HI
n
1501 Manual
Page — 3
2.0
ABOUT THE HI-1501
Description
Microwave leakage (electromagnetic fields) is detected by
an array of eight hot carrier diodes housed in the large
end of the plastic probe. This antenna array has the
unique feature of being able to sum microwave electric
fields of any polarization in a plane perpendicular to the
axis of the probe. The antenna lobe (effective measuring
area) is also very broad, making the instrument easy to
use when measuring leakage around an oven door. The
spacer cone is designed to provide a 5 cm spacing from
the tip of the probe to the center of the array.
Each detection probe and meter amplifier is calibrated as
a unit and serves all three ranges: 2, 10, and 100
mW/cm
2
. Only the 2 and 10 mW/cm
2
ranges are
considered compliance ranges in terms of compliance
with the DHHS/CDRH standard for microwave survey
instruments contained in CFR 1030.10.
NOTE:
The HI-1501 must not be used without the spacer cone
in place. Using the instrument without the cone will
result in reading errors and may damage the unit.
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