2 normal control blocks, Frs-hd-cho rev. 9 – Nevion FRS-HD-CHO User Manual

Page 30

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FRS-HD-CHO

Rev. 9


nevion.com | 30

misc

0

-

NOT AVAILABLE
BY COMMAND.
ONLY FOUND in
Conf 0

prog | fin

' ' | ovr

Misc info
prog if the card is freshly programmed
by the bootloader and the program is
still un-finalized. fin is the normal
condition.
ovr if DIP-switch 16 is set to the ON
position and the card is under DIP-
switch control.
Note 1: The info part of misc has
additional functionality when locate is
used: locating <remaining seconds>.
This enables a visible countdown
clock in Gyda, but is not a required
part of FLP400.

6.2 Normal control blocks

Bloc

k

Blk

#

Commands

Example

Response

Control

ceq

0

-

ceq 0

cd | ncd

cable equalizer for electrical input 1. No
control, only used to report carry detect or
not carry detect.

ceq

1

-

ceq 0

cd | ncd

cable equalizer for electrical input 2. No
control, only used to report carry detect or
not carry detect.

cho

0

pri <k> |
pri <k> <l> |
pri <k> <l> <m>

pos man <k> |
pos auto

latch reset

t1 <hold_time>

t2 <lock_time>

cho 0 pri 0
cho pri 0 1
cho pri 10 2

cho 0 pos man 1
cho 0 pos auto

cho 0 latch reset

cho 0 t1 1000

cho 0 t2 1000

size 5 pri k,l,m auto t1
<hold time> t2 <lock
time>

size 5 pri k,l,m man m t1
<hold time> t2 <lock
time>

Video input select

pri
: a prioritized list of inputs, used when
change-over is automatic. The list can have
1, 2 or 3 entries, or levels. Manual mode is
effectively the same as automatic mode with
one priority level only, but has its own
command.
0 = from electrical input 1
1 = from electrical input 2
2 = mute
3 = internal video generator
4 = none

The module will always respond with 3
levels, filling in 4=none for the levels not
used.

t1
and t2: change-over doesn't happen
immediately, as a precaution against glitches
and unstable signals. The timers t1 and t2 let
the user decide how long (in ms) we will
cling on to a missing input before we
consider it gone and move on to the next pri
level, and how long an input with a higher
priority should be present before we
consider it repaired and switch back,
respectively.

Note: MCU firmware before ver. 1.10 also
have latch and rule settings. These are
deprecated.

cho

1

size 3 pri k,l auto

size 3 pri k,l man m

No commands available. Included to show
internal status and to update Gyda graphics.

cho

2-9 pri <k> |

pri <k> <l>

cho 2 pri 1
cho 5 pri 0 2

size 4 pri k,l

Audio fallback setting
Audio change-over blocks, one cho per
audio output from the audio matrix, mtx 0.

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