Ceyear 3943B, Руководство по эксплуатации

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3 Quick Start
3.1 Get Prepared
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Fig. 3.2 Hand Strap of 3943B
4) Electrostatic protection
Static electricity is extremely destructive to electronic components and equipment. Usually we take two
anti-static measures: conductive table mat and wrist strap; Conductive floor mat and ankle strap. Using
the above two anti-static measurements at the same time can provide good antistatic protection. If using
one of them, only the former can provide antistatic protection. In order to ensure the user safety, the
ground isolation resistance of anti-
static components must be 1MΩ at least.
Correctly take the following antistatic measures to techniques to reduce electrostatic damages:

Ensure that all instruments are properly grounded to prevent generation of static electricity.

Before connecting the coaxial cable to the instrument, the inner and outer conductors of the cable
shall be respectively in contact with the ground for a short time.

Operators must wear anti-static wrist straps or take other antistatic measures before touching the
joints, core or conducting any assembly.
Voltage range
The above anti-static measures shall not be adopted in situations where the voltage exceeds 500V.
3.1.2 Precautions before energization
Pay attention to the following when turning on the power of the instrument:
1) Power supply requirements
The 3943B monitoring receiver has two power supply modes, namely, battery or power adapter.
The 3943B monitoring receiver can be powered in two ways:
a) Power adapter
When using the AC power supply, the accompanying AC-DC adapter must be adopted. The adapter
input is 220V/50Hz AC. In order to prevent mutual interference of power supplies of various devices,
especially the receiver hardware damage caused by spike pulse interference of high-power equipment, it
is recommended to use the 220VAC stabilized power supply to power on the receiver.
Table 3.3 lists the requirements for external power supply during the normal operation of adapter
Table 3.3 Requirements of Operating Power Supply Parameters of Adapter of 3943B
Warning
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