ETS-Lindgren HI-1710A Microwave Oven Survey Meter - Manual (Page 10)

10 Introduction www.ets-lindgren.com
 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 it 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 preamplifier assembly by a
9-ft shielded cable. Each detection probe and amplifier assembly is
calibrated as a unit and can be used interchangeably with any
HI-1710A readout. The digital indicator reads to two or three decimal
places from 0 to 9.999 mW/cm 2 . Temporary over exposure to
microwave fields up to 2000 mW/cm 2 will not cause probe burnout or
damage the instrument or the calibration.
 Either auto-range or four ranges with full-scale indications of 1, 2, 5,
and 10 mW/cm 2 can be selected from the front panel or with a remote
serial port command. Selecting the range determines the full-scale
setting of the bar graph display located below the digital readout for a
continuous analog indication of the measured leakage level.
 The audio alarm circuit can be set to any level up to 9.99 mW/cm 2 .
When the level of the microwave leakage exceeds the pre-selected
value the audio alarm will sound if the audio is enabled, alerting the
operator that the chosen level has been exceeded. For more
information about the alarm, see page 30.
Standard Configuration
 HI-1710A Microwave Measurement System
 HI-2623 Microwave Oven Probe
 Power cable