8
3.3
●
Cautions for measurement
3.3.1 When overlaying the DC voltage
Apply the voltage 60VDC or less.
After the measurement, the capacitor inside the meter is charged with voltage, so let the
probe short-circuit for a few seconds to discharge it.
3.3.2
Others
A big error may occur when the samples with inductance or capacitance is measured.
If the meter is used near the source of noise (high frequency furnace, high noise power line,
inverter power source etc.), such noise may enter the input line and affect the measurement.
Avoid the use in such a site or keep the sufficient distance from the source of noise.
3.4
●
Connection of analog output
The analog output proportional to the measured resistance value is output.
(The analog data proportional to the resistance value is output even
during the ratio display.)
Make a connection of the cable to the analog output terminal, applying
the cable end treatment as the
Fig. 3.4.1
shows.
Push down the release knob with a screwdriver or else and insert the
cable to the terminal.
Length to cut = 9~10mm
Applicable
cable:
AWG28~AWG32
Fig.
3.4.1
Data
output
:
0~3VDC
0 display = 0V, 30000 display = 3.000V
Conversion
system
:
D/A
conversion
system
Resolution
:
1mV
Accuracy
: Accuracy of resistance measu 0.2% F.S.
Output
terminal :
Screw-less
terminal
3.5
●
Key-lock
The key-lock is the function to prohibit the key operation on the front panel so that the
measuring condition is not altered.
While the key-lock is in operation, the
LOCK
lamp is lit up.
To operate the other keys, cancel the key-lock first.
It is not operable in the ONLINE or HOLD status.
How to key-lock
While the
LOCK
lamp is turned off, press
SHIFT
(
LOCK
) key
for 3 seconds or more.
Reset of key-lock
While the
LOCK
lamp is lit up, press
SHIFT
(
LOCK
) key for 3
seconds or more.
SHIF T
(LOCK)
LOC K
ANALOG OU T
MAX
ZERO
+ -
