Urrea UD87 Manual De Usuario página 37

Positive and Negative Duty Cycle
To measure duty cycle, set duty to either
positive or negative by using the Menu key 4.
When you measure negative duty cycle, a " - "
symbol shows in the secondary display.
Measures positive Duty Cycle
Measures negative Duty Cycle
Positive Duty Cycle:
% duty = x 100 (above trigger point).
Negative Duty Cycle:
% duty = (1- ) x 100 (below trigger point).
Pulse Width Measurement
The pulse width measurement function
allows you to measure the amount of time
a signal is high or low within a given period.
The measured waveform must be periodic.
Resistance ( ,
Measurements (Resistance,
Continuity and Capacitance)
CAUTION: TO AVOID DAMAGING THE
METER OR THE EQUIPMENT UNDER TEST,
REMOVE ALL POWER FROM THE CIRCUIT
AND DISCHARGE
CAPACITORS BEFORE
RESISTANCE.
and )
ALL HIGH-VOLTAGE
MEASURING
The available resistance ranges are:
50 Ω, 500 Ω, 5 KΩ, 50 KΩ, 500 KΩ,
5 MΩ and 50 MΩ.
Measurement:
Menu key:
Connect leads:
Primary display:
Secondary display:
Measurement:
Menu key:
Connect leads:
Primary display:
Secondary display:
Measurement:
Menu key:
Connect leads:
Primary display:
Secondary display:
E N G L I S H
Resistance (default)
(no selection)
(fig. B)
Ω
S (conductance)
Continuity
(fig. C)
Ω
or (beeps
on short)
Capacitance
(fig. D)
Capacitance
"–"
37