Hioki 3802-50 - DUTY Ratio Measurement

2.9 DUTY Ratio Measurement
29
1
2
3
4
5
6
7
8
9
10
11
Measurement
The duty ratio is the ratio between the pulse width and the
pulse cycle. This instrument displays this ratio in terms of
100 (%).
Plus slope duty ratio (D+): D+ = tw
+
/T × 100 (%)
Minus slope duty ratio (D-): D- = tw
−
/T × 100 (%)
2.9 DUTY Ratio Measurement
T
t
Plus slope pulse
width
Minus slope pulse
width
Pulse cycle (=tw
+
+ tw
-
)
0 V
tw
-
tw
+
1.
Set the function switch.
❖ See Section 2.2 Voltage Measureme
nt
(page 19)
❖See Section 2.3 Current Measurement (pag
e
21)
2. Use the SHIFT key to select either D
C
or AC.
3. Use the Hz key to select the DUT
Y
ratio.
4. Connect the test leads to the test te
r-
minals.
5. Read the value displayed in th
e
main display.
To switch the pulse slope polarity ,
hold down the SHIFT key.
SHIFT
Hz
<Example>
When measuring AC voltag
e
(% lights)
AC
DC
The bar graph conforms with voltage measurement or
current measurement.