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Chapter 1
Introduction and Specifications
Introduction
The 5790B AC Measurement Standard (the Product) is a systems instrument
that measures ac voltage with the uncertainty of a thermal transfer standard.
Product operation is controlled from the front panel or remotely over the serial,
USB, Ethernet, or IEEE-488 interface.
You can operate the Product in measurement mode or transfer mode. In
measurement mode, the Product operates as a digital ac or dc voltmeter with up
to 8 digits of resolution. Measurement mode uses an internal dc reference. In
transfer mode, you apply an external dc or ac reference source. The Product
automatically switches and calculates, and shows the resulting ac-dc or ac-ac
difference on the LCD Color VGA display (the display).
The Product covers a voltage range of 600 μV to 1000 V (60 mV minimum in
transfer mode), and a frequency range of 10 Hz to 1 MHz. A wideband voltage
option extends frequency range to 30 MHz (Option 5790B/3) or 50 MHz (Option
5790B/5 and 5790B/AF). The Product is also compatible with Fluke A40, A40A,
and A40B current shunts, enabling current measurements in both measurement
mode or transfer mode up to 100 A. Refer to the Specifications for details.
A variety of input connections allows you to use the one that best suits your
application. There are four sets of input terminals on the Product, two 50 Ω Type
"N" connectors and two sets of five-way binding posts. One 50 Ω Type "N" and
one set of binding posts is dedicated to the ac measurement and transfer modes.
ac or dc voltages can be applied to either input connection, allowing you to
perform automated ac-dc transfer measurements. The second Type "N" input
connection supports the optional wideband mode, and the AUX binding posts are
for Fluke A40 Series current shunts.
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