2-4 Front Panel Keys Chapter 2 — Instrument Overview
2-4 PN: 10580-00175 Rev. N MS272xB + MS8911B 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 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 +45 ºC) for charging.
Fan Inlet and Exhaust Ports
Note the positions of the inlet port and exhaust ports.
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.
Caution
Keeping the fan inlet and exhaust ports clear of obstructions at all times is
important for proper ventilation and cooling of the instrument.
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