211102
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Vedpak 137_Version 2_110609
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ton do not effect on diode and continuity test function.
b. The secondary function of this button is backlight
enable and disable. If you press it more than two
more than 2 seconds again will make the backlight off.
no effect on them.
4. RANGE Key
a. Range key is the auto/manual measurement key that
acts with trigger. Power-on default is auto measure-
system will jump up one mode for each press untill
will switch back to auto measurement status.
5. REL Key
a. This key is the relative value measurement key that
acts with trigger.
b. To press the key when the system is in power on
the key is pressed in the memory as the reference
value will be the difference that the entry value de-
ducts the reference value. That is (current reading) =
entry value/reference value.
the Rel function will be cancelled.
the display value in the memory as the reference
the difference that the entry value deducts the
reference value.
6. MAX/MIN Key
the maximum measured value all along; press it
minimum measured value.
b. It automatically enters manual range after
and SELECT will not effect under this mode.
c. It automatically save the maximum or minimum value
upon entering MAX/MIN mode.
d. Auto power-off functions are cancelled after entering
MAX/MIN mode.
it exits out MAX/MIN mode.
3. Add - keys selects the
measurement function
Set the rotary function switch to “AUTO” position.
-
exit the status of auto selection and then enter the spe-
DC and AC Voltage measurement
a. Connect the black test lead to socket
Ω/Hz / / /
b. Press SELECT
measuring mode.
c. Connect the probes across the source or load
under measurement.
Resistance measurement and Diode, Audible Conti-
nuity Test
a. Connect the black test lead to socket
Ω/Hz / / /
b. Press SELECTΩ”
measuring status.
c. Connect the probes across circuit to be tested.
Caution: Ensure that the circuit to be tested
is “DEAD”.
Capacitance measurement
shorting its leads together. Use caution in handling
capacitors because they may have a charge on them
of considerable power before discharging.
b. Connect the black test lead to socket
Ω/Hz / / /
c. Press SELECT
d. Press REL
function to eliminate the zero error.
e. Connect the probes across capacitor to be
tested.
will be approx. 15 sec.time lag.
Frequency and Duty cycle measurement
a. Connect the black test lead to socket
Ω/Hz / / /
b. Press SELECT
status and press Hz/DUTY key to choose function.
c. Connect the probes across the source or load
under measurement.
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