Tektronix SPG8000A, Руководство пользователя

Страница: 73 / 243

SPG8000A User Manual 59
Bit depth setting: If the selected Dolby - E program is 5.1, the bit - depth control allows
you to select either 16 -bits or 20- bits. For all other supported Dolby - E programs, the
bit- depth control shows only the 20 - bits selection.
The instrument saves the bit - depth setting for the 5.1 program type. For example, if
you select the 5.1 program w ith 16- bits data and then you change the program to
7.1, the instrument forces the bit - depth setting to 20 - bits. If you then switch back to
the 5.1 program, the instrument returns the bit - depth setting to 16 - bits, since that
was the last bit - depth selection made for the 5.1 program configuration.
Frame rate setting: If you change the Dolby E frame rate setting, it does not affect
the actual audio data being streamed out by the generator, and it does not change
the rate at which this data is being streamed or the video frame rate itself.
Dolby-E Generated Formats
Table 12 through Table 16 list the Dolby - E generated formats according to frame
rate.
Table 12: Dolby E generated formats – 23.98 Hz frame rate
Dolby-E
program
Dolby-E
level Signal levels and frequencies
8x1 Program 1 Program 2 Program 3 Program 4 Program 5 Program 6 Program 7 Program 8
M1 M2 M3 M4 M5 M6 M7 M8
–20 dBSF –20 dBFS –20 dBFS –20 dBFS –20 dBFS –20 dBFS –20 dBFS –20 dBFS –20 dBFS
2.398 kHz 2.398 kHz 2.398 kHz 2.398 kHz 2.398 kHz 2.398 kHz 2.398 kHz 2.398 kHz
–18 dBSF –18 dBFS –18 dBFS –18 dBFS –18 dBFS –18 dBFS –18 dBFS –18 dBFS –18 dBFS
2.398 kHz 2.398 kHz 2.398 kHz 2.398 kHz 2.398 kHz 2.398 kHz 2.398 kHz 2.398 kHz
Multitone –18 dBFS –20 dBFS –22 dBFS –24 dBFS –26 dBFS –28 dBFS –30 dBFS –32 dBFS
119.9 Hz 239.8 Hz 359.7 Hz 479.5 Hz 599.4 Hz 1198.8 Hz 1798.2 Hz 2397.6 Hz
7.1 Program 1 Program 1 Program 1 Program 1 Program 1 Program 1 Program 1 Program 1
L C R Ls Rs LFE Lb Rb
–20 dBSF –20 dBFS –20 dBFS –20 dBFS –20 dBFS –20 dBFS –20 dBFS –20 dBFS –20 dBFS
2.398 kHz 2.398 kHz 2.398 kHz 2.398 kHz 2.398 kHz 240 Hz 2.398 kHz 2.398 kHz
–18 dBSF –18 dBFS –18 dBFS –18 dBFS –18 dBFS –18 dBFS –18 dBFS –18 dBFS –18 dBFS
2.398 kHz 2.398 kHz 2.398 kHz 2.398 kHz 2.398 kHz 240 Hz 2.398 kHz 2.398 kHz
Multitone –18 dBFS –20 dBFS –22 dBFS –24 dBFS –26 dBFS –28 dBFS –30 dBFS –32 dBFS
239.8 Hz 359.7 Hz 479.5 Hz 599.4 Hz 1198.8 Hz 119.9 Hz 1798.2 Hz 2397.6 Hz