5520A
Operators Manual
3-4
POWER
I
O
0•
123
456
789
ENTER
M
k
m
VHz
FIELD
EDIT
/
+
F
OPR EARTH SCOPE EXGRD MENU
PREV
SHIFT
RESET
CE
SETUP
REF
NEW
TC
MEAS
°F
µ
n
p
W
dBm sec
°CA
MULT
x
DIV
÷
MODES
MORE
5520A
CALIBRATOR
STBY
HI
LO
TRIG
GUARD
TC
20A
NORMAL AUX
SCOPE
OUT
V, , ,
RTD
A, -SENSE,
AUX V
20V PK MAX
20V PK MAX
3 4 5 6 7 8 9
1 2
nn009f.eps
Figure 3-1. Front Panel View
Table 3-1. Front Panel Features
A
Output Display
The Output Display is a two-line backlit LCD that shows output amplitudes, frequency and
calibrator status. Output values (or potential output values if in standby) are displayed using up
to seven digits plus a polarity sign. Output frequencies (or potential output frequencies if the
5520A is in standby) are displayed using four digits. Calibrator status is indicated by displaying
the following abbreviations:
OPR Displayed when an output is active at the front panel terminals.
STBY Displayed when the 5520A is in standby.
ADDR Displayed when the 5520A is addressed over the IEEE-488 interface.
u
When you change the output, a “u” (unsettled) is displayed until the output settles
to within the specified accuracy.
m
Displayed when the calibrator is making a measurement. (Thermocouple,
pressure, and impedance measurement features only.)
?
Displayed when the amplitude is specified as typical only, and/or reduced
resolution. This occurs when operating the 5520A in the extended bandwidth
mode.
C
Displayed when unstored calibration constants are in use.
B
Control Display
The Control Display is a multipurpose backlit LCD used for displaying data entries, UUT error
adjustments, softkey labels, phase angles, watts, power factors, and other prompts and
messages. When there isn’t enough room on the Output Display, output frequency is displayed
on the Control Display. Softkey labels identify the function of the softkey directly below them.
Several softkey labels together are called a menu. The changing menus provide access to many
different functions through the five softkeys plus the PREV MENU key. (See Figure 3-3, Softkey
Menu Tree.)
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