Tonghui TH2827 Series - Trigger Mode

TH2827 Series Operation Manual Chapter 3 Introduction to [MEAS]
25
 Test level (LEVEL)
 Test range (RANGE)
 Test speed (SPEED)
 DC Bias (DC BIAS)
 Trigger Mode (TRIG)
 Auto Level Control (ALC)
 Delay Time (DELAY)
 Output Resistance (Rsou.)
 Average times (AVG)
 Voltage Level Monitor ON/ OFF (Vm)
 Current Level Monitor ON/ OFF (Im)
 Bias Current Isolation ON/ OFF (ISO
)
 Deviation Test Mode A (DEV A)
 Deviation Test Mode B (DEV B)
 Deviation Test Reference Value A (REF A)
 Deviation Test Reference Value B (REF B)
Some zones listed below are as same as that on <MEAS DISP> page, so it is not
necessary to introduce in this section, but others will be introduced briefly in the
following sections.
 Test function (FUNC
)
 Test frequency (FREQ)
 Test level (LEVEL)
 Test range (RANGE)
 Test speed (SPEED)
 DC Bias (DC BIAS)
 DC Voltage Source (DC SRC)
3.5.1 Trigger mode
There are 4 trigger modes on TH2827: INT, MAN, EXT and BUS.
When the trigger mode is set as INT, TH2827 will make sequential and repeated
tests.
When the trigger mode is set as MAN, press [TRIGGER] once, TH2827 will make
one test.
When the trigger mode is set as EXT, once the HANDLER interface receives a
positive impulse, TH2827 will execute one measurement.
When the trigger mode is set as BUS, once the IEEE 488 interface receives a
TRIGGER command, TH2827 will execute a test. The BUS mode cannot be set on
the front panel.
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Note: In the process of testing, when TH2827 receives a trigger signal, it will be
ignored. So the trigger signal should be sent after the test is done.
When optional HANDLER interface triggers TH2827, the trigger mode is set