External Power - Larson Davis SoundAdvisor 831C Reference Manual

Charge Status LED

3.5.2 External Power

USB Port Power
If the SoundAdvisor
CAUTION
is operated without batteries
installed and power is inter-
rupted, data may be lost.
Low Voltage Shutdown
Power Loss
To learn more
LEARN MORE
about power loss, see "Low
Power At Boot-Up" on page A-
4.
SoundAdvisor Model 831C
Step 2 Select battery type as NiMH.
Step 3 Charge will automatically set to On. If you do not want
your power source to charge your battery, set to Off.
Step 4 Select Save. A dialogue box will appear, select Yes.
The charge status indicated by an LED on 0 are as follows:
LED 0 continuously lit: Charging
•
LED 0 not lit: Not charging
•
LED 0 winking: Charging stopped (battery fault)
•
LED 0 fast blinking: meter is powering up or shutting down
•
The SoundAdvisor can be powered from a variety of sources including:
• USB port from a computer
• USB port from PSA029 power supply
• I/O port from PSA027 power supply (using CBL140 or CBL154)
• From an external +10.8 to +30 Volt mains power source
The SoundAdvisor can be powered via the USB port with the PSA029
external power supply. The mini USB Type B connector is located on
the bottom of the meter.
With the PSA029 power supply connected and operating at rated
conditions, the SoundAdvisor will operate properly with or without
batteries installed.
The SoundAdvisor has a special feature to preserve the service life of an
external battery by preventing it from being discharged excessively.
When the battery voltage drops below the External Shutoff Voltage
(default value +10.8 volts), but remains above +10.2 volts for one
minute, the instrument will stop, save data and turn the SoundAdvisor
off.
When the SoundAdvisor is powered from an external supply and the
input voltage falls below the indicated External Shutoff Voltage
threshold, it will power off. When the SoundAdvisor turns off due to a
low battery, it will automatically turn on 6 hours later and remain on if
there is adequate power. If the battery is still discharged, the
SoundAdvisor will turn back off and try again in another 6 hours. This
feature is designed to allow the SoundAdvisor to automatically restart
Power the SoundAdvisor 3-7