Hioki RM3542 - Chapter 10 Specifications (cont.); Resistance Measurement Accuracy

Chapter 10 Specifications
170
(8) Probe Short-Circuit Detection
(9) Contact Improvement Function (Contact Improver)
Current Monitor Function
Operation Detects faults that can obstruct normal measurement current. This function cannot be
disabled.
Voltage Level Monitor Function
Operation Detects an error when the detection voltage is unstable (for each range)
Default state ON, Normal (Loose is the default only for the 100 M range)
Setting ON / OFF
Threshold setting Loose
Normal
Severe
Comparator Decision and Display Indications
Table 3. Measurement States and Display Indications
Constant Current Monitor
PASS FAIL
Contact Check
Voltage Level Monitor
PASS
Measurement value is displayed
Normal Decision
Out-of-Range Display
Hi/Lo Decision
FAIL
Contact Error
No Decision
Contact Error
No Decision
Operation An error is detected within a certain period after EOM signal output if a connection last-
ing more than 1 ms is found between H
POT
and H
CUR
or L
POT
and L
CUR
terminals.
Default state OFF, 5 ms
Setting ON / OFF
Test timing is 1 ms to 100 ms
Threshold 500  fixed (reference value)
Operation
Applies a contact improvement current (at oxidized film breakdown voltage)
between the H
POT
and H
CUR
, and the L
POT
and L
CUR
terminals. (for each range)
The PULSE setting applies the contact improvement current for only 100 µs before
measuring.
Default state ON, Current-limited to 35 mA (100m-range to 100k-range, LOW POWER: ON all
ranges)
PULSE, Current-limited to 35 mA (1000k
-range to 100M-range)
Setting OFF/ ON/ PULSE
Applied voltage 20 V
MAX
Current limit 17 mA, 25 mA, 35 mA, 50 mA (peak current reference value)