ETS-Lindgren HI-1501, User Manual

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HI n 1501 Manual Page — 17
6.0 MAKING THE MEASUREMENT
Introduction
This section outlines the steps that should be taken while
measurements are actually taken with the HI-1501.
1. Turn the oven on and proceed with the leakage
measurement.
2. Hold the probe by the red handle in one hand
and hold the meter in the other hand. Place the
tip of the spacer cone against the oven surface,
with the probe handle perpendicular to the
surface. While testing, hold the meter away
from the oven to minimize the possible RF
pickup directly from the oven to the meter case.
3. Move the probe slowly, about one inch per
second, keeping the cone tip in contact with the
oven and the probe handle straight.
4. The areas where leakage is likely to occur are
around the door seal, the window, and at
ventilation louvers or vents. A damaged or
improperly installed magnetron mounting gasket
may cause leakage in the control panel area of
the oven.
5. If the needle goes beyond the end of the scale
(2 mW/cm 2 ), turn the selector switch to the 10
mW scale. Turn the oven off, rezero the meter,
and repeat the measurement.
6. Once you have checked all around the door
edges, around and across the window, and at
any louvers or vents, move the “SLOW/FAST”