An Overview Of The Features - Fluke 5790B Operator's Manual

Push the Set Reference softkey to set an incoming signal as a reference,
activating transfer mode. In transfer mode, the Product automatically does the
following:
1. Shows the reference source, the formula the Product is using to compute ac-
dc or ac-ac difference, and the results of the formula.
2. Shows the Average Reference softkey to easily correct for dc reversal error.
You apply both polarities of dc and the Product computes the average of the
absolute values of the applied dc.
3. Continuously shows the results of comparisons of the heating effect of the
incoming signal to that of the stored reference.
4. Applies correction factors saved at time of calibration as necessary.
5. Presents the results of the transfer on the display, accurate to within the
uncertainty of the transfer device. (See the Specifications.)
6. Always shows the measured amplitude and frequency of the input signal on
the display, no matter what other processes are taking place.

An Overview of the Features

See Chapter 3 for detailed descriptions of front panel connectors, controls, and
displays. Features of the Product include:
• Two main input choices: 50 Ω Type "N" coaxial or five-way binding posts.
•
Make relative or absolute current measurements with a Fluke A40B, A40A, or
A40 Current Shunt. See Instructions for Current Measurement.
•
A dedicated AUX input terminal that provides current transfer capability.
• WIDEBAND 50 Ω Type "N" coaxial connector for measuring signals up to
30 MHz (requires 5790B/3 Wideband Option) or 50 MHz (requires 5790B/5 or
5790B/AF Wideband Option). The WIDEBAND input presents a 50 Ω load to
the source. Signals accepted are from 700 μV to 7 V over a frequency range
of 10 Hz to 30 MHz (Option 5790B/3) or 50 MHz (Option 5790B/5 or
5790B/AF). Only the lower eight Product voltage ranges are used by the
WIDEBAND input.
•
Closed-case periodic calibration in which no physical adjustments are
necessary.
•
The ability to print or save calibration reports. For reporting purposes, the
Product maintains in nonvolatile memory a database of the calibration shifts
from the previous calibration as well as from the most recent calibration.
Calibration reports provide a way to develop a performance history of each
Product.
Introduction and Specifications
An Overview of the Features
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