IN1608 xi Scaling Presentation Switcher • Operation
39
•
Test Pattern
— Press the navigation buttons to select a test pattern to display or to
turn off a test pattern. The available test patterns are
Crop
,
Alternating
Pixels
,
Color Bars
,
Grayscale
,
Blue
Mode
, and
Audio
Test
(pink noise). The default setting
is
Off
.
Figure 31.
Available Test Patterns
NOTES:
•
The audio test outputs pink noise on the embedded digital audio output
(2-channel, 48 kHz, 16 bit).
•
All test patterns include a single pixel border (except Blue mode).
•
All test patterns remain enabled after a power cycle.
•
Screen Saver and Timeout
— Press the
and
buttons to select the screen saver
setting or duration the screen saver remains active before sync is disabled. Press the
>
and
<
buttons to either set the screen saver to a black (default), blue, or custom color
SIS commands on page 64 to specify a custom color) screen or
to set the screen saver time-out duration to a specified number of seconds.
When there is no active video on the selected input, the device can mute the video
output to black, blue, or a custom color for a set duration before disabling output sync.
By default, the scaler outputs black video and sync (no sync time-out) with no active
input applied. The time-out duration can be set to any duration from 0-500 seconds.
•
Auto-Image
— Press the navigation buttons to turn the automatic per-input
Auto-Image mode on or off (default).
When enabled and a new input frequency is detected, the scaler first applies an existing
Auto Memory for the signal (if Auto Memory is enabled). If no entry exists, it performs an
automatic Auto-Image on the new signal. This sets a size and position for the image to
fill the screen, with respect to the current Aspect Ratio setting.
By default, the Auto-Image threshold is 25% brightness. Analog video signals greater
than the threshold are considered active video. To change the threshold value, use SIS
commands (see the
•
Aspect Ratio
— Press the navigation buttons to set the aspect ratio setting of the
active input to Fill (default) or Follow.
When in fill mode, all inputs automatically fill the entire output. To adjust an aspect
ratio for a single input rate, set the desired size and center in the
Picture Controls
on page 31). If auto memory is enabled,
these settings are saved and recalled the next time the signal is detected.
In follow mode, each input rate is displayed with its native aspect ratio mode with the
correct letter box or pillar box settings visible.
The scaler clears the previous size and position settings whenever the aspect ratio
setting for an input is adjusted.
