Hioki LR8450 - Page 112

108
FAQ (Frequently Asked Questions)
Triggers
Question Answer See
The instrument is displaying the
message [Waiting for trigger...], and
it won’t make measurements.
When a trigger has been set, recording will not
start until the trigger conditions are satised.
You can forcibly activate the trigger.
“2 Trigger Function”
and “2.7 Forcibly
Activating the
Trigger” in the
Instruction Manual
Settings
Question Answer See
How can I hide unnecessary
channels?
Set the waveform display color to [OFF]. “1.4 Conguring
Input Channels"
in the Instruction
Manual
Can I measure temperature when
there’s a voltage?
You can measure temperature as long as the
voltage does not exceed the maximum channel-
to-channel voltage or the maximum channel-
to-ground voltage. If the voltage exceeds either
of those values, avoid applying the voltage to
the input terminals, for example by using a non-
grounded thermocouple.
“Measurement
precautions”
(p. 10)
Should I set reference junction
compensation to [EXT] or [INT]?
What is the accuracy?
Use the [INT] (internal) setting when connecting
the thermocouple to the module’s terminal block.
The measurement accuracy is determined by
adding the temperature measurement accuracy to
the reference junction compensation accuracy.
Example: When measuring a temperature within
the range of 0°C to 100°C with a K thermocouple
The accuracy is obtained by adding the reference
contact correction accuracy of ±0.5°C to the
temperature measurement accuracy of ±0.5C°,
yielding a value of ±1.0°C.
“Measuring
temperature (with
thermocouples)”
in the Instruction
Manual
Saving data
Question Answer See
Can I use any commercially available
SD memory card or USB drive?
Use only Hioki optional SD Memory Cards or USB
Drives. Proper operation is not guaranteed when
using commercially available SD memory cards
and USB drives.
“2.7 SD Memory
Card and USB Drive”
(p. 68)
USB drives with security functions such as
ngerprint authentication cannot be used.
Can I replace media while auto save
is in progress?
Choose [Eject] on the top right of the waveform
screen and press the ENTER key.
“Replacing (ejecting)
media during real-
time save operation”
in the Instruction
Manual
For how many days can the instrument
record?
Available recording length settings are determined
by the number of channels and the recording
interval.
Example: For a recording interval of 1 s with 15
channels and 1 GB media, you can record for
about 400 days.
“11.9 File Size” in the
Instruction Manual
HIOKI LR8450A963-02