Ron Fredericks Cto

In the eScope screen capture image attached (Top MSO64B_Max_Min_Reliability.jpg): the Maximum and Minimum badge values report 268.1 mV and -272.0 mV respectively.
But just from eyeball measurement the Maximum and Minimum values should be around 2.7 V and -2.7 V respectively.

After turning off the scope, and restarting. The readings seem correct as seen in this image: Bottom MSO64B_Max_Min_Reliability.
I see there is a new firmware verison, so I will upgrade. But perhaps you folks could like into what makes these readings unreliable.

Is my scope flaky or is this a bug in scope firmware?

Scope credentials

Manufacturer Description	Tektronix Oscilloscope MSO64B C031954
Firmware Version	2.8.1.1496

Error 1:&#160;<br> I just noticed that a very basic command is missing from&#160;4-5-6-series-mso-programmer-manual ID:&#160; <p><i>077-1305-23</i></p> <br> MEASUrement:MEAS&lt;nr&gt;:VALUE?<br> <br> While these commands are documented:&#160;<br> <br> MEASUrement:MEAS&lt;nr&gt;:YUNIT?;TYPE?<br> <br> Please review programmer manual and make sure all&#160;MEASUrement:MEAS&lt;nr&gt; options are documented.<br> <br> Error 2:<br> <br> page 3-8 Table 3-3: instrument operations that can generate OPC<br> <br> This command&#160; <p><i>MEASUrement:MEAS&lt;x&gt; :RESUlts<br> <br> Has a space between &gt; and : when there should be no space.</i><br> The result is that I copy this command to search for more details in the programmer manual but&#160;it is not found anywhere. But remove the space - and the command is found throughout the document.<br> This detail cost me hours of delay in learning how to program my MSO64B scope.</p> <br> &#160;