Ross 4500DR-104-07, User Manual, Page: 91 / 161

SRG-4500 User Guide (v7.0) Front Panel Menu System • 91
PAL IPSCH, NTSC IPSCH
These menu lines allow the user to adjust the Sc-H settings relating to the Genlock video signal present at the
REF-LOOP BNCs on the rear panel. This setting ensures that the 4-frame (PAL) or 2-frame (NTSC) SC-to-H
relationship of the incoming signal will be reliably determined.
To set either of these values, access to test points on the main module is required. Therefore, no specific adjustment
details will be outlined here.
These settings vary from unit to unit.
PAL HGenlockPoint, NTSC HGenlockPoint
These menu lines allow the user to set the value of the window used to align the H-timing system with the REF
LOOP signal, and thereby control Sc-H locking.
To set either of these values, access to test points on the main module is required, as well as access to a special
engineering sub-menu. Therefore, no specific adjustment details will be outlined here.
These settings are unlikely to change significantly from unit to unit. The default value for both PAL and NTSC is
0063.
PAL OPScH, NTSC OPScH
These menu lines allow the user to adjust the SC Phase of the video output relative to the reference input. This
setting is used to provide “co-timed” video outputs when they are set for a video timing offset of 0°.
Specialized equipment is required in order for these settings to be determined. Therefore, no specific adjustment
details will be outlined here. These settings vary from unit to unit.
PAL SCPhase, NTSC SCPhase
These menu lines allow the user to adjust the Sc-H settings relating to the video outputs. Specialized equipment is
required in order for these settings to be determined. Therefore, no specific adjustment details will be outlined here.
These settings vary from unit to unit.
CompGain, Black#
These menu lines allow the user to adjust the Gain and DC settings of the respective video outputs.
Each menu line displays the calibration values relating to the gain and d.c. settings of the relevant video channel
DAC. Gain values are typically in the range 0-30; d.c. values are typically in the range 382-390.
Disclaimer
Most of these settings are determined during initial testing, configuration and alignment. They should not normally
require adjustment or re-configuration during service. In some cases, specific test equipment or even custom
apparatus is required to perform calibration and configuration.
On no account should the user attempt to alter any of these settings without proper authorization from Ross Video.
If problems are encountered, these settings can be re-instated. Contact Ross Video for further instructions.
Re-installing one or more calibration settings
For the case where calibration values are simply being re-instated, simply advance the menu highlight to each
parameter in turn, and rotate the rotary control to select the required value. Be careful not to rotate the rotary control
for any setting that does not need to be changed. Be sure to exit from the menu to permanently save your settings.
 During this calibration procedure, the video output being adjusted does not produce a video output. Make sure
that you are viewing the menu on another video output from the one you are adjusting, or alternatively, use the
front panel LCD.