5790B
Operators Manual
1-4
Symbols
The symbols shown in Table 1-1 can be found in this manual or on the Product.
Table 1-1. Symbols
Symbol Definition Symbol Definition
WARNING.RISK OF DANGER.
WARNING. HAZARDOUS VOLTAGE.
Risk of electric shock.
Consult user documentation.
Conforms to European Union
directives
Certified by CSA Group to North
American safety standards.
Conforms to relevant Australian EMC
standards
Fuse
Conforms to relevant South Korean
EMC Standards.
This product complies with the
WEEE Directive marking
requirements. The affixed label
indicates that you must not discard
this electrical/electronic product in
domestic household waste. Product
Category: With reference to the
equipment types in the WEEE
Directive Annex I, this product is
classed as category 9 "Monitoring
and Control Instrumentation"
product. Do not dispose of this
product as unsorted municipal waste.
Measurement Category II is
applicable to test and measuring
circuits connected directly to
utilization points (socket outlets and
similar points) of the low-voltage
MAINS installation.
Measurement and Transfer Modes
With the Product you can measure an ac or dc voltage just as you would with a
voltmeter (measurement mode), or you can connect an external dc standard for
comparison to an applied ac voltage as you would do with an ac-dc transfer
standard (transfer mode). When in measurement mode, among many other
things, the Product automatically:
1. Compares the heating effect of the incoming signal to that of the Product
internal dc source, through the Fluke rms sensor. This method results in
direct detection of true rms value.
2. Adjusts the internal dc source for a null at the output of the rms sensor, in the
process eliminating many sources of error.
3. Applies correction factors saved at the time of calibration.
4. Presents the results of the ac-dc transfer on the display. The display shows
rms amplitude and frequency of the signal being applied, accurate to within
the uncertainty of the internal dc standard combined with the transfer
uncertainty. (See the Specifications.)
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