CoCo-80 User Manual
113
Saving and Recording Data
Ranging from different applications, several ways are devised to save the signals
that are being measured. The media of storage can be either internal flash
memory or SD memory card.
Save Long Time Waveform Signal: the time streams can be saved either
automatically by a preset schedule or manually.
Save Block Signals: The transient capture time signals, frequency signals or
other block signals can be saved automatically or manually.
Save Points: The current value of the time streams, or RMS of a spectrum, or
multiple statistics of signals, can be saved automatically or manually in to one file
over long period of time. This is particularly useful in the monitoring applications.
The data can be saved either manually or automatically.
Save Long Time Waveform Signals
The Rec./Stop Button is used to control the streaming of time stream data to
memory. After a CSA project is selected, pressing the Rec./Stop button will start
the display and also start recording the time stream to memory. The red flashing
Rec icon at the top of the screen indicates that the data is recording.
To stop the recording press the Rec./Stop button again. The red flashing Rec icon
will not be displayed indicating that the recording has stopped.
Before a time stream can be recorded it must be defined in the Parameter
Settings/Time Steam Recording Setup. If no time streams are defined in this
setting when the Rec./Stop button in pressed then a message will indicate that no
signal are selected.
The Rec./Stop button can also be pressed after the Run button is pressed. The
Run button starts the display of live signals but does not start recording. After a
recording is stopped the display will continue to display live signals until the Hold
button is pressed.
A special data compression algorithm is developed in order to save the storage
space. It only applies to time stream recording.
For uncompressed data, use following formula to calculate the total time duration
that you can record:
Total Installed Flash Memory in Bytes = (No. of Channels) * (Recording
Time in Seconds) * (Sampling Rate) * 8 Bytes * 1.2
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