TESTBOY TV 450
Front panel
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3 Instrument description
3.1 Front panel
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Figure 3.1: Front panel (picture of TESTBOY TV 450 (TYPE B))
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.
