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3.1.5. Control Button Group
PROGRAM BUS LOCK:
video. Transitions are enabled while the Program Bus Button Group is ignored (see
section 3.1.3).
BYPASS:
The BYPASS button will force the relay on the input of the I/O module to disengage.
This will route the incoming video directly out through the relay bypass output connector.
The LED above the BYPASS button illuminates to indicate that the unit is in manual
Bypass. Pressing the BYPASS button once again energizes the relay allowing the input
video to pass through the unit. The bypass relay will disengage if the frame loses power
preserving the video output stream. Note: Only the bypass output connector is bypass
relay protected, all other outputs will not function on a power loss. The bypass option
must be purchased for HD9626DSK.
3.1.6. Control Panel Status Indicators
The buttons in the Preview Bus and Program Bus groups are all fitted with internal status LEDs that
illuminate to show operational status of the downstream keyer at a glance. In general, when a button is
flashing on and off, it indicates that the associated function is active on the Preview Bus. In general,
when a button is on solid, it indicates that the associated function is active on the Program Bus.
COMM:
When illuminated, this LED indicates that the communications circuitry is active. The
communications circuitry is active when one or more external applications are sending or
receiving data from the DB9 connectors on the rear of the unit. Examples of external
applications could be Automation systems or Monitoring devices.
DSK:
This button LED indicates that the downstream keyer layer is enabled on the Preview
Bus when it is flashing and is enabled on the Program Bus when it is on solid. When it is
off, it indicates that the downstream keyer layer is disabled.
3.1.7. Electronics Unit Status Indicators
PSU STATUS 1, 2:
These green LEDs indicate that the corresponding power supply is functioning
normally. On units fitted with a single power supply the PSU STATUS 2 LED will be off
all the time.
3.1.8. Front Panel Display Functions
The 16 character alphanumeric display is used to show the Setup menu items to configure the unit.
OPERATION
The PROGRAM BUS LOCK button will lock the status of the output
Revision 1.4
HD9626DSK Instruction Manual
Page 3-3
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