Testboy TV 455VDE-tester Testboy TV 455 Manuale Utente

 

 

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Legend:  
* Model TESTBOY TV 450 (TYPE B) 
** Model TESTBOY TV 450 

 

1  LCD 

128 x 64 dots matrix display with backlight. 

Starts measurements. 

2 TEST 

TEST 

Acts also as the PE touching electrode. 

3 UP 
4 DOWN 

Modifies selected parameter. 

5*  MEM 

Store / recall / clear tests in memory of instrument. 

5**  CAL 

Calibrates test leads in Continuity functions. 

6  Function selectors   Selects test function. 

7 

Backlight, 
Contrast 

Changes backlight level and contrast. 

Switches the instrument power on or off. 

8 ON 

/ 

OFF 

The instrument automatically turns off 15 minutes after the 
last key was pressed. 
Accesses help menus. 
In RCD Auto toggles between top and bottom parts of results 
field. 

9*  HELP /  CAL  

Calibrates test leads in Continuity functions.