Fluke 5820A, Руководство оператора

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5820A
Operators Manual
3-10
Table 3-2. Rear Panel Features (cont.)
D
The
SERIAL 1 FROM HOST
connector is for remote control of the 5820A and for transmitting
internal-constant RS-232 serial data to a monitor or host computer. Chapter 5 describes how to
use the RS-232 serial interface for remote control.
E
The
External Reference
connector is for applying an optional external clock signal to the
5820A. This replaces the normal internal 10 MHz clock signal in the 5820A. Frequency
accuracy of the 5820A is governed by the frequency accuracy of the clock signal internal or
external.
F
The
IEEE-488
connector is a standard parallel interface for operating the 5820A in remote
control as a Talker/Listener on the IEEE-488 bus. Refer to Chapter 5 for bus connection and
remote programming instructions.
G
XW
Warning
To avoid shock hazard, connect the factory supplied
three-conductor line power cord to a properly grounded
power outlet. Do not use a two-conductor adapter or
extension cord; this will break the protective ground
connection.
Use the rear-panel ground terminal for a protective
grounding wire if there is any question as to instrument
earth grounding.
The
CHASSIS GROUND
binding post is internally grounded to the chassis. If the 5820A is the
location of the ground reference point in a system, this binding post can be used for connecting
other instruments to earth ground. Refer to “Connecting the Calibrator to a UUT” in Chapter 4
for details.
H
The
AC Power Input Module
provides a grounded three-prong connector that accepts the line
power cord, a switch mechanism to select the operating line voltage, and a line power fuse. See
Chapter 2 for information on selecting the operating line voltage, and fuse rating and
replacement information.
3-4. Setup Softkey Menu Trees
Figures 3-3 and 3-4 identify the Setup softkeys. The Setup softkeys are associated with
the 5820A Calibrator front panel
p
key. The functions of the five softkeys are
identified by label information displayed directly above each key. The softkey labels
change during operation so that many different functions are quickly accessible.
A group of softkey labels is called a menu. A group of interconnected menus is called a
menu tree. Figure 3-3 shows the SETUP menu tree structure; Figure 3-4 describes each
SETUP menu tree display. Table 3-3 shows the factory default settings for the SETUP
menu tree. To return the SETUP menus to their default values, use the softkey SETUP in
the Format NV Memory menu (see Figure 3-4, menu F).