7 Troubleshooting and after-sales services
7.1 Working principles
93
7 Troubleshooting and after-sales services
The section introduces how to find problems and ask for after-sales services. and state the monitoring
receiver error message.
If you encounter any problem when operating the 3943 monitoring receiver or want to buy relevant
components or accessories, we can provide you with complete after-sales services.
Generally, causes of problems are due to hardware, software or user maloperation. In case of any
problem, please contact us in time. If the monitoring receiver you have purchased is under warranty, we
will repair your instrument free of charge as promised in the warranty statement; if the warranty period is
exceeded, we will only charge the cost.
W ork i ng p ri nc i pl e s
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Troubleshooting and debugging
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E r r o r m e s s a g e s
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Method to Obtain After-sales Services
7.1 Working principles
In order to facilitate the user to understand the function of the 3943B monitoring receiver and better
solve the problems encountered in the operation process, this section introduces the basic working
principle of the monitoring receiver and the hardware block diagram.
Overall working principle and hardware function block diagram
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7.1.1 Overall working principle and hardware function block diagram
The 3943B monitoring receiver is controlled by an industrial control computer, the operating system is
Linux, and the design is based on a super outlier signal reception system. The design follows the
modularization option design concept, dividing the whole hardware and software into several modules
with relatively independent functions. The whole machine is composed of pre-selected frequency
module, local vibration module, acquisition and processing module, display module and other parts. The
block diagram of the whole machine is shown in Fig. 7.1.
