Step 6. Setting-Up The Trigger System; The Trigger And Arm Model; Selecting The Trigger Source - HP E1313A Manual

Step 6. Setting-up the Trigger System

The Trigger and
Arm Model
ARM:SOURce <source>
BUS
External
HOLD
IMMediate
TTLTrg<n>
SCP Trig
Selecting the
Trigger Source
86 Using the HP E1313/E1413
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Figure 3-4 shows the trigger and arm model for the HP E1413. Note that
when the trigger source selected is
INITiate:CONTinuous ON
Using allows you to specify an event that must occur in order
ARM:SOURce
to start scanning.
TRIGger:TIMer <interval>
Trigger
Timer
Figure 3-4. Logical Arm and Trigger Model
In order to start a measurement scan a trigger event must occur. The source
of this event is selected with the
The following table explains possible choices for the
Parameter Value
BUS TRIGger[:IMMediate], *TRG, GET (for HP-IB)
EXTernal "Trig" signal input on terminal module
HOLD TRIGger[:IMMediate]
IMMediate The trigger signal is always true (scan starts when an
INITiate:... command is received).
SCP SCP Trigger Bus (future HP or SCP Breadboard)
TIMer The internal trigger interval timer (must set Arm Source)
TTLTrg< n > The VXIbus TTLTRG lines (<
, or with
TIMer IMM
, the remaining sources become arm sources.
Only while
INIT:CONT is ON
TRIG:SOUR is IMM
TRIGger:SOURce <source>
TIMer
TRIGger:SOURce <
Source of Trigger (after INITiate:... command)
n > = 0 through 7)
&
Internal
Trigger Signal
Trigger
Enable
Trigger
Counter
TRIGger:COUNt <count>
source command.
>
source parameter.
< >
Chapter 3