Larson Davis SoundTrack LxT, Руководство пользователя

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3-6
Powering the SoundTrack LxTâ LxT Manual
Hardware Power Switch
DO NOT use the hardware power
switch to turn the LxT OFF. This may
cause data to be lost. Press the
0
key, then the Off soft key to turn the
LxT off.
The Hardware Power Switch on the bottom of the LxT,
shown in Figure 2-2 disconnects the batteries from the LxT
hardware, including the real time clock. This prevents
battery drain when the LxT is not in use for an extended
period of time (
>
2 weeks)

If the Hardware Power Switch is
in the “O” position, the batteries are disconnected.
It is recommended that the batteries
be removed from the instrument if it
will not be used for a month or
longer as the batteries may self-
discharge and leak, damaging the
instrument. After installing batteries be sure to move the switch to the "|"
position. This applies power to all of the LxT hardware.
The Hardware Power Switch should not be used to turn the
LxT on and off. If the Hardware Power Switch is used to
turn the LxT off, data may be lost and Flash corruption may
result.
USB Power
The LxT can be powered from batteries or, if available, from
the USB host portion of your computer.
The LxT cannot be operated under
USB power if the internal batteries
are discharged (flat). You can run
solely on USB power if you remove
the depleted batteries. However, if
operated on external power only,
with no batteries installed, an
interruption of power to the LxT, for
any reason, may result in instrument
malfunction. The LxT must run on batteries until allowed by the host to
run on USB or external power. If the batteries cannot
provide sufficient power, the LxT does not power on, even
with USB external power. If batteries are installed in the
LxT, ensure that they are good so that the LxT can power on.
If the LxT has discharged batteries installed, the batteries
should be removed or replaced with fresh batteries in order
for the LxT to be USB powered.
To avoid memory corruption when using USB Power or
flash drives, follow these precautions:
• Always shut down the LxT completely before
unplugging USB power connections.
• Do not unplug USB drives from the USB port on the
LxT while the drive is being copied, or if the LxT is
within Data Explorer mode.
External Power Supply PSA029
In addition to running on batteries, or USB power, the LxT
can be powered from a PSA029 power supply. When