Nevion FRS-HD-CHO - Manual (Page 33)

FRS-HD-CHO Rev. 9
nevion.com | 33
mtx 2 <i1> <o1> mtx 2 0 0
mtx 2 1 0 size M:N i1 i2 i3... iN Audio embedder bypass
0: Embedding disabled
1: Embedding enabled
agen 0 lvl <sine_level>cBFS agen lvl -180
agen lvl -200
sine 1kHz lvl
<sine_level>cBFS Audio generator
The amplitude of the generated sine that can
be chosen as fallback in audio change-overs.
Legal values are -180cBFS or -200cBFS
(centiBel referred to full scale output). Units
are optional, but if included must be written
as cBFS (case sensitive).
aprc 0-9 lr |
rl |
ll |
rr |
nlr |
lnr |
mm |
ms |
lvl <gain>
aprc 0 lr
aprc 3 ll
aprc 6 mm
aprc 7 lvl -400 lr |
rl |
ll |
rr |
nlr |
lnr |
mm |
ms Audio processing
one block for each output from cho 2-9 that
is routed to the embedder. The meaning of
the commands are as follows:
lr = Normal
rl = Channel swapped
ll = Left channel to both output 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
lvl means level and is the gain setting.
trig 0-8 msk <mask> (‘&’ |
‘|’)
en | dis
t1 <hold_time>
lvl <bitnr>
<threshold>
trig 3 msk 0x13 |
trig 0 dis
trig 2 t1 1000
trig 6 lvl 0 -65 en msk 0x0 | t1 0x2710
lvl 0 -66 Triggers for synchronous switching
The trig blocks responsible for the
synchronous switching between the
electrical inputs. Each trig block has it’s own
hold time and a mask that select which bits
should be taken into account, and if these
bits should be or'ed or and'ed together. Some
bits may have a user selectable threshold
values. In the case that one threshold is valid
for several bits, the lowest bit number is
used. For instance, silence threshold in
‘Audio in silence trigger’ is valid for all 8
bits, but the command targets bit 0 only. For
bit masks, see chapter 5.3 on input selection
and triggers.
supr 0 en | dis | auto
lb <page> <L1>
<L2>…<L16>
font <tag> supr 0 auto
supr 0 lbl 0 65 66 67 0
supr 0 font 1252 Supr 0 en font 0x4e4 lb 0
86 73 68 69 79 10 76 65
66 69 76 Label generator
A label generator can be superimposed on
the video. The setting ‘en’ means it is
always superimposed, ‘dis’ means it is never
superimposed, and ‘auto’ means it is
superimposed on the internal video
generator only.
The text in the label can be set or modified
by the lb <page> sub-command, where page
is 0 to operate on letters 1-16 or 1 to operate
on the letters 17-32.
The letters follow as a string of ASCII
numbers. To write more than 16 letters, two
commands must be issued. A string is
always terminated at an ASCII 0, and ASCII
10 is linefeed/new line. Only the first ASCII
10 will be honored.
In the second example command, the label
string is set to ‘ABC’ and terminated with
ASCII 0. If not terminated, the command
would’ve modified the first 3 letters of the
string, but any remains of a previous string
would still be present (until ASCII 0 or 33
rd
letter encountered).
Note 1: When the flash is busy programming
the FPGA or is being programmed with new