Anritsu BTS Master MT8222A, User Manual, Page: 27 / 115

2-4 Front Panel Keys Instrument Overview
2-4 PN: 10580-00156 Rev. T BTS Master UG
Other features on the front panel include:
Battery Charge LED (Green)
The Battery Charge LED flashes if the battery is charging, and remains on steady when the
battery is fully charged.
Charge Fault LED (Red)
The Charge Fault LED remains on steady under a battery charger fault condition. Fault
conditions include a battery cell voltage that is too low to charge or a battery temperature
that is outside the temperature range (
–
5 ºC to +50 ºC) for charging.
Fan Inlet and Exhaust Ports
Keeping the fan inlet and exhaust ports clear of obstructions at all times is important for
proper ventilation and cooling of the instrument.
2-4 Front Panel Keys
The term hard key refers to all of the buttons on the instrument face except for the vertical
row of 8 gray buttons adjacent to the right edge of the measurement display screen (the
8 submenu keys) and the horizontal row of 5 gray buttons below the measurement display
screen (the 5 main menu keys).
The hard keys perform as follows:
Esc Key
Press this key to cancel any setting that is currently being made.
Enter Key
Press this key to finalize data input. Pressing the rotary knob performs this same function.
Arrow Keys
The four arrow keys (between the rotary knob and the
Esc
key) are used to scroll up, down,
left, or right. The arrow keys can often be used (depending upon measurement selection) to
change a value or to change a selection from a list. This function is similar to the function of
the rotary knob. In some measurements, the
Left/Right
arrow keys change values by different
increments than the
Up/Down
arrow keys or the rotary knob. The arrow keys are also used to
move markers.
Shift Key
Press the
Shift
key and then press a number key to open the menu that is indicated in blue
text above the number key. When the
Shift
key is active, its icon is displayed at the top-right
of the measurement display area between the battery charge indicator and the submenu
label.
The
Shift
key is also used for UPPERCASE letters when entering text (refer to “Text Entry”
on page 2-11 .
Figure 2-3. Shift Key Icon