Larson Davis System 824, Technical Reference Manual

Page: 98 / 673

4-2 824 Reference Manual 9/29/09
This screen displays three lines of
user information which may be
defined as name and address
settings. You can use the 824 Utility
Software to input this information.
This display also shows the serial
number of the instrument and the
firmware version and date. The
System 824 then loads the last
instrument definition (ID) selected.
Step 1
Turn on the System 824. To do this, press the
v
key (located on the left side of the key pad). By
pressing this key, the Larson Davis logo appears
while a number of tests are performed. The fol-
lowing screen then appears for a few seconds:
Power off prior to changing
microphone or preamplifier to avoid
possible damage of sensitive
electronics due to high voltage
spikes.
Step 2
Check the battery level. After the System 824 is
turned on, you can check the battery level. To do
this, press the
v
POWER key momentarily. The
following screen appears:
Step 3
Calibrate the instrument. To do this, press the
T
TOOLS key. The following menu appears:
Pressing the
v
POWER key for 1
second turns the power OFF.
This screen shows you the current
power source, battery level, and
external power voltage.