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ISS 408 Integrated Seamless Switcher • HTML Operation 60
Blacking out the Screen and Muting the Audio
You can mute the video (black out the screen) and/or audio to the program or preview
output from the Control page as follows:
1. Click the Video/Audio, Video, or Audio button to select both the video and audio planes,
the video plane only, or the audio plane only for muting.
2. Click the Program or Preview Black/Mute button. The Black/Mute button turns blue to
indicate a video and audio mute or video only mute, or it turns yellow to indicate audio
mute. If you muted the program output, the front panel Black and/or Mute LEDs light.
Click the Black/Mute button again to unmute the video and/or audio.
Freezing the Output
You can freeze the program or preview video output by clicking the Program or Preview
Freeze button. The Freeze button turns blue. When the output is frozen, the input source
can be removed and the ISS functions as a video store.
Click the Freeze button again to toggle freeze mode off.
Outputting a Test Pattern
You can select a test pattern to output on the program and/or preview monitor. The test
patterns are helpful when adjusting the connected displays for color, convergence, focus,
resolution, contrast, grayscale, and aspect ratio.
Output a test pattern as follows:
1. Click in the Test Pattern field. A drop-down box appears (see figure 44).
Figure 44. Test Pattern Drop Box
2. Click the desired test pattern.
3. Click the Program and/or Preview check box to turn on the test pattern.
Previewing the Scan Rate
You can read the horizontal and vertical scan rates of the preview and program output by
clicking the View Preview Scan Rate or View Program Scan Rate button. The horizontal and
vertical frequencies are displayed in the Horizontal and Vertical fields on the page.
Using Blue-Only mode
You can toggle Blue-Only mode on and off by clicking the Blue Screen Mode On check box.
Blue-Only mode is helpful in the setup of the color and tint of the incoming video signal. In
the Blue Only-mode, only the sync and blue video signals are passed to the display.