RIGOL DM858 Performance Verification
General Safety Summary
Please review the following safety precautions carefully before putting the instrument into operation so as to avoid any personal injury or damage to the instrument and any product connected to it. To prevent potential hazards, please follow the instructions specified in this manual to use the instrument properly.
- Use Proper Power Cord.
Only the exclusive power cord designed for the instrument and authorized for use within the local country could be used. - Ground the Instrument.
The instrument is grounded through the Protective Earth lead of the power cord. To avoid electric shock, it is essential to connect the earth terminal of the power cord to the Protective Earth terminal before connecting any inputs or outputs. - Observe All Terminal Ratings.
To avoid fire or shock hazard, observe all ratings and markers on the instrument and check your manual for more information about ratings before connecting the instrument. - Use Proper Overvoltage Protection.
Ensure that no overvoltage (such as that caused by a bolt of lightning) can reach the product. Otherwise, the operator might be exposed to the danger of an electric shock. - Do Not Operate Without Covers.
Do not operate the instrument with covers or panels removed. - Do Not Insert Objects Into the Air Outlet.
Do not insert anything into the holes of the fan to avoid damaging the instrument. - Use Proper Fuse.
Please use the specified fuses. - Avoid Circuit or Wire Exposure.
Do not touch exposed junctions and components when the unit is powered on. - Do Not Operate With Suspected Failures.
If you suspect damage occurs to the instrument, have it inspected by RIGOL authorized personnel before further operations. Any maintenance, adjustment or replacement especially to circuits or accessories must be performed by RIGOL authorized personnel. - Provide Adequate Ventilation.
Inadequate ventilation may cause an increase of temperature in the instrument, which would cause damage to the instrument. So please keep the instrument well ventilated and inspect the air outlet and the fan regularly. - Do Not Operate in Wet Conditions.
To avoid short circuit inside the instrument or electric shock, never operate the instrument in a humid environment. - Do Not Operate in an Explosive Atmosphere.
To avoid personal injuries or damage to the instrument, never operate the instrument in an explosive atmosphere. - Keep Instrument Surfaces Clean and Dry.
To avoid dust or moisture from affecting the performance of the instrument, keep the surfaces of the instrument clean and dry. - Prevent Electrostatic Impact.
Operate the instrument in an electrostatic discharge protective environment to avoid damage induced by static discharges. Always ground both the internal and external conductors of cables to release static before making connections. - Handle with Caution.
Please handle with care during transportation to avoid damage to keys, knobs, interfaces, and other parts on the panels.
WARNING
Equipment meeting Class A requirements may not offer adequate protection to broadcast services within residential environment.
Input Terminal Protection Limits
Protection Limits are defined for the input terminals:
Main Input (HI and LO) Terminals
The HI and LO input terminals are used for voltage, resistance, capacitance, continuity, frequency (period), and diode test measurements. The following two Protection Limits are defined for these terminals:
- HI to LO Protection Limit: 1000 VDC or 750 VAC, which is also the maximum voltage measurement. This limit can also be expressed as 1000 Vpk maximum.
- LO to Ground Protection Limit. The LO input terminal can safely “float” a maximum of 500 Vpk relative to the ground.The protection limit for HI terminal is a maximum of 1000 Vpk relative to the ground. Therefore, the sum of the “float” voltage and the measured voltage cannot exceed 1000 Vpk.
Sense (HI Sense and LO Sense) Terminal
HI Sense and LO Sense terminals are used only for four-wire resistance measurements. The following two Protection Limits are defined for these terminals:
- HI Sense to LO Sense Protection Limit. HI Sense to LO Sense Protection Limit: 200 Vpk.
- LO Sense to LO Protection Limit. LO Sense to LO Protection Limit: 2 Vpk.
Current Input (I) Terminal
The I and LO terminals are used for current measurements. The I terminal has a protection limit of 10 A(DM858)/3.15 A(DM858E) maximum current flowing through the terminal by the front-panel current input fuse.
CAUTION
The current input terminal will be at approximately the same voltage as the LO terminal unless the current input fuse is blown. To maintain protection, replace this fuse only with a fuse of the specified type and rating.
