ETS-Lindgren HI-1710 Microwave Measurement System (Archived) - Manual (Page 6)

HI n 1710 Manual Page — 1
1.0 DESCRIPTION
Introduction
The HI-1710 Microwave Measurement System is
designed to operate from standard 50/60 Hz. 115 or
230 VAC power. The circuitry is powered by a regulated
supply with normal industrial transient protection devices.
The push button power switch located on the front panel
of the instrument turns the instrument on and off. The
instrument provides four different time response
characteristics which allows standard hand scan
measurements according to CDRH Performance Standard
for Microwave Ovens, CFR 1030.10 as well as the
potential for faster scanning similar to that of automated
scanning systems. The instrument is calibrated for
measurement in the 2450 MHz ISM band only. The
instrument is shielded with the necessary isolating and
attenuating devices to provide immunity to stray leakage
of microwave energy.
The diode detection array of eight hot carrier diodes is
housed in the large end of the plastic probe assembly.
This antenna array has the unique feature of being able to
sum microwave electric fields of any plane perpendicular
to the axis of the probe. The antenna lobe is also very
broad, making the instrument easy to use when
measuring leakage around an oven door. The cone
spacer is designed to provide 5 cm spacing (as required
by the CDRH performance standard) from the tip of the
probe cone to the center of the array. The shape of the
cone provides minimum perturbation of the electric field
impinging on the diode array. The probe is attached
permanently to the pre-amplifier assembly by a 9 foot
shielded cable. Each detection probe and amplifier
assembly is calibrated as a unit and can be used
interchangeable with any HI-1710 Readout. The digital
Archived 4/2/10