
GUIDE TO INSTALLATION AND OPERATION
XVP-1801 |
19
Freeze
tab
Freeze type
:
This is a pull-down menu with four
options – FIELD 1, FIELD 2, FRAME and BLACK.
It determines the manner in which the XVP-1801
responds to a manual freeze, a video input switch
(“hotswitch” as defined by SMPTE recommended
practice RP-168, revised January 2002), a loss of
input signal or other input errors. The four possible
options yield the following results:
Freeze Option
Auto Mode
Manual Mode
•
Field
1
Freeze to last valid FIELD
Freeze to last valid FIELD 1
•
Field
2
Freeze to last valid FIELD 2
•
Frame
Freeze to last valid FRAME
•
Black
Freeze to BLACK
Auto Freeze:
This pulldown (ON/OFF) enables or disables the auto freeze function. In Auto Freeze mode, a
reference must be present to ensure a glitchless output when a freeze is activated. There are only two freeze
possibilities in Auto mode: freeze to last valid Field or freeze to black. When Auto Freeze mode is disabled,
the content of the active picture will reflect whatever garbage is present at the input but, if a reference is
present, the output synchronization will be maintained to avoid unlocking downstream equipment.
Manual:
Select this checkbox to immediately freeze the output according to the mode selected in the Freeze
Type pull-down.
Note:
The manual freeze setting is saved in the non-volatile memory of the card. If the manual freeze is
activated and the power is cycled, the card will start in freeze mode at the next power-up and the output will
be invalid. Just turn off the manual freeze to restore the output.
In all cases, audio will be muted when there is an input error. See audio section for more information.
Figure 3.5
Input group – Freeze tab