5520A
Operators Manual
3-6
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
10 13 1411 12
18 17 16192021 15
nn010f.eps
Figure 3-1. Front Panel View (cont)
Table 3-1. Front Panel Features (cont)
J
N
The NEW REF (New Reference) key is active during error mode operation, and establishes the
present output value as a new reference for meter error computation.
K
S
The SETUP (Setup Menu) key puts the 5520A in the setup mode, displaying the setup menu in
the Control Display. Setup options can be selected using the softkeys under the Control Display.
L
R
The RESET (Reset Calibrator) key aborts the current operating state of the 5520A and returns it
to the power-up default state, except when operating under remote control.
M
G
The CE (Clear Entry) key clears a partially completed keypad entry from the Control Display. If
there is a partially completed entry when CE is pressed, the output is unaffected.
N
L e W
The EDIT FIELD (Edit Output Display Field) key and associated left/right arrow keys provide
step adjustment of the output signals. If any of these keys are pressed or the knob is rotated, a
digit on the Output Display becomes highlighted and the output increments or decrements as the
knob is rotated. If a digit rolls past 0 or 9, the digit to its left or right is carried. An error display
appears on the Control Display, showing the difference between the original (reference) output
and the new output.
The L and W keys adjust the magnitude of changes by moving the highlighted digit. The
ekey allows you to move from voltage or current to frequency and back. In practice, for
voltage and current outputs, the knob and arrow keys are used to adjust output until the UUT
reads correctly. The error display then displays UUT deviation from the reference.
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