Grass Valley NV5128 v.2.5 - Manual (Page 82)

72 Rev 2.5 • 24 Sep 09
4. Configuration
Setting Jumpers and Switches on Cards and Card Sets
are provided to preserve as best as possible the color and luminance integrity of signals processed
using AVC cards.
While composite PAL and NTSC inputs can be applied to and simultaneously routed by the AVC
input card (EM0432), all NTSC signals must be in the same format (NTSC-M or NTSC-J). The 8-
position DIP switch (S1) on the AVC input card configures the card to process NTSC signals cor-
rectly. If the incoming signals are NTSC-M formatted signals, set DIP Switch S1-1 to ON. The ON
position for S1-1 is determined by the markings on the body of the DIP switch. If the incoming for-
mat is NTSC-J (no pedestal), set S1-1 to OFF. The remaining seven switch positions (S1-2 through
S1-8) are not used. Switch S1-1 settings have no effect on PAL signal processing.
There are three 8-position DIP switches on the AVC output card (EM0433), labeled S1, S2 and S3.
Switch S2 is not used. The S1 and S3 switches (labeled ‘USER SETTINGS’) configure each output
for the correct NTSC output format (pedestal or no pedestal).
The AVC input card feeds NTSC signals to the AVC output card. All 16 outputs on each output
card must have pedestal settings that match the pedestal settings on the AVC input card. For exam-
ple, if the input card’s S1-1 is set to ON, then the output card’s S1 and S2 must have all 16 switches
set to ON. Refer to the silk screen markings on the AVC output card to identify and set switches to
their proper positions. Do not use markings on the actual switch bodies.
If signals fed to the AVC output card originate from SD input cards, then each output can be config-
ured for pedestal or no pedestal (NTSC-M or NTSC-J) composite outputs. DIP switches S1 and S3
have no effect when handling PAL signals.
Note Attempting to convert NTSC-M signals to NTSC-J signals or vice versa results in
large Chroma/Luma gain errors.