EHP-50F Stand alone mode 5-1
5 - EHP-50F Stand alone mode
5.1 Stand alone mode
description
EHP-50F has been designed to be used also in stand-alone mode. This
mode is useful because no external devices is necessary to the analyzer
during measurements. Once the measurement parameters have been
programmed through a PC, the EHP-50F analyzer can start its acquisition
by storing the data over 24 hours in a stand-alone mode. It is necessary to
position it over the TR-02A tripod and to activate the start. After 24 hours it
will stop automatically and later it would be possible to download all the
data to the PC by using the provided EHP-TS PC software. From PC it is
possible to select to measure the electric or magnetic field, to select the
range, the Highest or Wideband mode, the desired SPAN and the sampling
rate of one minute or 30 seconds.
Some typical applications are:
- Magnetic fields near high, medium and low voltage transformers
- Measurements in proximity of power line
- Safety measurement at worker’s site
- Measurements close to machines, air conditioning systems, home
appliances etc.
- Development of new products
Fig. 5-1 Shorting loop
To start the stand-alone acquisition it is necessary to follow this procedure:
- Turn OFF the EHP-50F.
- Remove the fiber optic connected to PC.
- Insert the small optical bridge connector into the fiber receptacle of
EHP-50F.
- Position it on TR-02A tripod or use the small tripod supplied with
EHP-50F (the provided 50cm extention rod must be used, specially
in case of Electric field measurement, to avoid any influence from
the support plane).
- Turn ON the EHP-50F and you will see the led flashing red and
green for about one minute.
- Go away from the analyzer in order not to influence the
measurement.
- Wait 24 hours for the completion of the one-day measurement.
The led of EHP-50F will flash every second to inform that it is ON with red
light. After every minute (or 30 sec) the led will become green for the time
requested by the analyzer to perform one measurement. The time t
hat the
led remain green will depend on the selected SPAN. Lower Spans require
longer measurement time.
The acquisition can be terminated earlier than 24 hours. Just turn off
the EHP-50F and run the application to download the data to the PC.
Document EHP50FEN-50501-1.63 - © NARDA 2015
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