Global Specialties 3600 - Manual (Page 28)

Users Manual Model 3600
www.globalspecialties.com Page 23
Different from the start conditions, the trigger conditions sets three
trigger limit switches, <, =,>. These are useful for testing the data with
respect to the tested signals. The trigger limit switch can be set with
number keys. Press the
【1】key to connect the switch, which connects
only one in the three trigger limit switch. Once one switch is connected,
the other two switches are disconnected. The default setting of the
trigger limit switch is “=” connection.
Event Count
When the sampling process starts, the instrument stores the sampled
data in the memory. At the same time, it compares the sampled data
with the trigger conditions and the trigger limit switch. If the sampled
data satisfies the trigger conditions and the trigger limit switch it will
capture a trigger event. In some applications, the user may want to
have the trigger event appear many times in one sampling making
analysis more convenient to capture desired events. So the instrument
sets a trigger event counter after the sampling process starts. The count
value first resets and the count value increments one when it meets
the trigger event once. This happens until the count value reaches the
setting value of the trigger event and the trigger process finishes. The
trigger events count can be set with numbers in Dec, the setting range
is 1~999, the default setting of the trigger event count value is 001.
Trigger Select
The trigger select switch can be set with numbers, the key 【0】opens
the switch, the key 【1】connects the switch. If the trigger select switch
is connected, the trigger conditions, the trigger limit switch and the
event counter are all short-circuited with no use. For example, after
the sampling process starts, the instrument does not detect the trigger
conditions and also does not count the event. The trigger process
finishes unconditionally.
The default setting of the “start select switch” is “connect” in order
to make random sampling. This has no specific sampling purpose on
capturing what kind of signal. It is not necessary to set the trigger
conditions or event counter. If the setting of the start select switch
is “open”, then only the tested signal clearly and specific sampling
requirements can set the suitable trigger conditions, trigger limit switch
and event count.
Model 3600 User Manual_B.indd 23 7/2/2010 4:41:46 PM