FLIR Extech 380947 User Manual Download Page 3

380947-EN-V3.1-3/12 

3

Display icons 

   Low 

battery 

DC 

  

Direct current 

AC 

 Alternating 

current 

  

 Minus 

sign 

AUTO

 

Automatic range (frequency only) 

MAN 

Manual range 

ZERO

 Zero 

function 

HOLD

 HOLD 

function 

MAX

  

Highest  reading 

MIN 

 

Lowest reading  

A

 

 

Current unit of measure 

M

 

 

Prefix MEGA (millions of units) 

k

 

 

Prefix KILO (thousands of units) 

Hz

   

Hertz (unit of measure for frequency) 

 

Bargraph display 

The 40 segment bargraph display shown below is a graphical interpretation of the measurement. It 
is displayed under the display digits on the LCD. 

The bars in the bargraph indicate a presence of an electronic signal. The more bars showing, the 
higher the signal. The digits below the graph help the user see how many bars are showing. If 40 
segments are showing, the bars will reach the ‘40’ mark, if 20 bars are showing the bars will reach 
the ‘20’ mark. 

The bargraph is to be interpreted based on the range the meter is in while the measurement is 
being made. If the bargraph shows 40 segments lit, then the signal is at the highest end of the 
meter’s present range. 

 

 

 

 

 

 

 

 

 

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