User`s manual

doc-3331-2 OverView cDG67-DL (August 2003) 6-7
6.5.2 Mode
Hot Standby can only be selected if it has been enabled by a Barco technician
(special request).
If Hot Standby is disabled, this mode is grayed out.
BrightnessStatus
OverView DG
Operation
Active Lamp
History...
Lamp Optimization...
4
Runtimes...
Reset runtime
4
Mode 4
Hot Standby
Cold Standby
Auto Switch
Lamps
Figure 6-8
Lamps menu, Mode
Proceed as follows to select the operation mode
 Use the cursor key to highlight
Mode.
 Press
Enter to select.
 The currently selected operation mode is indicated by white dot.
 Use the cursor key to highlight the desired operation mode
 Press
Enter to select.
A message box is displayed to confirm the selection:
Lamp mode
Are you sure to switch to ‘Cold Standby’ mode?
Yes No
Figure 6-9
Lamps menu, message box to confirm the selection
In hot standby both lamps are on. In case of a lamp failure, the light output of the other lamp is
immediately switched to illuminate the optics, and there is almost no noticeable effect on the dis-
played information: no loss of information, no impact on quality. Switching time is about one sec-
ond.
In
cold standby mode the second lamp is only switched on in case a failure occurs with the active
lamp. Since the second lamp needs about one minute to reach a stable operating temperature, at the
beginning the display will have reduced brightness. The contents of information, however, is
available nearly without interrupt.
Auto Switch mode is a special version of the cold standby mode: the lamps are active in turns:
every 500 hours the light path is illuminated by the other lamp. Since the lamp is switched on
some minutes in advance, the takeover of the other lamp is equally percepted as in hot standby
mode: no noticeable effect on the displayed information, no loss of information, no impact on
quality.