HP 8530A, Руководство по эксплуатации и программированию, Страница: 416 / 439

Glossary
When the measurement starts , the receiver starts measuring 5 complete sweeps of
parameter 1. When it nishes , it starts taking 5 complete sweeps of parameter 2. This
continues until all four parameters have been measured.
Ramp mode is most often used with internal (free run) triggering. And is almost always
used in the Frequency or Time Domains .
Measurement Denition when Using Single P oint Mode
In Single P oint mode , a measurement is nished when the current frequency point has been
measured. If you want to measure more than one parameter , the receiver measures that
frequency point for each parameter . This mode is used in the Frequency or Time Domains .
Continual sweep and Free Run (internal) triggering are usually used with Single P oint mode .
Measurement Denition when Using Step or Frequency List Mode
In Step and Frequency List modes , a measurement is nished when all points between the
start and stop frequencies have been measured.
External Triggering:
External Pulse or HP-IB triggering can be modied to suit your needs . By default triggering
works as follows:
If you are displaying a single parameter , each external trigger will measure the A UT at
one frequency point, then advance to the next frequency and wait for another trigger .
If you are displaying four parameters , each trigger will measure all four parameters at
one frequency point, then advance to the next frequency and wait for another trigger .
The Trigger Mode feature of the HP 8530A (under STIMULUS 4 MENU 5
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TRIGGER MODE )
provides more exibility . Y ou can make the receiver wait for a trigger before measuring
any specic parameter . Y ou could measure one parameter per trigger , measure two
parameters per trigger , or any combination. The only limitation is that you must measure
the parameters in numeric sequence (1, 2, 3, 4). Y ou can also make the receiver wait for a
trigger before advancing to the next stimulus point. This is helpful if you are using a RF
source that is not compatible with the HP 8530A, if using unusual RF multipliers , and so on.
Internal Triggering:
If a single parameter is displayed, the receiver measures one frequency point, advances to
the next frequency point, and measures it. This continues automatically until the whole
frequency range is measured.
If you are displaying four parameters , each trigger will measure all four parameters at one
frequency point, then advance to the next frequency and measure all four parameters
again. This continues automatically until the whole frequency range is measured.
Measurement Denition when Using Single Angle Mode
In Single Angle mode , a measurement is nished when the current angle has been
measured. Continual measurement mode and Free Run triggering is recommended when
using Single Angle mode .
Measurement Denition when Using Swept Angle Mode
In Swept Angle mode , a measurement is nished when all points between the start and
stop angles have been measured. External or HP-IB triggering are almost always used with
Swept Angle mode .
External Triggering:
External TTL or HP-IB triggering can be modied to suit your needs . By default triggering
works as follows:
Glossary-5