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the user chooses the option “Log off” from the Menu (see section 5.8 and 5.9),
keyboard is not used for a certain period.
If the user enters an incorrect password three times in a row, log on feature will be locked for 5 minutes and
each effort to access the option requiring higher access level will generate the following message “Log off
lock, wait for X min”, where X is the number of minutes remained to unlock.
For information on the access level required for each unit option, see section 5.2.
Default passwords include:
level 1 password is: 1000
level 2 password is: 2000
Before commissioning the detection system, it is necessary to change the default access
password (see section 5.9).
5.4
Starting the unit, testing the user’s interface
To check the Sigma Control L Unit for proper operation, perform the user’s interface test. While testing, the
unit starts all front panel LEDs (status and System Visual Indicator LEDs) as well as internal buzzer, all display
pixels become darkened. After approx. 1 second, the LEDs and buzzer go off, while the display presents
a welcome screen (see Figure 14). Product revision number is shown at the bottom area of the screen. After
2 seconds, the unit passes to system view.
5.5
System view
The system view is the basic view of operating the Control Unit. It contains condensed system status
information. Combined with the System Visual indicator being its addition, it provides complete information
on gas detection key status components.
The screen is divided into a few sections (see figure 15).
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User's Manual: POD-026-ENG R17
Figure 14: Welcome screen
