Rigol DM3068, Руководство по обслуживанию

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RIGOL Chapter 5 Troubleshooting & Maintenance
Service Guide for DM3068
5-4
5.2 Maintenance and Cleaning
5.2.1 System Maintenance
In order to ensure the running performance of instrument and extend its service time,
you must:
1
．
Become fully knowledgeable about the meter performance before using it.
2
．
Do always use and store the meter against dust, shock, humid, magnet and
static as well as do not expose it in the sun for a long time as such situation will
detract from measurement precision and service life.
3
．
Do not drive your meter with faults. If a function failure occurs during the
operation, please correct the error before continuing on. In addition, test and
calibrate the meter within the prescribed time limit to ensure the credibility of
the measurement.
4
．
Put all things away after each use.
5
．
Keep the accessories for next using.
5.2.2 Principles of Circuit
The DM3068 used a circuit containing a floating, grounding and power circuit.
1. The floating circuit includes the current fuse, signal input end on the front panel
(banana socket), measurement analog front-end and the main voltage
stabilizing circuits. The measurement analog front-end contains all
measurement function circuits such as input protection, function switching,
signal transform conditioning, A/D conversion and control interfaces.
The following functional block diagram shows the DM3068 circuit principles.
Each box represents an alternative circuit component .