Hioki 3290-10, Instruction Manual

Page: 98 / 152

92
5.3 Measurement Response Time
Measurement Modes: AC, AC+DC
1.
Press
SHIFT
→
(
SAMPLE
).
2.
The measurement response time changes.
❖
See pages 93 and 94
FAST (0.2s) : Meets specifications at 45 Hz and above.
NORMAL (0.8s) : Meets specifications at 10 Hz and above.
SLOW (8s) : Meets specifications at 1 Hz and above.
NORMAL • Unless set otherwise using the save settings function, the mea-
surement response time is set to NORMAL at power on. There is
no display indication for the NORMAL rate.
SLOW
•
SLOW
is displayed when the SLOW measurement response time
is selected.
• With the slow display update rate (measurement response time),
low frequencies (10 Hz and below) can be measured correctly in
AC+DC mode, but rapid fluctuations cannot be followed due to
the slow response.
• When
SLOW
is selected with AUTO ranging and the range
switches automatically in response to a change in measured cur-
rent, current measurement is temporarily inhibited (because the
display update is fast and measurement response is slow, range
changes are delayed). An error also occurs in MAX and MIN dis-
played values.
If the measured current is expected to change, manually select
the H range.
• For current measurements at 10 Hz and lower, accuracy in
AC+DC mode is only guaranteed with SLOW display update rate
(measurement response time).
FAST •
FAST
is displayed when the FAST measurement response time is
selected.
• The FAST response time can follow rapid fluctuations, but low
frequencies (below 45 Hz) cannot be measured correctly.
• Accuracy cannot be guaranteed for current measurements at fre-
quencies below 45 Hz.
5.3 Measurement Response Time
• Changes to the display update rate and measurement
response time are interdependent.
• MON output is independent of measurement response time.
FAST SLOW NORMAL