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ET35 Series Digital Bridges（LCR）Operating Instructions
I. Installation
This chapter describes the checks you should do after receiving the instrument and
the condition you should know and have before the installation.
1.1 Unpacking and checking
Thank you for purchasing and using our products; before you use the instrument,
please confirm in accordance with the last chapter "warranty" in the instructions.
Please contact us if there is discrepancy so as to safeguard your interest.
1.2 Power connection
(1) Voltage range of power supply:
.
220V.AC±10%,OR 110V.AC（optional）
(2) Frequency range of power supply: 50Hz ~ 60Hz.
(3) Power range: less than 20w.
(4) The input phase line L, the null line N, ground wire E of the instrument should be
the same as the power plugs.
(5) Although the instrument has been carefully designed to reduce the noise jamming
caused by AC power supply input, please use it in low-noise environments; if it cannot
be avoided, install the power supply filter.
Warning: To prevent the electric leakage which will cause harm to the instrument
or human beings, the user must ensure the reliable connection between the ground
wire of the power supply and the earth.
1.3 Fuse
The instrument is equipped with fuse before leaving the factory, and the user should use
the fuse provided by the company.
1.4 Environment
(1) Do not use it where there is dust, vibration, direct sunlight, or corrosive gas.
(2) Normal working temperature for the instrument 0°C ~ 40°C, humidity 15-85%, so
please try to use the instrument in this condition in order to ensure the accuracy of
measurement.
Although the instrument has been carefully designed to reduce the noise jamming
(3)
caused by AC power supply input, please use it in low-noise environments; if it cannot
be avoided, install the power supply filter.
1
Hangzhou Zhongchuang Electron Co., Ltd.
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