A.2 normal control blocks, Frs-3g-dual rev. b – Nevion FRS-3G-DUAL User Manual
Page 25
FRS-3G-DUAL
Rev. B
nevion.com | 25
A.2 Normal control blocks
Block Blk#
Commands
Example
Response
Control
ceq
0-1
-
ceq 1
cd | ncd
Cable equalizer for electrical
input. No control; only used to
report carrier detect or no carrier
detect.
cho
0-1
pri <k> |
pri <k> <l> |
pri <k> <l> <m>
latch reset
t1 <hold_time>
t2 <lock_time>
cho 0 pri 0
cho 1 pri 0 1
cho 0 latch reset
cho 0 t1 1000
cho 0 t2 1000
size 4 pri k,l,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 or
2 entries, or levels.
0 = from electrical input
1 = internal video generator
2 = mute
3 = none
The module will always respond
with 2 levels, filling in 3=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.
dly
0-1
<lines>lines <samples>sps
dly 1 1lines -
30sps
'phase' <lines> lines
<samples> sps
Video phase
Sets the output phase relative to
the sync reference. If lines != 0
the resulting phase will vary with
incoming video standard.
In info this block reports back the
current delay in nanoseconds and
converted to samples only.
dly
2-3
<frames>frms
dly 0 2frms
'tgt' <frames> frms
Additional frame delay
This sets the additional video
delay of the card.
gpi
0-1
act |
inact
gpi 1 act
gpi 1 inact
VS error triggered by
inact: Flywheel error only
act: VS error bit also set if
incoming vstd doesn’t match vgen
vstd.
pwr
0-3
-
pwr 0
<nom_voltage>Vnom
<voltage>V
Power monitoring
The nominal voltages are listet
with the measured voltages. For
this product the following
voltages are measured:
0: 1.2Vnom
1: 1.2Vnom
2: 1.2Vnom
3: 5.0Vnom
rcl
0-1
-
rcl 0
lock | lol
Reclocker
No control, only used to report
lock status.