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Optional Capabilities
Manual antenna measurements
The 85301B/C antenna measurement systems can
be operated in a manual mode. Manual operation
allows the operator to rotate the antenna under
test, and measure, analyze, print and archive the
pattern manually. As the antenna under test is
rotated, the antenna pattern is displayed on the
color display of the microwave receiver. Up to five
interactive markers can be placed on the pattern,
indicating angular position and amplitude (or
phase) value. For a hard copy of the antenna pat-
tern, the receiver can print the pattern to a variety
of HP printers. For archive purposes, antenna pat-
terns can be stored by the receiver via a built-in
3.5" disk drive in either DOS or LIF format.
The 85370A antenna position encoder allows man-
ual antenna patterns to be measured easily using
the 8530A microwave receiver and any antenna
position system. The antenna positioner encoder
provides positioner information to the 8530A
microwave receiver. The encoder monitors the syn-
chro lines from the antenna positioner, decodes
the synchro signals and sends the positioning
information to the receiver through an encoder
interface cable. When the positioner is manually
moved through the desired angles, the receiver
measures and displays the antenna pattern on the
screen display of the receiver. Antenna pattern
parameters such as start and stop angles, as well
8530A
Microwave Receiver
8530A
Option 005
Encoder Interface
Synchro Display
Positioner Control Unit
Figure 14. Antenna position encoder interconnect diagram
Encoder Interface Cable
Synchro Interface Cable
Either Option 001 or 002
Control Lines
as angular sampling increment, can be selected
from the front panel of the microwave receiver.
Synchro encoder operation is not compatible
with pulsed operation.
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If manual operation capability is desired,
select the 85370A antenna position encoder in
Figure 18. Also select the proper cabling option
depending upon the type of antenna positioning
system. Option 001 is for interfacing to Scientific-
Atlanta position indicator model numbers SA1842,
SA1843, SA1844 and SA4400. Option 002 is for
interfacing to Flam & Russell 8502 and Orbit AL-
4706-3A positioner controllers. For interfacing to
other positioning systems, consult your Agilent
Technologies sales representative.
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To interface the 85370A antenna position
encoder to the 8530A microwave receiver requires
Option 005 (encoder interface) for the 8530A. For
existing 8530A receivers without this option, an
upgrade kit is available; consult your Agilent
Technologies sales representative for more infor-
mation.
Synchro Cable
(Existing)
85370A
Antenna Position Encoder
Antenna
Under Test
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