East Tester ET4501 User Manual page 5

ET4501/4502/4510 台式 LCR 数字电桥操作手册
1.2 Power connection
(1) Power supply voltage range: 220V AC ± 10%, or 110V AC ± 10%.
(2) Power supply frequency range: 45-65Hz.
(3) Phase line L, zero line N, and ground line E of power input shall be the same as those of the
power plug of this instrument.
(4) The instrument has been carefully designed to reduce the clutter interference caused by the
input at the AC power supply terminal. However, it shall be used in a low noise environment. If
such is not the case, please install the power supply filter.
WARNING: In order to prevent leakage from causing damage to the instrument or person, the user
must ensure that the ground line of the power supply is reliably connected to the earth.
1.3 Fuses
The instrument has been provided with fuses in delivery; the user shall use the fuses provided by
the company.
1.4 Ambient Environment
(1) Please do not use it in the place subject to dust, vibration, direct sunlight and corrosive
gas.
(2) The normal working temperature of this instrument is 0 ℃ ~ 40 ℃, and working humidity
is from 15% to 85%; Therefore please use the instrument in this condition as far as possible to
ensure the measurement accuracy.
(3) The instrument has been carefully designed to reduce the clutter interference caused by
the input at the AC power supply terminal. If such is not the case, please install the power supply
filter.
(4) If the instrument is not to be used for a long time, please put it in the original box or
similar box and store it in the ventilated room with temperature of 0 ℃ ~ 40 ℃ and relative
humidity of not more than 85% RH; The air in the room shall not contain harmful impurities
corrosive to measuring instrument, and direct sunlight shall be avoided.
(5) The instrument, especially the test leads connected to the DUT, shall be kept away from
the strong electromagnetic field to avoid interference to the measurement.
1.5 Test Fixture Used
Please use the test fixture or test cable provided by our company; the test fixture or test cable
made by the user or other companies may lead to incorrect measurement results. The test fixture or
test of the instrument cable shall be kept clean and the pins of the tested device shall be kept clean
to ensure that the device under test is in good contact with the fixture.
The test fixture or test cable shall be connected to such four test terminals as Hforce, Hsense,
Lsense and Lforce on the Front Panel of the instrument. For the device under test with a shielded
enclosure, the shielding layer can be connected to the ground line of the instrument.
NOTE: When there is no Installation of test fixture or test cable, the instrument will display
an unstable measurement result.
1.6
Warm-up and Continuous Working Hours
(1) In order to ensure accurate measurement of the instrument, the warm-up time shall be no less
than 30 minutes after the instrument is turned on; the continuous working hours shall be less than
16 hours.
杭州中创电子有限公司 2