4.9 Setting the Contact Check
4-42 ZM2376
Operational outline of contact check
The contact check of ZM2376 is a simple type which detects mainly a contact failure of H
CUR
terminal in 4-terminal connection.
The contact check of ZM2376 can be used in the following ranges.
• Measurement frequency 1mHz 1MHz
• Measurement signal level 100mV 5V
• Cable length 0m, 1m, 2m
The contact check should be disabled outside this range.
When a contact failure is detected:
Panel display
The measured value is displayed as NC.
Comparator
Failed.
(OUT OF BINS for Bin sorting, or P-HI and S-HI for limit comparison)
Handler interface
/NC signal is at low level when the comparator function is enabled.
Measured value output in the remote control
The measured value is becomes as error value 9.9E+37.
The measurement status is becomes as 2, which indicates a contact failure.
ZM2376 checks the relation between drive signal and measured values of voltage, current and
impedance of DUT when obtaining the measured results of AC impedance. If there is incoherence, it
is regarded as contact failure (NC).
In the DC resistance Rdc measurement, a contact failure cannot be detected.
In 2-terminal connection, the contact check does not work. Use the low capacitance check.
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