Instrument description
30
Testboy
®
TV 431
Buttons on the device
Buttons
Description
1
Activates the memory function: The measurement data is transferred to the memory.
2
Activates the display function; changes the position of the cursor to display the saved files.
3
1: in DC-V-, AC-V- and continuity mode, display of the highest, lowest and average value, the upper
and lower limit values, and the relative value
2: in insulation test mode, display of the highest, lowest and average value, the upper and lower limit
values, the pre-set time function, the differential absorption ratio and the polarisation index.
4
Enter button for confirmation.
5
Switches the background illumination on or off; if activated, the background illumination switches it-
self off automatically after 10 s.
6
Activates the time function.
7
Activates the data hold function (DC-V-, AC-V-, continuity mode) or the locking function (insulation
test mode).
8
Activates the relation function (DC-V-, AC-V-, continuity mode); change the cursor position.
9
Activates the comparison function.
10
Selects a test output voltage for the insulation test
11
Activates the insulation test
Rotary switch
Position
Function
OFF
Switches off the instrument
V
DC voltage: 0.1 V – 1000 V
V
AC voltage 0.1 V – 750 V
Resistance and continuity 0.01 Ω – 200.0 Ω
Insulation
Insulation test 0.01 MΩ – 100.0 GΩ, test output voltage 250 V (factory setting), 500 V, 1000 V,
2500 V, the test output voltage selected is saved.
