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8.7.3. Setting the Free-Running Frequency
Genlock
Free-run freq
-256 to 256
0
8.8.
UTILITIES
8.8.1. Accessing Information about this Module and its Firmware
Utilities
About...
8.8.2. Saving and Recalling Configurations
The CD2 modules provide two user preset areas to save the complete set of control from the On-Screen
menu. The Store preset and Recall preset menu items are used to save and recall these configurations.
For simplicity the following sections of the manual show how to store and recall from Preset 1 only.
8.8.2.1. Storing Configurations to the User Presets
Utilities
Store preset 1
Store
Cancel
This control allows you to calibrate the free-running frequency of the on-
board Voltage Controlled Crystal Oscillator (VCXO). This oscillator
provides the time-base when either operating without a reference input
(free-running) or when running with a reference and the reference video is
removed.
To calibrate the free-running frequency, use this or a similar procedure:
•
Turn off genlocking with the "Genlock source" control or remove
reference video from the reference input. Wait for the VCXO to
stabilize at its free-running frequency.
•
Apply the composite analog monitoring output video to a vector
scope that is externally referenced to the signal (usually plant
reference black) that you are trying to frequency match.
•
Adjust this control until the vectors spin slowly.
•
Turn genlocking back on or apply reference video.
This menu item lists the particulars about this module and the firmware
residing within it. It gives quick access to information about revisions that
can be used to determine when upgrades are required.
This control is used to initiate a store of the current card configuration into
one of the user presets
After selecting the store preset operation, you must change the command
to Store and press the pushbutton before the store will take place. You can
abort the operation by pressing the pushbutton when Cancel is displayed.
Revision 1.0.4
7700 MultiFrame Manual
7736CD2 Dual Composite Decoder
Page - 27
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