Hioki DSM-8104, Instruction Manual

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Table 5.8 Operation in Trigger Modes
Trigger Mode Operation
Internal Trigger
[INT] Measurement is performed continuously on timing
generated inside the meter.
Manual Trigger
[MAN] Performs one measurement when the [MAN.T] key is
pressed on the panel or a trigger GP-IB command is
input.
External Trigger
[EXT] Performs one measurement when trigger input is
made to “EXT TRIGGER” input in the rear from the
outside.
(3) Trigger mode change
Each pressing of the [F1] TRIG key alternately changes the trigger mode to
Internal Trigger, Manual Trigger and External Trigger modes.
A side mark (“
► ”) indicates a trigger mode that is selected.
Internal Trigger
►
INT TRIG
Manual Trigger MAN
External Trigger EXT
(Note: Example for internal trigger)
5.1.9 Creating a program
A program can be set for sequential measurement that will be useful when the time for
impressing measuring voltage accurately to the sample needs be controlled accurately.
Sequential measurement presets the following items and enables inspection under the
same conditions.
(1) Discharge 1: Set a discharging time before impressing voltage.
(2) Charge: Set a time for impressing voltage before starting measurement.
(3) Measurement: Set a time for measurement.
Measured values after these set times are output.
(4) Discharge 2: Set a discharging time after finishing measurement.
[Warning]
Residual measuring voltage sometimes still remains inside the sample after
measurement is finished when high voltage is impressed in manual measurement.
Removal of a sample immediately after measurement is hazardous as there is a
risk for an electrical shock. Set a time for Discharge 2 and remove a sample
after sample is thoroughly discharged.
[Notices]
1. When shut down, the DSM-8104 is always in a discharge state. Set Discharge
1 when necessary taking the jig and scanner that have contacted the outside
into consideration. Discharge 1 is almost irrelevant when the DSM-8104 is
used independently.
2. The state between the measuring input terminal and [OUTPUT] terminal in a
discharging condition (also during a shutdown) is the one to which a circuit that
has a set current limiter and input resistance (about 100
Ω ) of the current
measuring unit in series is connected.