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USER'S MANUAL. PROLINK-4
If any key or the rotary selector is pressed during the acquisition process, the
acquisition process will abort and the screen will display the message "DL STOPPED"
(Datalogger deactivated).
4.9.4.4.4
Exiting the Datalogger Function
To exit the Datalogger function select the Exit field using key
press the rotary selector [4].
4.9.4.4.5
Example of Datalogger Function Applications.
The Datalogger function has many applications such as channel equalisation
and measuring signal attenuation at each pickup.
Band Equalisation (frequency acquisition)
For this application you will need to use a noise generator as the signal source
in the place of a receiver antenna. If, lets say, you wish to verify equalisation on
the VHF band, then:
1.
Define the following tuning frequencies at 8 memory positions: from 50 to
450 MHz in 50 MHz steps. The measurement to be taken will be the level
measurement.
2.
In the Datalogger function, activate the columns related to the memories
defined in the previous step.
3.
Next place the cursor on the row where you want to store the
measurements and press the rotary selector [4] until the first of the cells
blinks.
The measurements obtained will allow you to verify if the signal level is uniform
across the entire band.
Measuring signal level fluctuation at a pickup (acquisition over a time period)
1.
Define the acquisition time interval Measure interval (1 h for example).
2.
Activate a column (a measurement configuration you consider significant).
3.
Activate the necessary number of rows to be able to perform the study
over the decided upon period of time, taking into account the previously
defined acquisition interval (e.g. for a 24 hour study with an acquisition
interval of 1 h you will need to activate 24 rows).
4.
Finally place the cursor on the activated column and press the rotary
selector [4] until the first active cell blinks.
02/2003
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