Anritsu 680XXC, Operation Manual, Page: 46 / 241

Rotary Data Knob
The rotary data knob can be used to change the
value of a parameter that is open for editing. The
cursor is moved under the open parameter using the
< and > pads of the cursor control key. Then, by
slowly turning the knob clockwise or counter-
clockwise the value of the parameter is increased or
decreased by the unit size. The unit size is deter-
mined by the cursor placement. Turning the knob
rapidly changes the value of the parameter in larger
steps.
When editing frequency, power level, and time pa-
rameters, the incremental size can be set to a spe-
cific value using the system configuration increment
menu (paragraph 3-13). Once set and activated,
each time the knob is turned clockwise or counter-
clockwise, the param-eter’s value increases or de-
creases by the set amount.
KEYPAD
The numeric keypad provides for entering fre-
quency, power level, time, and number-of-steps pa-
rameters and GPIB address values. The “–” key
functions as a “change sign” key during any keypad
entry.
CLEAR ENTRY Key
When a parameter is open for editing, the
CLEAR
ENTRY
key is used to clear the parameter entry.
BACK SPACE Key
The
BACK SPACE key is used to correct keypad
data entry errors by deleting the last number, “–”, or
decimal point entered.
Terminator Keys
The terminator keys are used to terminate keypad
data entries and change the parameter values in
memory. If the entered value is outside the allow-
able range of the open parameter, an error message
will be displayed along with an audible “beep”. The
terminator keys are as follows:
GHz / Sec / dBm
MHz / ms / dB
kHz /
m
s / STEPS
Hz / ns / ADRS
681XXC OM 3-13
LOCAL (FRONT DATA ENTRY
PANEL) OPERATION AREA
NOTE
When Linear power level units are
selected, use the following termina-
tor keys for power level data
entries.
GHz / Sec / dBm for V
MHz / ms / dB for mV
kHz /
m
s / STEPS for
m
V