SV 104A USER'S MANUAL_______________________________________________________
31
4.2
Before you turn the instrument on
There are only a few things to remember:
•
Make sure the microphone is properly fastened onto mounting head before turning on the
instrument.
•
When in use for a measurement run, always use the
SA 122A
windshield provided.
4.3
Turning on/off
TURNING ON:
To switch the power on the operator should hold the
<ENTER>
key for a couple
of seconds. The instrument switches on and goes the self-test routine (during this time the manufacturer's
logo, the name of the instrument and firmware version is displayed).
Then the
SV 104A
will run through a short start-up sequence, showing the current configuration setup
loaded along with the names of all of three profiles, followed by battery state screen. After this, the instrument
will enter the stopped (ready to measure) mode and enter the running instantaneous SPL mode if enabled.
Note: Warm up time - After power on, the instrument should be warmed up for at least
60 seconds before starting measurement.
Note: If you leave the instrument in stopped (ready to measure) mode, the display will be
switched off after 30 seconds, and the unit will turn off after approximately 5 minutes of no keypad activity
to save the batteries.
Note: SV 104A will show a warning screen if the battery capacity is below 2 hours of
potential measurement time.
TURNING OFF:
To shut down the unit the operator should hold the
<ENTER>
key for a couple
of seconds during which a countdown
(“Shutting down” 3… 2… 1… ) is displayed. Thus, the
SV 104A
gives
you time to decide if you really want to turn off the instrument. If you release the key too early, the
SV 104A
returns to the last presented
VIEW
mode.
If enabled in the configuration setup there may be presented an additional, double-check, warning
screen. This is for the operator to be aware and convinced the unit is really to be turned off. See figure below:
Figure 4-2
Power-off warning screen
Note: SV 104A will automatically shut down after 5 minutes in stopped mode.
Note: If auto-run (timer) mode is active, SV 104A will automatically stop the measurement
when the set time is over and then turn off. If no auto-run mode is used and specific time has not been
preset, the unit will continue to measure until the battery is exhausted. Just before switch off,
the measurement run will be stopped and all data until that point will be saved securely for later download
to the PC.
