138 Chapter 19 - Measurement Data Recording (DataGrabber)
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19.2
Evaluating of the recording
Once the DataGrabber has finished (automatically or stopped manually), you can use the cursor
function to determine the time at which a possible error occurred in the system. To do this, you use
the
←/→
keys to move the cursor (represented by a triangle) to the required position.
The next figure shows sample measurement data that was recorded for a DVB-C channel.
Figure 19-4 DataGrabber recording packed errors
The level, MER, BER and packet errors (relative) are recorded for the DVB-C mode.
The start time and time at which recording ended (normally) appear in the lower left and lower right
of the display respectively. The cursor time is marked with a ‘*’. The measured value at the cursor
position is displayed above each diagram. In the above example, 46 packet errors occurred at
09:38:54. PE=211 means that an absolute number of 211 packet errors occurred in the period from
09:37:21 to 09:42:21.
19.3
Documenting a recording
The graphics screen can be saved as a bitmap file for documentation purposes. Refer to chapter
17.10 – Hardcopy for further information.
