HP 8530A, Руководство по эксплуатации и программированию, Страница: 40 / 439

HP 8530A F eatures
How the HP 8530A Receiver Diers from Similar Products
The HP 8530A receiver is similar to the HP 8510C network analyzer . The main dierences are
these:
The HP 8530A can measure up to 5,000 points per second using a new 100,000-point data
buer .
The HP 8530A has a new domain called ANGLE DOMAIN. This is a new measurement type
that measures antenna performance with respect to angle. A ctual antenna patterns are
shown on the screen, and markers read out in angular values . Y ou can display results in
Cartesian format or show polar antenna patterns on the screen.
External triggering is very exible , allowing you to trigger on an external TTL signal, or
by HP-IB command. In addition, you can choose which parameters (input ratios) will be
measured on successive triggers . The HP 8530A has a data acquisition handshake line that
tells external hardware when the HP 8530A is ready for another trigger .
The HP 8530A can track increment triggers from the positioner controller , and take data at
exactly the right time .
The HP 8530A provides antenna (gain) and RCS calibration types .
The HP 8530A has (optional) time domain band pass mode , but not time domain low pass .
(The low pass mode requires that the measured device be able to pass signals down to DC.
This is not possible with antennas , so low pass mode is not appropriate .)
A calibration created for a specic parameter (4 P ARAM 1 5 for example) can be recalled for any
of the other parameter keys (4 P ARAM 2 5 , 4 P ARAM 3 5 , or 4 P ARAM 4 5 ). Refer to the calibration
chapter for details .
General Information 1-9