Quasonix RDMS, Инструкция по установке и эксплуатации

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3
rd
Generation Rack-
Mount RDMS™
137 Quasonix, Inc.
4.5.3.3.11 Channel A Video Scale
The Channel A Video Scale option, shown in Figure 229, adjusts the peak-to-peak amplitude on the I/Video A
output. By default the video output is 1.0000 V peak-to-peak using a standard deviated NTSC video signal. This
setting allows the user to compensate for a system where this is not the case.
Figure 229: Advanced Settings Window, Channel A Video Scale
4.5.3.3.12 Channel B Video Scale
The Channel B Video Scale option, shown in Figure 230, adjusts the peak-to-peak amplitude on the Q/Video B
output. By default the video output is 1.0000 V peak-to-peak using a standard deviated NTSC video signal. This
setting allows the user to compensate for a system where this is not the case.
Figure 230: Advanced Settings Window, Channel B Video Scale
4.5.3.3.13 Tape Output Frequency
The Tape Out Frequency option, shown in Figure 231, sets the carrier frequency for any video output that is set to
Tape Output or Carrier Only. The frequency may be selected from a standard set of values. Alternatively, any
frequency up to 46.666 MHz may be entered as a custom frequency. Note, however, that frequencies above 30 MHz
will experience filter roll-off and may not be useful.
Figure 231: Advanced Settings Window, Tape Output Frequency
4.5.3.3.14 FM De-emphasis (PCM/FM Mode Only)
The FM De-emphasis option, shown in Figure 232, is used to set the FM De-emphasis value to NTSC, PAL, or Off.
This option should be used when a corresponding video pre-emphasis filter is used on the video transmit side.