
HU-TX500-TECH
73
TX500 series technical manual
SW 5
Switch lever
Function
Default
1 (STD)
Standard:
ON = 525 (yellow 525 LED)
OFF = 625 (LED off)
As video
2 (REF)
Reference select:
ON = SDI A Input,
OFF = EXT Reference
OFF
3 (LOC)
Local/Remote:
ON = COSMOS remote (REM LED on),
OFF = Local (LED off)
OFF
4 (DEF)
Default GPI assignment:
ON = USER (Configured by COSMOS only),
OFF = Factory
OFF
Note: ON is obtained with switch levers in the ON position, away from the card edge as
shown by the arrow.
GPI assignments are loaded on power-up or reset. When used in the TX series the 3423
modules use the GPI inputs to ‘read’ their address from the motherboard.
To ensure that the video inputs to each card fall within its timing window (if the signal sources
are all from exactly timed outputs), the keyer cards need to have their line/fraction delays set
as follows using switches on the front of the cards, if they are in local mode (Actual switch
column), or by using COSMOS (using actual offsets as described), if they are in remote
mode. If the signal sources are not from exactly timed sources, the cards must be timed
according to the instructions in the timing adjustments section.
Line switch – SW 6
Fraction switch – SW 7
Line
(Actual Switch)
Fraction
(Actual switch)
Mixer
0
0
0
1
Keyer 1
0
0
1/8
2
Keyer 2
0
0
1/4
3
Keyer 3
0
0
3/8
4
Keyer 4
0
0
1/2
5
These settings apply if all input signals are aligned to each other and to the analogue
reference.