Nevion FRS-HD-CHO - Manual (Page 8)

FRS-HD-CHO Rev. 9
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3 Configuration
The board can be configured both manually and through the system controller Multicon
Gyda. However, only a few of the configurable parameters are available when operating in
manual mode.
3.1 Manual mode
To reach manual mode DIP16, labeled OVR, on the board must be switched on (to the right)
and the board must be re-booted. This takes the board out of Multicon Gyda control (if it was
previously set to off) and
a number of the module‟s features will be controlled directly by the
other DIP switches, the rotary switch, and the two pushbuttons. Settings not controlled by
any of these switches are kept unchanged from previous session (factory setup or Gyda
setup).
The Manual Mode configuration controls are all found on the front side of the board. There
are two sets of DIP switches, one rotary switch and two push buttons. The slide switch on the
lower right is used to select sync source for both modes of operation, see 3.1.2 below.
Figure 2: The figure shows a top view component printout of the board. LEDs, push-buttons,
the rotary switch and the 2 sets of DIP-switches are colorized.
3.1.1 Rotary switch and push buttons
The rotary switch, labeled DLY, adjusts the phase delay by -5 to +4 video lines. It is only
functional when a sync signal, black & burst or tri-level, is present at the sync input. The
rotary switch is accessible from the front of the rack.
The push buttons, labeled INC and DEC, are used to fine adjust the phase delay by samples.
It can adjust within +/-
½ video line for the video standard seen by the module.
3.1.2 Slide switch
The slide switch on the lower right side of the card selects between backplane sync input
(BP) and Flashlink rack distributed sync (RACK). The rack distributed sync is a future feature
upgrade of the Flashlink frame, and at present the switch should always be set to its lower
position (to BP).
3.1.3 Factory reset function
The factory reset function restores the module to its default settings. These settings are just
a start condition for the board, and changes done by the user will still take effect and be
stored.