Testboy TV 455 - Page 14

®
TV 450/455 Front panel
14
Accesses help menus.
In RCD Auto toggles between top and bottom parts of results
field.
Calibrates test leads in Continuity functions.
9 HELP / CAL
Starts Z
REF
measurement in Voltage drop sub-function.
10 TAB Selects the parameters in selected function.
11 PASS Green indicator
12 FAIL Red indicator
Indicates PASS/ FAIL of result.