2-13
IM 765501-01E
Explanation
of
Functions
3
2
1
6
5
4
9
8
7
12
11
10
15
14
13
18
17
16
Index
App
2.5
Triggers
(See section 4.1 for the procedure)
The following three triggers are available for starting a source measure cycle.
Internal trigger (Int):
The internal constant period timer is used as triggers. The cycle
can be set in the range of 100
µ
s to 3600 s.
External trigger (Ext): The rising edge of the voltage signal that is applied to the BNC
input/output terminal or pin 2 on the external input/output
connector on the rear panel is used as a trigger.
Immediate (Imm):
The GS610 does not wait for a trigger. When the current source
measure cycle is complete, the next source measure cycle starts
immediately. This trigger can be selected only when the
measurement function is ON.
When the GS610 is waiting for a trigger (when the source measure cycle is complete),
the wait indicator on the display shows “WaitTrigger.” If a trigger is activated, the TRIG
key on the front panel blinks, and WaitTrigger of the wait indicator is turned OFF until the
source measure cycle is complete.
When using an external trigger, manual trigger using the TRIG key on the front panel
and triggers activated with communication commands (“*TRG” or GroupExecuteTrigger)
are valid.
If you wish to activate triggers only with communication commands, select external
trigger and do not apply triggers to the BNC input/output terminal or pin 2 on the external
input/output connector on the rear panel.
Note
If another trigger is activated in the middle of a source measure cycle, that trigger is
discarded. If the trigger timing is not synchronized to the source measure cycle period (the
starting point) as in this case, the sampling error indicator (SampleErr) illuminates in the
status display area of the display.
To prevent sampling errors from occurring, increase the interval at which triggers are
activated or shorten the source measure cycle (see section 2.2, “Source Measure Cycle”).
Below are ways of shortening the source measure cycle.
• Set the shortest source delay and measurement delay possible.
• If measurements are not needed, turn the measurement function OFF. When making
measurements, set the shortest integration time possible.
• Turn OFF the auto zero function (see section 2.4, “Measurement”).
• Turn OFF the auto range function of the source and measurement range settings.
• Turn OFF various computation functions.
• When performing a sweep, turn OFF the auto storage function (see section 2.8, “Store/
Recall”).