8588A/8558A
Operators Manual
30
• Peak to peak method: This submenu is made active when the Secondary
Reading is set to Pk to Pk.
o Measured () shows the peak to peak as measured in ACI
assuming no particular signal wave form.
o (Sine)
o (Square)
o (Triangle)
o (Truncated Sine)
through specify the signal wave form type that is measured, and
calculates the peak to peak based on the rms value.
For example, if set to:
Sine, the peak to peak shown is 2 x (square root of 2) x rms
Square is 2 x rms
Triangle is 2 x (square root of 3) x rms
Truncated Sine is 4.618803 x rms
The Square, Triangle and Truncated Sine selections are useful to measure the
peak-to-peak output of multi-product calibrators like the Fluke 5522A which have
these non-sine wave outputs.
Measure AC Current
The Product measures ac current with its INPUT A and INPUT
LO terminals.
Similar connection considerations are required for ac current measurement as for
ac voltage measurement. Use shielded twisted pair cable to reduce induced
interference signals, and connect GUARD to the source of common mode
voltage with the screen, to provide a separate common mode current path. The
Product minimizes the burden (compliance) voltage generated for current
measurements and thus, improves measurement accuracy. Fluke Calibration
recommends that leads of the minimum-practical length be used to reduce lead
capacitance, lead inductance, and loop area.
When you make ac current measurements pay close attention to the lead
impedance, especially lead capacitance at high frequencies on the lower current
ranges. (See Measure AC Voltage)
XW Warning
HIGH CURRENT FLOW
To prevent possible electrical shock, fire, or personal injury, do
not exceed the Measurement Category (CAT) rating of the
lowest rated individual component of a Product, probe, or
accessory.
Only use probes, test leads, and accessories that have the
same measurement category, voltage, and amperage ratings as
the Product.
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