Delay Measurement using TDS 3014

[TinCling]

Hi

I am using TDS 3014 oscillosscope to measure the time delay between two signals on ch 1 and ch 2. The IVI driver gives me the provision to configure delay measurement by specifying rising egde to rising edge sort of details. However I cannot find any function to actually read the measurement.

The scope does have the capacity to perfrom this function though but how do I do it through Lab Windows.

Thanks

[JamesC]

Hi TinCling,

To set the delayed trigger do you use the process layed out in the attached screenshot.
If you don't please can you specify how you set up your delayed trigger.

Once you have setup your triggers I would have thought you could just use a read. Please could you try this and report back on how it went.

Regards
JamesC
NIUK and Ireland

[MJF]

I don't think TinCling is trying to use delayed triggering, if I interpret the question correctly, he has configured the scope to do a delay measurement and wants to read the value of that measurement. In other words, he is triggering on a waveform and then wants to read the time-interval between the triggered waveform and a second waveform.

I'm sure the driver in use is an IVI driver. While IVI is a good concept, I have found them to be lacking in some specific instrument functionality. They are particularly lacking in stuff like this where the scope has a measurement capability built in that is unique or at least not common in other scopes.

What TinCling will need to do after configuring the measurement is to write the following query command to the instrument and then read the response:

MEASUREMENT:MEAS<x>:VALUE?

Where <x> = the number of the configured measurement. The value returned will be the delay in seconds.

In cases like this, I would personally set everything up manually to ensure I get exactly what I want.

The relevant commands for doing so (not including the triggering and channel setups) are:

MEASUREMENT:MEAS<x>:SOURCE1?
MEASUREMENT:MEAS<x>:SOURCE2?
MEASUREMENT:MEAS<x>:DELAY:EDGE1?
MEASUREMENT:MEAS<x>:DELAY:EDGE2?
MEASUREMENT:MEAS<x>:DIRECTION?

Message Edited by MJF on 06-14-2006 08:48 AM