Hioki CM7290, Инструкция по эксплуатации, Страница: 64 / 80

60
Error Displays
Problem Check Solution See
Display value
is higher than
expected
Frequency measurement
• Is a large magnetic or electric
field, or large noise, being
generated nearby?
• Distance the unit from the
noise generation source. −
• Is the current input value 300
dgt. or more of the current
range?
• Use an appropriate range
and/or an appropriate current
sensor.
p. 16
• Are you measuring a full-
wave rectified waveform?
• If you are, the frequency will
be double its pre-rectification
level.
−
Output value
is higher than
expected
• Has the correct output mode
been selected?
WAVE:
Waveform
RMS: Root mean square
PEAK: Maximum absolute
value at update time
interval, with sampling
of 2 kS/s
FREQ: Frequency
p. 17
Display value
fluctuates
• Any poor contacting of the
sensor cables, etc.?
• Have the item(s) repaired if
you suspect poor contacting.
−
• Does the display/output
update time (rate) selected
match the current's
frequency?
• Change the response speed
and set the display/output
update time (rate) according
to the current’s frequency.
p. 37
5.2 Error Displays
If any of these errors is displayed in the LCD display area, repair is required. Contact
your authorized Hioki distributor or reseller for repair.
Error display Cause
Corrective action/more
information
Err 001
ROM error
Program
If any of these errors is displayed in
the display area, repair is required.
Contact your authorized Hioki
distributor or reseller for repair.
Err 002
ROM error
Adjustment data
Err 004
EEPROM error
Memory data
Err 005
ADC error
Hardware failure
Err 008
Bluetooth ® error
Hardware malfunction
(only for CM7291)