Fluke 5520A - Page 63

Features
Softkey Menu Trees
3
3-5
C
Y
The STBY (Standby) key places the 5520A in standby mode. Standby mode is indicated by
“STBY” in the lower left corner of the Output Display. In standby mode, the NORMAL, AUX and
20A output terminals are internally disconnected from the 5520A. The 5520A starts up in
standby mode. The 5520A 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.
A current output above 3 A is selected. This is when the output location changes to the 20A
terminal.
An overload condition is detected.
D
O
The OPR (Operate) key places the 5520A in operate mode. Operate mode is indicated by “OPR”
in the lower left corner of the Output Display and the lit indicator on the OPR key.
E
Z
The EARTH (Earth Ground) key opens and closes an internal connection between the NORMAL
LO terminal and earth ground. An indicator on the key indicates when this connection is made.
The power-up default condition is earth disabled (indicator off).
F
a
The SCOPE (Oscilloscope) key activates or deactivates an oscilloscope calibration option if it is
installed. An indicator on the key indicates when the option is activated. If an oscilloscope
calibration option is not installed in the calibrator and the SCOPE key is pressed, the calibrator
displays an error message.
G
B
The EXGRD (External Guard) key opens and closes an internal connection between the internal
NORMAL LO signal ground and the internal guard shield. An indicator on the key indicates when
this connection is made. The power-up default condition is external guard disabled (indicator
off).
H
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.
I
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.