4957D/E/F Microwave Analyzer Quick Start Guide
2
Chapter II Getting Prepared
The 4957D/E/F microwave analyzers are exquisitely designed and comfortable to
operate. They are small in size, with the maximum external dimensions (width × height ×
depth) of only 315 mm × 220 mm × 102 mm (excluding handles, footpads and supports);
light, with the total weight of not more than 5.3 kg for each unit (excluding rechargeable li-
ion batteries). Therefore, they are easily carried for field tests. This chapter will focus on
the test environment, power supply, structure and battery replacement of the instrument.
2.1 Preparation before operation
This section introduces the precautions before first use of a 4957D/E/F microwave
analyzer. 4957D/E/F meets the safety requirements specified in GJB3947A-2009. Please
read the following safety instructions carefully so as not to cause damage to the
instrument or unnecessary personal injury.
To prevent the instrument from damages and to avoid electric
shock, fire and personal injury:
Do not open the cabinet without permission;
Do not try to disassemble or refit any part of the instrument not
mentioned in the manual. Otherwise, such consequences as
reduced electromagnetic shielding property and internal component
damage can occur, affecting product reliability. In this case, we will
not provide any free maintenance any more even if the product is
still in the warranty period.
2.1.1 Environmental Requirements
In order to ensure the service life of 4957D/E/F and the validity and accuracy of
measurement, please carry out the tests under the following environmental conditions:
1. Temperature range:
Storage temperature range: -40
℃
~ +70
℃
Working temperature range: -10
℃
~ +50
℃
2. Low air pressure:
Low air pressure (altitude): 0 ~ 4,600 m
2.1.2 Power Supply Requirements
4957D/E/F can be powered in three ways:
1. AC power supply and adapter
When adopting AC power supply, the enclosed AC-DC adapter must be used. With the
input of 220 V / 50 Hz AC, the adapter is connected with a standard three-core power
cord. Pay attention to ensure proper grounding.
Since the working temperature range of the battery equipped with
the instrument is-20
℃
~ 60
℃
, the instrument should not work
continuously for a long time when it is equipped with the battery at
high temperature, so as to avoid danger caused by too high internal
temperature. It is recommended to use an adapter for power
supply.
Warning
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！
Warning
！
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