HP 8530A, Руководство по эксплуатации и программированию, Страница: 261 / 439

Disc Functions
Guide to Saving Data
This section explains two common applications for saving data.
First of all, a more in-depth description of the dierent le types will be helpful in this
discussion:
Instrument
States
These states contain front panel settings , including:
Instrument settings
Frequency list segments
Whether calibration was On or O
Whether the Delay table was On or O
Whether user display was on or o
The cal set in use (if any) for that state
Whether electrical delay was On or O
The instrument state does not keep track of calibration data, cal kit denitions ,
user delay table contents , or any settings that control external hardware .
Memory These store a display data trace . These stored traces can be viewed next
to current data. Memory trace data can be used as an addend, subtrahend,
multiplicand, or dividend of current data using trace math features .
Cal Sets A cal set contains all the error coecients for a calibration you have
performed.
Cal Kit Contains the mathematical models for the precision standards in a calibration
kit.
Note: In the following descriptions , data is described as being aected by various features
(averaging, calibration, and so on). Such user-selected features only aect the data when
turned On.
Raw Data Raw data is averaged, but no other processing is performed. This data is
stored in an internal memory array called the \Raw Data Array ." Raw data is
composed of complex data pairs (real,imaginary) for each stimulus point.
\Data" Data This is measurement data that has been processed by calibration, electrical
delay , the user-dened delay table , and time domain. \Data" data is stored in
an array in complex data pairs .
F ormatted
Data
This is measurement data that has been processed by trace math, smoothing,
and has been formatted according to any display settings . If you have selected
a Cartesian display format, formatted data is no longer a complex value , but is
scaler (magnitude only). If you have selected P olar format, formatted data is a
complex value .
Delay T able The delay table allows you to mathematically change each raw data point with
a complex (real,imaginary) multiplier of your own choosing. The result is saved
in the \Data" data array . The receiver multiplies each measurement data pair
with the corresponding number pair in your delay table .
User Display Contains user-dened graphic elements drawn on the display .
Hardware
State
These are mostly settings found under the 4
SYSTEM
5 or 4
LOCAL
5 keys . These
settings control HP-IB addresses , multiple source settings , and other
hardware-related settings . The hardware state also controls the default RF
source power .
Machine Dump Stores the following registers:
All eight Instrument States
15-10 Disc Drive Operation