Promax PROLINK-4C, Руководство пользователя

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USER’S MANUAL. PROLINK-4C
Page 66 02/2003
c) Multiple acquisitions.
All the measurements defined by all the activated rows and columns will be
taken, in the case where more than one row has been activated the time
interval between measurements will be that defined in the Measure interval
field of the configuration menu.
Process: select the Run function and press the rotary selector [4]. If no
measurement matrix element has been previously activated, the bottom of
the screen will show the message "NOT CELLS SEL.".
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 [31] then
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).