Tektronix B020000, User Manual

Page: 30 / 144

Operating Basics
2–4
SPG422 Component Digital Sync Generator User Manual
Audio Signals
There are three different formats of Serial Audio signals available from the rear
panel: AES/EBU from BNC connectors, AES/EBU from XLR connectors, and
embedded audio in the Serial Digital Video signal. If any audio parameters
change, then all of the audio outputs are affected. Different audio tones and
levels are available for each channel. Up to four channels are available. Turn
them on or off and change the tone and levels independently.
Although the output frequency and amplitudes are the same, the AES and
embedded audio are essentially generated by separate generators. Therefore,
there is no consistent phase relationship between the two with respect to audio
tones. The digital audio sample frames are synchronized with the video frame.
(For more information see page 3–20 in the Reference section .)
Serial Signals (Option 2 only)
If option 2 is not installed then these outputs are plugged. Both outputs have
identical signals. There are a wide variety of signals from which to choose. The
timing offset relative to the genlock is selectable. The standard is selectable and
can be independent of the genlock standard. If the standard is different from the
genlock, then it takes its timing from the internal oscillator that is clock-locked
to the Genlock signal. Therefore, the signal will be clock-locked but not
frame-locked to the Genlock reference signal.