Output BitsPress this softkey to set the bit resolution for the serial digital outputs.If the original Output module is installed (8100s only), there is onecontrol for the combined Main outputs (Program 1, Program 2, Preview,Aux 1, and Aux 2) and a separate control for the Aux 3/4 output pair, ifpresent. If the Enhanced (Frame Delay) Output module is installed(some 8100s and all 8150s), there is a control for the PGM/PVW outputsand separate controls for the Aux 1/2 output pair and Aux 3/4 outputpair, if installed. Use the 10 setting for full 10-bit resolution; this is thedefault. 8 Rounded rounds the 10-bit signal’s two least significant bits(LSBs) up or down to the nearest true 8-bit level. Use this setting if theoutput feeds an 8-bit device; the rounding reduces banding in shallowramps and color washes. The 8 Truncated setting discards the two LSBsof the 10-bit signal; use this mode for troubleshooting only.H BlankingThis softkey appears only with the Enhanced (Frame Delay) Outputmodule installed (some 8100s and all 8150s). Press H Blanking to adjustthe horizontal blanking width of the main outputs (Program 1/2,Preview, and Aux 1/2) and the Aux 3/4 output pair. If H Blanking isOFF, the full digital active line is output. However, the risetimes of theblanking-to-active video transitions are unfiltered and may be subject toringing. Typically, you may wish to leave H Blanking ON to properlyfilter these transitions.The pushknobs are as follows:Main Left – Adjusts the blanking width of the left edge (blanking backporch) of the main outputs, described above, in 2 pixel (148 nsecond)steps. The range is about 600 nseconds. The default, 1, sets minimumblanking; 4 sets maximum blanking.Main Right – Adjusts the blanking width of the right edge (blankingfront porch) of the main outputs, described above, in 2 pixel (148nsecond) steps. The range is about 600 nseconds. The default, 1, setsminimum blanking; 4 sets maximum blanking.Aux 3/4 Left – Appears only if the Aux 3/4 option is installed. Adjuststhe blanking width of the left edge (blanking back porch) of the Aux3 and 4 outputs in 2 pixel (148 nsecond) steps. The range is about 600nseconds. The default, 1, sets minimum blanking; 4 sets maximumblanking.Aux 3/4 Right – Appears only if the Aux 3/4 option is installed.Adjusts the blanking width of the right edge (blanking front porch)of the Aux 3 and 4 outputs in 2 pixel (148 nsecond) steps. The rangeis about 600 nseconds. The default, 1, sets minimum blanking; 4 setsmaximum blanking.8150 Technical Guide Engineering Menu9100-0212-04 - May 2000 Engineering Setup 5-15
