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3.8.2 If the instrument needs to be carried to outside so often, especially when
it’s probably to meet the raining day or walking into water, prepare a waterproof pel-
ican case.
3.8.3 When it may be necessary to measure an amplifier or transmitter, prepare
enough attenuators. When the tested signal is suspected to be over the instrument’s
limit, user must connect attenuators in series.
3.8.4 When testing in places where antennas maybe live, such as broadcast and
television tower. Use the terminal power meter to make sure that the coupled power
of the antenna under test is lower than 0.1W. When antennas are on the tower, some
may be transmitting. The emission RF power will do couple through the air. In this
situation, the instrument might break due to the antenna under test coupling lots of
RF power.
3.8.5 When testing antennas near the high voltage power line or a substation,
please check that the coupled voltage on the port which under test with ac voltmeter.
The induced peak voltage shouldn’t be over 15V. Also coaxial cable’s shielding layer
should be grounded nearby.
3.8.6 If user uses a probe to measure RF signal on circuit board, pay attention to
connect the external shielding layer of the cable with circuit board’s ground together.
Hanging-in- air is dangerous and it probably will break KC901V.
3.8.7 Instrument can measure passive components while it’s charging. But user
should avoid using it on active devices in the same situation. If user insists on doing so,
please connect the ground of KC901V (the external layer of the coaxial connector) to
the ground of the DUT in equipotential connection to prevent the damage which is
caused by the voltage difference between the instrument and DUT.
3.8.8 If user needs to test at height, prepare enough firm safety ropes and pack-
ing bags in order to avoid the accidental drop. Also set warning zone under the tower.
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