Larson Davis SoundAdvisor 831C Reference Manual page 87

9.4.3 Using Analog Power-Save Mode
9.4.4 Setting the Backlights On Period
9.4.5 Enabling or Disabling the Keypad Backlight
SoundAdvisor Model 831C
Pressing the
state it was in when the Auto-Off time expired.
On your 831C, go to Tools
//*
softkey (
Power-Save mode is indicated by the sleep icon
running, this mode can significantly conserve battery power, since it shuts
down the meter's analog circuitry and signal processing activities.
From the Power-Save drop-down menu, select the period the instrument
should stay powered after a measurement has stopped.
The analog circuitry, including power to the preamplifier, shuts down when
the instrument is stopped for the period you chose. Performing a calibration,
a reset, or starting a measurement restores power. The meter can run the
measurement after a short 10 second power-up.
On your 831C, go to Tools
//*
softkey (
Backlights On is the duration the 831C display is back lit after the last key
press. Selecting Always slightly increases power consumption.
On your 831C, go to Tools
//*
softkey (
The blue LEDs under the keypad can be enabled or disabled according to your
preference. The Red LED behind the STOP/STORE button, and the green LEDs
under the RUN/PAUSE and ON/OFF buttons are always enabled.
Increasing the back light brightness significantly increases the meter's power
TAKE NOTE
consumption, which decreases battery life.
Additionally, you can select the LCD screen back light intensity as a
percentage.
When battery life is below 10%, the 831C overrides this setting and
downgrades the LCD Brightness to 50%. If the user-defined setting is below
50% brightness, it remains the same.
Editing Power Settings
0
(ON / OFF) key returns the instrument and the display to the
 System Properties, then press the top-right
) until the Power tab displays.

System Properties, then press the top-right
) until the Power tab displays.
 System Properties, then press the top-right
) until the Power tab displays.
. When the meter is not
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