PicoScope 7 Software
Available on Windows, Mac and Linux
specifying x-axis zoom start & end points
specifying x-axis zoom start & end points
Is there any way to set specific start and end times for the zoom display? When using zoom window and/or slider bar, the times at start and end of the viewport are almost impossible to control, and usually give very awkward labelling of the tick-marks. I'd like to be able to set specific limits for the zoom interval, and let the software auto-scale gridlines accordingly.
Re: specifying x-axis zoom start & end points
Hi Sensorman,
Unfortunately, you can't specify the start time of a zoom (which would give you the whole number labelling you are after) but what you can do is specify the zoom amount, which, if you use whole number ratios will give you scaling to tenths of the time units. So, if you measure roughly where the nearest whole number division of the axis is to the start of the area of interest, by moving a measurement ruler close to the start of the area of interest (in the example below the measurement ruler set at 134us is pretty close to the signal start. 133us on a 250us half scale represents a zoom of 250/(250 -134) = 2.14 for for the full scale, i.e. divide the half scale by the difference between the half scale and the measurement ruler value, and round the result up to 2 decimal places):
...you can see that the scale is now in tenths. Then you can just drag the end of the window to where you want it, to zoom in completely and the axis will keep the tenth scaling):
Regards,
Gerry
Unfortunately, you can't specify the start time of a zoom (which would give you the whole number labelling you are after) but what you can do is specify the zoom amount, which, if you use whole number ratios will give you scaling to tenths of the time units. So, if you measure roughly where the nearest whole number division of the axis is to the start of the area of interest, by moving a measurement ruler close to the start of the area of interest (in the example below the measurement ruler set at 134us is pretty close to the signal start. 133us on a 250us half scale represents a zoom of 250/(250 -134) = 2.14 for for the full scale, i.e. divide the half scale by the difference between the half scale and the measurement ruler value, and round the result up to 2 decimal places):
...you can see that the scale is now in tenths. Then you can just drag the end of the window to where you want it, to zoom in completely and the axis will keep the tenth scaling):
Regards,
Gerry
Gerry
Technical Specialist
Technical Specialist
Re: specifying x-axis zoom start & end points
Thanks Gerry,
Yes, agree that playing with fractional & integer zoom values can help. But (related to this issue) I wish the "left" and "right" buttons on the scroll bar in zoom mode shifted by a consistent amount. The "nudge" starts at 5% of displayed X span for zoom of 2, but then shifts to 8% for x5, 9% for x10, then goes awkwardly fractional and appears to asymptote towards 10% for higher zooms. If the "nudge" was always precisely 10% (say), then we could start from zero/left edge and click along to get the desired start time as a reasonably "whole" number. Just an observation...
Yes, agree that playing with fractional & integer zoom values can help. But (related to this issue) I wish the "left" and "right" buttons on the scroll bar in zoom mode shifted by a consistent amount. The "nudge" starts at 5% of displayed X span for zoom of 2, but then shifts to 8% for x5, 9% for x10, then goes awkwardly fractional and appears to asymptote towards 10% for higher zooms. If the "nudge" was always precisely 10% (say), then we could start from zero/left edge and click along to get the desired start time as a reasonably "whole" number. Just an observation...
Re: specifying x-axis zoom start & end points
Hi Sensorman,
O.K. thanks for the observation. I will feed that back.
Regards,
Gerry
O.K. thanks for the observation. I will feed that back.
Regards,
Gerry
Gerry
Technical Specialist
Technical Specialist