Barco – TransForm A – DOC-3358-2 – service manual – Revision 06 – March 2007
_________________________________________________________________________
4-12
4.3.4
System load within an OmniBus configuration
Overload calculation
The following calculation must be used when inserting UGX
G
RAPHIC
C
ARDS
, O
MNI
S
CALERS
, Q
UAD
A
NALOG
V
IDEO
C
ARDS
,
D
UAL
DVI
I
NPUT
C
ARDS
, D
UAL
RGB
I
NPUT
C
ARDS
, S
TREAMING
V
IDEO
C
ARDS
or Q
UAD
SDI
V
IDEO
C
ARDS
or when exchanging cop-
per cables with optical cables.
There are three criteria
I1
,
I2
and
M1
. I1 and I2 stand for the current that occurs at 3.3 V and 5 V respectively. M1
stands for memory allocated by the system. Each criterion must be valid, to allow the card to be inserted.
The rule is for each criterion the same. For each card there is a value that must be multiplied by the amount how
often it is inserted in the O
MNI
B
US
. The system base load must always be added once. The sum may not exceed
the maximum allowed value for the device, if the configuration shall be allowed.
I1 (3,3 V)
I2 (5 V)
M1
System base load
OmniBus A12
AGS-3359-0
0.9
0.20
326
System base load
OmniBus A18
AGS-3335-0/-1
7.4
0.90
326
UGX
G
RAPHIC
C
ARD
AGX-3281-03
1.6
2.50
324
O
MNI
S
CALER
UXGA
AGX-3313-01
1.4
3.00
32
Quad Analog Video Card
R9842986
2.5
0.80
66
Dual DVI Input Card
R9842985
3.5
2.80
66
Dual RGB Input Card
R9842987
1.6
1.50
66
Streaming Video Card
R9842978
3.4
2.20
66
Q
UAD
SDI
V
IDEO
C
ARD
R9842979
1.8
1.90
66
optical cables
R76532x
–
0.36
–
Maximum
allowed
OmniBus A12
AGS-3359-0:
45
50
4096
Maximum
allowed
OmniBus A18
AGS-3335-0/-1:
70
50
4096
Table 4-8
Components values for configuration criteria calculation for OmniBus devices
It is not allowed to configure combinations of cards that do not fullfil the three above
criteria. Otherwise there is the risk to destroy the power supply or to configure the device in
a way it is not operable.
The following example illustrates how a configuration can be checked. For 3 UGX
G
RAPHIC
C
ARDS
, 6 O
MNI
S
CALERS
UXGA,
3
Q
UAD
A
NALOG
V
IDEO
C
ARDS
, 3 D
UAL
DVI
I
NPUT
C
ARDS
and 3 S
TREAMING
V
IDEO
C
ARDS
used together in an O
MNI
B
US
A18
AGS-3335-0/-1
the following calculation must be made:
I1 (3,3 V)
I2 (5 V)
M1
Value
Amount Result
Value
Amount
Result
Value
Amount
Result
System base load
7.4 * 1 = 7.4 0.90
* 1
= 0.9
326 * 1
= 326
+ UGX
G
RAPHIC
C
ARD
1.6 * 3 = 4.8 2.50
* 3
= 7.5
324 * 3
= 972
+ O
MNI
S
CALER
UXGA
1.4 * 6 = 8.4 3.00
* 6
= 18.0
32 * 6
= 192
+ Q
UAD
A
NALOG
V
IDEO
C
ARD
2.5 * 3 = 7.5 0.80
* 3
= 2.4
66 * 3
= 198
+ D
UAL
DVI
I
NPUT
C
ARD
3.5 * 3 = 10.5
2.80
* 3
= 8.4
66 * 3
= 198
+ D
UAL
RGB
I
NPUT
C
ARD
1.6 * 0
1.50
* 0
66 * 0
+ S
TREAMING
V
IDEO
C
ARD
3.4 * 3 = 10.2
2.20
* 3
= 6.6
66 * 3
= 198
+ Q
UAD
SDI
V
IDEO
C
ARD
1.8 * 0
1.90
* 0
66 * 0
+ optical cables
–
0.36
* 12 = 4.4
=
48.8
48.2
2084
Maximum allowed
70.0
50.0
4096
Table 4-9
Calculating the configuration criteria
