HP 8530A, Руководство по эксплуатации и программированию, Страница: 129 / 439

Creating a Standard Gain Antenna Cal Denition
Creating a Standard Gain Antenna Denition
Introduction
If you use dierent standard gain antennas than those already dened, you must create a \cal
denition." T o do this , you must:
Create an ASCII text le on a computer .
Save the le to disc
Load the le into the HP 8530A.
This section explains how to create your own denitions .
Important T erms
Cal Denition A cal denition is an ASCII le you create using a text editor .
It contains theoretical or measured frequency and gain values
for one or more standard gain antennas . Y ou can create the
le using any computer-based text editor which can save text
in plain ASCII format (which can save the le to an MS DOS
R
or HP LIF disc). The le can then be loaded into the receiver
from the disc . The cal denition le can contain up to seven
\antenna denitions ."
Antenna Denition The gain data for a specic standard gain antenna is called an
\antenna denition." As mentioned above , a cal denition
contains up to seven antenna denitions .
The Supplied Cal Denition
The HP 8530A is not shipped with a cal denition in memory . However , a pre-dened cal
denition (AC_NAR1 ) is supplied on the Antenna RCS/Cal Disc , which was shipped with the
receiver . Y ou can load AC_NAR1 , or a cal denition you create , by following the instructions in
\Loading the Cal Denition into the HP 8530A ". Details on AC_NAR1 are provided at the end of
this section.
Required Hardware
A cal denition is a simple ASCII text le . Y ou can create a cal denition using:
Any computer that can save ASCII les to MS-DOS compatible discs .
Any computer that can save ASCII les to discs formatted in Hewlett-P ackard Logical
Interchange F ormat (LIF).
Y ou MUST use a text editor that can save plain ASCII les!
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