Anritsu S251B - Manual (Page 21)

Keypad Controls
This section contains an alphabetical listing of the Site Master front panel keypad controls
along with a brief description of each. More detailed descriptions of the major function
keys follow.
Turns the liquid crystal display (LCD) back-lighting ON or OFF. (Leaving back
lighting off conserves battery power.)
LCD Contrast adjust. Use the Up/Down arrow key and ENTER to adjust the dis-
play contrast.
AMPLITUDE Displays the amplitude or scale menu of the current operating mode.
NOTE:
The AMPLITUDE and LIMIT keys are functionally identical.
AUTO
SCALE Automatically scales the display for optimum resolution.
ENTER Implements certain menu and key selections.
ESCAPE
CLEAR
Exits the present operation or clears the display. If a parameter is being edited,
pressing this key will clear the value currently being entered and restore the last
valid entry. Pressing this key again will close the parameter. During normal
sweeping, pressing this key will move up one menu level.
FREQ/DIST Displays the Frequency or Distance menu depending on the measurement mode.
LIMIT Displays the amplitude or scale menu of the current operating mode.
MARKER Displays the marker menu of the current operating mode.
MODE Opens the mode selection box (below). Use the Up/Down arrow key to select a
mode. Press the
ENTER key to implement.
3-3
Chapter 3 Functions and Operations
MEASUREMENT MODE
FREQ - SWR
RETURN LOSS
CABLE LOSS - ONE PORT
INSERTION LOSS (+6 dBm)
INSERTION LOSS (–30 dBm)
DTF - SWR
RETURN LOSS
POWER MONITOR
RF SOURCE
Figure 3-2. Mode Selection Box