Fluke 5500A - Page 65

Features
Softkey Menu Trees
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3-5
3
Y
The STBY (Standby) key places the 5500A in the standby mode. Standby mode is indicated by
“STBY” in the lower left corner of the output display. In standby mode, the NORMAL and AUX
output terminals are internally disconnected from the 5500A. The 5500A normally starts up in the
standby mode. The 5500A automatically switches to standby if one of the following occurs:
The RESET key is pressed.
A voltage ≥ 33 V is selected when the previous output voltage was less than 33 V.
Output function is changed, except when going between ac or dc voltage <33 V.
Output location is changed.
An overload condition is detected.
4
O
The OPR (Operate) key places the 5500A in the operate mode. The operate mode is indicated by
“OPR” in the lower left corner of the output display and the lit indicator on the OPR key.
5
Z
The EARTH (Earth Ground) key opens and closes an internal connection between the NORMAL
LO terminal and earth ground. An annunciator on the key indicates when this connection is made.
The power-up default condition is earth disabled (annunciator off).
6
a
The SCOPE (Oscilloscope) key enables or disables the ScopeCal option if it is present. An
annunciator on the key indicates when the option is enabled. If the ScopeCal option is not
installed in the calibrator and the Scope key is pressed, the calibrator will beep with no change in
the calibrator’s status.
7
B
The BOOST (5725A Amplifier Boost) key enables or disables output from an amplifier, when it
would not otherwise be automatically selected. The BOOST key sets the 5500A to standby if this
selection moves the output location. An annunciator on the key indicates when the 5725A is being
used.
When available, an amplifier is automatically selected for output settings that exceed 5500A
capabilities but fall within the limits of the selected amplifier. The BOOST key is only needed to
activate an amplifier for an output setting that is available from either the 5500A or the amplifier.
This allows you to take advantage of amplifier capabilities in addition to extended range, such as
higher compliance voltage.
8
P
The PREV MENU (Previous Menu) key recalls the previous set of menu choices. Each press of
this key backs up one level of the menu tree until the display indicates the top level menu
selection of the function selected.
9
Softkeys
The functions of the five unlabeled blue softkeys are identified by labels on the Control Display
directly above each key. The functions change during operation so that many different functions
are accessible through these keys. A group of softkey labels is called a menu. A group of
interconnected menus is called a menu tree.