User manual
15
E
DID MANAGEMEN
T
EDID. What is it and what is it used for
?
U
nder normal circumstances, a source device
(
di
g
ital and analo
g)
will require
in
f
ormation about a connected device
/
monitor to assess what resolutions
and
f
eatures are available. The source can then tailor its output to send onl
y
r
esolutions and
f
eatures that are compatible with the attached device
/
monitor.
This in
f
ormation is called EDID
(
Extended Displa
y
In
f
ormation Data
)
and a
s
ource device can onl
y
accept and read one EDID
f
rom a connected device
/
m
onitor. Likewise, the source an onl
y
output one resolution
f
or use b
y
a
c
onnected device
/
monitor.
Why is EDID so important with the 8x8 DVI Dual Link Matrix?
yp
The 8x8 DVI Dual Link Matrix is a complex piece o
f
technolo
gy
that replicates
and switches between multiple inputs and outputs. Each connected source
device will require one EDID to read. EDID mana
g
ement is care
f
ull
y
handled b
y
the 8x8 DVI Dual Link Matrix to provide a sin
g
le EDID
f
or each source to read.
What options do I have to manage the EDID in the 8x8 DVI Dual Link
pg
M
atrix
?
First, it is important to note that each source device can onl
y
output one video
/
audio si
g
nal t
y
pe. This includes resolutions and timin
g
s. When multiple devices
/
m
onitors are used, such as with the 8x8 DVI Dual Link Matrix, it is important to
u
se devices
/
monitors that have similar or compatible resolutions and
f
eatures.
This will ensure that the sin
g
le video
/
audio si
g
nal produced b
y
the source device
is accepted b
y
all o
f
the connected output devices
/
monitors.
The user has the option, throu
g
h utilization o
f
the R
S
-232 serial inter
f
ace, to
c
hoose how the unit will mana
g
e the EDID
f
rom multiple DVI devices
/
monitors.
Th
e
r
efo
r
e
th
e
use
r h
as
so
m
e
co
ntr
o
l
o
v
e
r th
e
r
eso
l
u
ti
o
n
s
a
n
d
fea
t
u
r
es
th
a
t th
e
s
ource devices will output. The 8x8 DVI Dual Link Matrix has a Local EDID
m
ana
g
ement mode that will control how the EDID in
f
ormation is handled.
How do I change EDID modes in the 8x8 DVI Dual Link Matrix?
g
EDID modes are mana
g
ed via Telnet
/
R
S
-232 control
(
pa
g
es 17 - 27
)
or throu
g
h
the built-in Web inter
f
ace
(
pa
g
es 56 - 61
)
.