USL JSD-60 Manual - Manual (Page 36)

Page 36
Input Name
The name that is shown on the display and logged when a particular format is selected can be set by the user. Type
a meaningful name for the format in the Input Name field.
Decode Options
With the DI-84 option (JSD-60D or
JSD-60DX) the active matrix decode
option is available. The Active
Matrix
decodes two channel
sources to 5.1 channels. For the
L_R, L_C_R, and Simple Matrix
options, two channels are routed to
the channel mixer. As shown there
are multiple channels that can be supplied audio from a two channel source. Dolby Digital® or DTS® encoded
content can only be played if a DI-84 board is present and Active Matrix is selected. Attempting to play Dolby
Digital® or DTS® encoded content without the DI-84 board will mute the audio. The following table contains the
default channel mix for the selected decode options.
Decode Option Description
L_R The two channel source drives just the left and right speakers.
L_C_R The left and right channels of the source drive the left and right speakers. The center speaker
is driven with 0.707 times the sum of the left and right channels. The LFE channel is driven
with the center channel with the SMPTE EG 432-2-2006 125 HZ low pass filter.
Simple Matrix The front speakers are driven with the same signals as L_C_R, described above. The surround
speakers are driven with 0.707 times the difference between left and right (0.707(L-R)).
Active Matrix This option is only available if a DI-84 board is installed in the JSD-60. If the input is digital and
encoded with Dolby Digital® or DTS®, the signal is decoded to 5.1. If the signal is two-channel
analog or PCM (not encoded with Dolby Digital®), the signal is decoded to 5.1 using an active
matrix.
HI/VI-N Source
The HI output can be driven by a discrete input (such as AES/EBU channel 7) , LR, LCR, or a custom mix (see
Channel Mixer in the Advanced tab). Most auditoriums are wired to put HI on AES channel 7 since that is where
the HI track is located in an Interop DCP. VI-N is typically placed on AES/EBU 8. Note that VI-N is only available on
the 8 channel digital format in 5.1 auditoriums, since it is delivered on AES/EBU channel 8. HI can be derived from