HP 8530A, Руководство по эксплуатации и программированию, Страница: 192 / 439

Stimulus Controls Applicable to All Domains
Figure 6-14. Custom External Triggering Flowchart (one parameter)
How these Functions W ork when Multiple P arameters are Being Measured
If more than one parameter is being measured, the receiver will check the ON/OFF condition
of each softkey (
N NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
TRIGGER: PARAM 1 ,
N NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
TRIGGER: PARAM 2 ,
N NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
TRIGGER: PARAM 3 , and
N
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
TRIGGER: PARAM 4 ) before it measures them. Refer to Figure 6-15. If
N
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
TRIGGER: PARAM 1
is on, for example , the receiver will wait for a trigger before it measures parameter 1. This
process repeats for each parameter .
EXAMPLE 1.
TRIGGER: STIMULUS ON
TRIGGER: P ARAM 1 OFF
TRIGGER: P ARAM 2 OFF
TRIGGER: P ARAM 3 OFF
TRIGGER: P ARAM 4 OFF
In this example , the receiver will:
1. W ait for one trigger before moving to the initial angle or frequency (stimulus value).
2. When the trigger arrives , the receiver will move to the initial stimulus value (start frequency
or start angle), then measure all four parameters .
3. This process repeats for each successive stimulus value .
Note that only one trigger is required per stimulus point. Thus , the receiver can trigger o the
Record Increment output from a positioner controller .
The most common use for TRIGGER: STIMULUS is when using an RF source that is not
controlled by the HP 8530. TRIGGER: STIMULUS allows you to move the source to the next
stimulus point, then have the receiver make the measurement.
EXAMPLE 2.
TRIGGER: STIMULUS OFF
TRIGGER: P ARAM 1 ON
TRIGGER: P ARAM 2 OFF
TRIGGER: P ARAM 3 OFF
TRIGGER: P ARAM 4 OFF
Stimulus Functions 6-25