Gigahertz Solutions HF58B-r -Analyser, Electric smog meter, 530-085 Data Sheet

Digital High Frequency Analyser HF58B-r

 

 

© Gigahertz Solutions GmbH, 90579 Langenzenn, Germany 

Revision 4.5  (Febuary 2006)

 Page 

14 

The battery compartment is at the back of 
the analyzer. To remove the lid, press on the 
grooved arrow and pull the cap off. Insert 
only rechargeable batteries. If you use 
regular alkaline (non – rechargeable) bat-
teries do not use a charger or AC-adapter! 

 

This function conserves energy and extends 
the total operating time.  

1.  In case you have forgotten to turn OFF 

the HF analyzer or it has been turned ON 
accidentally during transport, it will shut 
off automatically after 40 minutes of con-
tinuous use. 

2.  If “low batt” appears vertically between 

the digits in the center of the display, the 
HF analyzer will turn OFF after 3 min in 
order to avoid unreliable measurements. 
In that case charge the rechargeable 
battery. 

3. The built-in function, Auto-Power-Off, 

will only be de-activated by plugging in a 
2.5mm jack into one of the output sock-
ets AC or DC, see “Conditioning…” two 
sections up. The function will be re-
activated to automatically prevent total 
discharging of the battery by further op-
eration. 

 

The shielding effect  of the various materials 
is stated normally in “- dB”, e.g. “– 20 dB”. 

Conversion of shielding effect into reduction 
of power density 

„-10dB“ is measured value divided by 10 
“-15dB” is measured value divided by ~30 
”-20dB” is measured value divided by 100 
”-25dV” is measured value divided by ~300 
”-30dB” is measured value divided by 1000 
etc. 

Please be aware of the manufacturer’s notes 
about the normally achievable shielding ef-
fects, as 100 % shielding is almost always 
impossible. Partial shielding reduces the at-
tenuation considerably. That is why shielding 
of seemingly radiation tight adjacent areas is 
highly recommended.