarities ?
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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