Testboy TB 317 Manual De Instrucciones página 20

Operation
Explanation of switches, buttons and jacks
20
(1) Display
(2) BL button
Pressing this button switches
on backlighting/measurement
location lighting.
(3) SEL button
This button can be used to
switch the instrument be-
tween categories.
(4) Measurement function
selection switch
Switches the instrument on.
The measurement function is
selected depending on the
switch position.
(5) Measurement jack A
Measurement jack to be used for
measuring current.
(6) Measurement jack V/Ω
Measurement jack to be used
for measuring voltage/re-
sistance.
(7) COM/earth jack
(8) HOLD button
This button enables the cur-
rently displayed value to be
saved.
(9) Measurement location
lighting
Measurement location lighting
located at the front for work-
ing in dark spaces.
(10) NCV sensor
This button enables contact-
less detection of live lines.
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Testboy TB 317