IEC Measurement Category II
To protect against the danger of electric shock, DM858/DM858E Digital Multimeter provides overvoltage protection for line-voltage mains connections meeting both of the following conditions:
- The HI and LO input terminals are connected to the mains under Measurement Category II conditions, defined below.
- The mains are limited to a maximum line voltage of 300 VAC.
WARNING
IEC Measurement Category II includes electrical devices connected to mains at an outlet on a branch circuit. Such devices include most small appliances, test equipment, and other devices that plug into a branch outlet or socket. DM858/DM858E may be used to make measurements with the HI and LO inputs connected to mains in such devices (up to 300 VAC), or to the branch outlet itself. However, DM858/DM858E may not be used with its HI and LO inputs connected to mains in permanently installed electrical devices such as the main circuit-breaker panel, sub-panel disconnect boxes, or permanently wired motors. Such devices and circuits are subject to overvoltages that may exceed the protection limits of the DM858/DM858E.
CAUTION
Voltages above 300 VAC may be measured only in circuits that are isolated from mains. However, transient overvoltages are also present on circuits that are isolated from mains. DM858/DM858E is designed to safely withstand occasional transient overvoltage up to 2500 Vpk. Do not use this equipment to measure circuits where transient overvoltage could exceed this level.
Safety Notices and Symbols
Safety Notices in this Manual:
WARNING
Indicates a potentially hazardous situation or practice which, if not avoided, will result in serious injury or death.
CAUTION
Indicates a potentially hazardous situation or practice which, if not avoided, could result in damage to the product or loss of important data.
Safety Notices on the Product:
• DANGER
It calls attention to an operation, if not correctly performed, could result in injury or hazard immediately.
• WARNING
It calls attention to an operation, if not correctly performed, could result in potential injury or hazard.
• CAUTION
It calls attention to an operation, if not correctly performed, could result in damage to the product or other devices connected to the product.
Document Overview
This manual is designed to guide you to properly test the performance specifications of RIGOL DM858 Series Digital Multimeter. For the operation methods mentioned in the test procedures, refer to User Guide of this product.
Publication Number
PVC11100-1110
Format Conventions in this Manual
1. Key
The front panel key is denoted by the menu key icon. For example,
indicates the “Trig” key.
2. Menu
The menu item is denoted by the format of “Menu Name (Bold) + Character Shading” in the manual. For example, Measure indicates the “Measure” menu item. You can click or tap Measure to access the “Measure” menu.
3. Operation Procedures
The next step of the operation is denoted by “>” in the manual. For example,Storage indicates first clicking or tapping Storage.
Content Conventions in this Manual
DM858 series digital multimeter includes DM858 and DM858E models. The table below shows the main differences between the two models. Their operation methods are the same. Unless otherwise specified, this manual takes DM858 as an example to illustrate the methods for the performance verification of DM858 series.
Overview
Performance verification test is used to verify the instrument’s measurement performance. You can select two levels of performance verification tests: quick test and routine test.
Quick Test
The quick test provides a simple verification method to achieve high confidence in the instrument’s ability to functionally operate and meet specifications. It contains only a few test points and can evaluate the accuracy drift of the instrument in normal use. It does not check for abnormal component failures.
To perform the quick test, execute only the test items with the a letter “Q” in
Performance Verification Test.
TIP
The quick test is not applicable to instruments with abnormalities in some functions. The instrument that fails to pass the quick test must be calibrated and repaired before it is put back into use.
Routine Test
The routine test is recommended when you first receive the instrument. The test results are compared with the “Error from Nominal One Year” items of the verification tables in Performance Verification Test. After that, you can repeat the test at every calibration interval. Calibration is recommended at every calibration interval.
TIP
The instrument that passes the test should be tested again when the test time interval expires. The instrument that fails to pass the test must be calibrated or repaired before it is put back into use.
Test Equipment
Documents / Resources
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RIGOL DM858 Performance Verification [pdf] Instruction Manual DM858 Performance Verification, DM858, Performance Verification, Verification |
