360 Systems DigiCart/EX - Manual (Page 90)

Appendix E
Recording Encoded Digital Data
As of version 1.14 there is a specific selection in Record Data Format for 24 Bit Digital Data. This
can be used to record Dolby E and other formats that use non-audio (really meaning non-PCM) data.
When recording the encoded data:
• Set the Record Data Format (in the Setup Menu) to 24 BIT DIGITAL DATA.
• Set the Record Audio Source to Digital XLR or Digital BNC. If Analog Input is selected then
when Record is pressed the error “No Dig In Selected” is displayed.
• The Record Threshold setting is ignored.
• The record sample rate is derived from the digital input in use and no input or output sample
rate conversion will be applied.
The resulting file will be displayed with the file type D24.
Digital Data recordings cannot be edited by Fade In, Fade Out, or Output Gain. Head and Tail trim
are allowed (as of version 1.16).
When recording or playing in this format, the analog outputs and headphone output are muted. In
addition, several Setup Menu settings are temporarily overridden so that the data is recorded and
played back with no modification whatsoever to the digital data:
• Dither is forced OFF.
• Play Word Size is forced to 24 bits.
• Playback Sample Rate is forced to AS RECORDED and if an external digital reference is used
the reference frequency must match the sample rate of the file.
• The Audio/Non-Audio bit in the Channel Status of the AES digital output data is set to Non-
Audio.
These changes are only in effect during recording or playback of Digital Data files. The actual menu
settings are not changed and become effective when one of the other recording formats is selected or
when another format file is played back.
Notes on use with Dolby E
• The 16 bit Dolby E formats can be used, but the DigiCart/EX always records 24 bits in this
mode.
• The Dolby E decoder model DP572 should have its Bypass PCM parameter set to Disabled.
• The DigiCart should be used to play back only Dolby E encoded material through the Dolby
E Decoder.
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• Recording Encoded Digital Data