HP 8530A, Руководство по эксплуатации и программированию, Страница: 193 / 439

Stimulus Controls Applicable to All Domains
In this example , the receiver will:
1. Proceed immediately to the rst stimulus point, then wait for a trigger pulse before
measuring parameter 1.
2. When the trigger arrives , the receiver will measure all four parameters . Why? Since
the other three \wait for a trigger" softkeys are OFF , they will be measured along with
parameter 1.
3. This process repeats for each successive stimulus point.
This conguration is the default external trigger setup , and will work if using the Record
Increment from a positioner controller . Remember , only displayed parameters are measured. If
you only have P arameters 1, 2, and 3 on the display , P arameter 4 will not be measured.
EXAMPLE 3:.
TRIGGER: STIMULUS OFF
TRIGGER: P ARAM 1 ON
TRIGGER: P ARAM 2 OFF
TRIGGER: P ARAM 3 ON
TRIGGER: P ARAM 4 OFF
In this example , the receiver will:
1. Proceed immediately to the rst stimulus point, then wait for a trigger pulse before
measuring parameter 1.
2. When the trigger arrives , the receiver will measure parameters 1 and 2, then it will stop and
wait for another trigger .
3. When the second trigger arrives , the receiver will measure parameters 3 and 4.
4. This process repeats for each successive stimulus point.
This setup could be used if you need to measure two parameters , then switch inputs using
external hardware (before measuring the second two parameters).
Note
If you are in External Trigger mode , and you turn all ve softkeys OFF , the
receiver will never wait for any triggers . Instead, it would \free run" as if it
were in the Internal Trigger mode . However, the HP 85370A P osition Encoder
would not work properly in this case . The Encoder requires that you select
the actual Internal Trigger mode (
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
TRIG SRC INTERNAL ) or it will not operate
properly .
6-26 Stimulus Functions