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Arc-sd-dmux rev. b – Nevion ARC-SD-DMUX User Manual

Page 32

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ARC-SD-DMUX

Rev. B


nevion.com | 32

Block Blk

#

Commands

Example

Response

Control

channels
rr = Right channel to both output
channels
nlr = Left channel phase inverted
lnr = Right channel phase inverted
mm = Mono, both channels = (r+l)/2
ms = Mono/stereo, m=(l+r)/2, s=(l-r)/2

ablk

0

mute ( on | off )

lvl

ablk 0 mute on
ablk 0 mute off

ablk 0 lvl -500
ablk 0 lvl 30

dac lvl cBu
mute

Audio DAC control
This word dac identifies this audio
block as a DAC. The outputs can be
muted, given as on or
off, and the output level can be set in
cBu (tenth dBu). Units are optional, if
included must be written as cBu
(case sensitive).
Note 1: The lvl and mute are
independent, so that the card will
remember the lvl setting (and change
lvl setting) while muted.
Note 2: The resolution of the lvl
control is 0.5dB but the card will
perform correct rounding to nearest
legal value and report the resulting
setting. Legal input range is [-
957cBu, 247cBu], representing the
range [-95.5dBu, 24.5dBu].

supr

0

( en | dis | auto )
font

lb


supr 0 auto
supr 0 font 0x4e4
supr 0 size 10

supr 0 lb 0 65 66 67 0

supr 0 font 0x4e4 lb
0 65 66 67 0

Video label
The video label is a text string that is
superimposed on the video. This
feature can be enabled (en) at all
times, disabled (dis) at all times, or
enabled only when the internal video
generator is active (auto).
Maximum string length is 32
characters, over maximum 2 lines.
The linefeed character (ASCII 10) is
counted as one character, leaving 31.
Strings can be terminated at any time
using ASCII 0. There’s an implicit
ASCII 0 on the 33

rd

character place.

The example string on the left will
display ‘ABC’ on a single line.
The 32 characters are transmitted in
two pages of 16 characters each.
These pages are prefixed ‘lb 0’ and
‘lb 1’.

uart

0

-

tx

The embedded data link, selectable
by cho 13. No control possible, the
word tx indicates that this is a
transceiver only.
Uart info reports link status: los (loss
of signal), raw, or the speed of the
embedded link (example:
115200/8/n/1).

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