3-4
DATA ENTRY AREA
The value of a selected 681XXA parameter can be changed using the
rotary data knob and/or keys of the data entry area. Each element of
the data entry area is identified in Figure 3-3 and described in the fol-
lowing paragraphs.
Cursor Control Key
In general, this diamond-shaped key controls the
movement of the cursor on the display. When a pa-
rameter is opened for editing, a cursor appears un-
der the open parameter. Each time the < or > pad is
pressed, the cursor moves left or right by one digit.
The
∧
or
∨
pad can then be used to increase or de-
crease the value of the parameter. The unit size of
the increase or decrease that occurs each time the
∧
or
∨
pad is pressed is determined by the cursor posi-
tion.
In addition, when editing frequency, power level,
and time parameters, the incremental size can be
set to a specific value using a system configuration
sub-menu. Once set and activated, each time the
∧
or
∨
pad is pressed, the parameter’s value increases
or decreases by the set amount.
LOCAL (FRONT
DATA ENTRY
PANEL) OPERATION
AREA
2
3
1
6
5
4
9
8
7
0
dBm
Sec
GHz
dB
ms
MHz
kHz
s
µ
STEPS
ADRS
ns
Hz
CLEAR
ENTRY
BACK
SPACE
Rotary
Data
Knob
Clear
Entry
Key
Back
Space
Key
Cursor
Control
Key
Keypad
Terminator
Keys
Figure 3-3.
Front Panel Data Entry Area
3-10
681XXA OM
