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3.4 Setting Measurement Start Conditions (Trigger Source)
30
Measurements can be started in two ways.
Continuous measurement (
:INITIATE:CONTINUOUS ON
) is the normal trigger state when operating from
the front panel. Selecting the internal (INT) trigger source activates continuous triggering ("free-run"). When
external (EXT) triggering is selected, each external trigger event initiates one measurement. Continuous mea-
surement can be disabled by sending the
:INITIATE:CONTINUOUS OFF
command via RS-232C or GP-
IB. When continuous measurement is disabled, trigger acceptance is controlled only by the host (computer or
PLC).
See:
for trigger command: "Triggering" (p. 138), "9.8 Data Exporting Methods" (p. 148)
3.4
Setting Measurement Start Conditions
(Trigger Source)
Trigger signals are automatically generated internally for continuous
measurement.
Measure with internal (INT) triggering
To measure automatically
Measurements are triggered by an external signal.
Manual measurement triggering is also available.
•
Apply a trigger signal at the EXT I/O connector (p. 85)
•
Send the
TRG
command by communications interface (p. 126)
•
Press F4 [MANU] (only appears when EXT is selected)
Measure with external (EXT) triggering
To measure at specific times
To retain measured values
• When internal triggering is enabled, the EXT I/O TRIG signal and the “
TRG
” command are ignored
(except for memory storage and statistical calculations).
• To measure samples such as inductors that require time to settle, adjust delay time DELAY2. Start with
a long delay, and gradually shorten it while watching for the measured value to settle.
See:
"4.2 Setting Pre-Measurement Delay" (p. 42)
• When external triggering is enabled, the Auto-Memory function is disabled by force.
1
Open the Basic Settings screen.
2
Select internal (INT) or external (EXT) triggering.
3
Return to the Measurement screen.
The Basic Settings screen appears.
1
Selection
2
Internal trigger
External trigger
(default)
Press F3 [EXT] to display the F4 [MANU] indicator.
Press to trigger a measurement manually.
Press the up/down
cursor keys to
change the setting.
Содержание RM3542
Страница 2: ......
Страница 6: ...Contents iv ...
Страница 16: ...Operating Precautions 10 ...
Страница 26: ...1 3 Screen Organization 20 ...
Страница 32: ...2 3 Turning the Power On and Off 26 ...
Страница 46: ...3 8 Confirming Faulty Measurements 40 ...
Страница 64: ...4 12 Compensating for Thermal EMF Offset Offset Voltage Compensation OVC 58 ...
Страница 84: ...6 4 Auto Exporting Measured Values at End of Measurement Data Output Function 78 ...
Страница 90: ...7 3 Printing 84 ...
Страница 172: ...9 10 Device Compliance Statement 166 ...
Страница 190: ...11 4 Disposing of the Instrument 184 ...
Страница 200: ...Appendix 5 Dimensional Diagram A10 Appendix 5 Dimensional Diagram ...
Страница 214: ...Index Index 4 ...
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