Connect the digital source equipment into the appropriate socket on the breakout box.

Figure C-1 points out sockets for single-link mode.

Figure C-1. Digital Video Input Ports for Single-Link Mode

Figure C-2 points out sockets for dual-link mode.

Figure C-2. Digital Video Input Ports for Dual-Link Mode

Call up the panel:

/usr/sbin/vcp

In the Digital Video Source section of the control panel vcp for the channel(s) you are using, select the format that matches your equipment, as shown in Figure C-3.

Figure C-3. Selecting Digital Input Video Format in vcp

In the Digital Video Source portion of the panel for the channel(s) you are using, select the timing that matches your equipment: CCIR 525 or CCIR 625.

To adjust horizontal phase for each digital video channel and its separate alpha line, if used, select “Digital Video Source 1” or “Digital Video Source 2” in the Pro menu, and then select “Signal Controls,.” The Sirius Digital Video Source [1, 2] window appears, as shown in Figure C-4.

Figure C-4. Digital Video Source Signal Controls

The windows for Digital Video Source 1 and Digital Video Source 2 are identical.

To enable conversion of 4:2:2:4 to 4:4:4:4 input, check the Digital Filter check box.

If you are using a dual link for 4:4:4:4, use the Dual Link Delay slider to adjust the delay of one link relative to the other to compensate for delay differences between the links.

Connect the analog source equipment into the appropriate socket on the input row of the analog side of the breakout box, as shown in Figure C-5.

Figure C-5. Analog Input Ports on the Sirius Video Breakout Box

If necessary, call up the panel (/usr/sbin/vcp).

In the Analog Video Source portion of the control panel vcp, select the format that matches your equipment, as shown in Figure C-6.

Figure C-6. Selecting Analog Input Video Format in vcp

In the Analog Video Source portion of the panel, select the timing that matches your equipment: 525, 625, CCIR 525, or CCIR 625.

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Note: In the case of large amounts of jitter, use CCIR 525 instead of 525, and CCIR 625 instead of 625.

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If you are syncing to the analog input, make sure the sync signal is cabled to the SYNC IN port on the breakout box, as shown in Figure C-5.

In the Analog Video Source portion of the panel, you can select the genlock sync source that matches your equipment, as shown in Figure C-7.

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Note: To genlock to an external sync source, see “Setting Up an External Sync Source,” later in this appendix.

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Figure C-7. Selecting Input Genlock Sync

Table C-1 and Figure C-8 summarize the correspondence between these menu choices and breakout box connectors.

Figure C-8. Genlock Sync Menu Choices and Breakout Box Sockets

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Note: If you experience problems genlocking to unstable video sources such as VCRs, VTRs, and laser disc players, try routing the video output from these devices into an external time base corrector, and feed the time base corrector's output into the corresponding connector on the Sirius Video breakout box.

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To set the voltage level for the genlock sync source, use the vcp Pro menu. In the Pro menu, select “Device Controls”, and then select “Synchronization Controls.” The Sirius Device-Sync Input Controls window appears, as shown in Figure C-9.

Figure C-9. Setting Genlock Voltage Level

To set the voltage level, select Video (1 V peak-to-peak) or TTL (4 V peak-to-peak) in the Sync Level menu item.

Use the sliders to adjust the horizontal phase for the picture.

To set field dominance or adjust horizontal phase for the video and its separate alpha, if any, select “Analog Video Source” in the Pro menu, and then select “Signal Controls.” The Sirius Analog Video Source-
Signal window appears, as shown in Figure C-10.

Figure C-10. Setting Analog Video Source Field Dominance or Horizontal Phase

To set field dominance, select at the “Dominance” menu item:

Figure C-11 shows fields as defined for NTSC and PAL.

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Note: In digital formats and other input modes, half lines become full lines.

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Figure C-11. Fields and Frames for NTSC and PAL

Users typically want to edit on Field 1 boundaries, where Field 1 is defined as the first field in the video standard's two-field output sequence. 525 standards send the second (whole) raster line out to begin the first field, and the first (half) raster line out to begin the second field; 625 standards send the first (half) raster line out to begin the first field, and the second (whole) raster line to begin the second field.

Some users may want to edit on F2 boundaries, which fall on the field in between the video standard's frame boundary. To do so, use this control, then program your deck to select F2 edits.

NTSC users might need to vary their field dominance choice, depending on the origin of the input material they are to edit.

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Note: To output a set of frames, they must be deinterlaced into fields differently, depending on the choice of output field dominance. For example, when F1 dominance is selected, the field with the topmost line must be the first field to be transferred; when F2 dominance is selected, the field with the topmost line must be the second field to be transferred. Deinterlacing must be specified in the application; the Sirius Video example program sir_memtovid.c code contains an example of how to consult the field dominance control to determine deinterleave order.

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    /*
     * Set the memory node's timing based upon the video drain's timing,
     * which has been set up by the daemon from the defaults file, or by
     * the user via vcp.
     *
     * When we get around to reading image files, we'll check the file
     * size against the size reported by the VL for this node: if the file
     * size does not match the format's, we'll punt.
     */

    if (vlGetControl(svr, MEMtoVIDPath, drn, VL_TIMING, &drainTiming) < 0) {
	vlPerror(“GetControl(VL_TIMING) on video drain failed”);
	exit(1);
    }
    if (vlSetControl(svr, MEMtoVIDPath, src, VL_TIMING, &drainTiming) < 0) {
	vlPerror(“SetControl(VL_TIMING) on memory source failed”);
	exit(1);
    }
    /*
     * Read the video drains's field dominance control setting and timing,
     * then set a variable to indicate which field has the first line, so that
     * readimage() will know how to deinterleave frames to fields.
     */
    if (vlGetControl(svr, MEMtoVIDPath, drn,
	VL_SIR_FIELD_DOMINANCE, &dominance) < 0) {
	vlPerror(“GetControl(VL_SIR_FIELD_DOMINANCE) on video drain failed”);
	exit(1);
    }

    is_525 = ((drainTiming.intVal == VL_TIMING_525_SQ_PIX)
           || (drainTiming.intVal == VL_TIMING_525_CCIR601));

    switch (dominance.intVal) {
	case SIR_F1_IS_DOMINANT:
	    if (is_525) {
		F1_is_first = 0;
	    } else {
		F1_is_first = 1;
	    }
	    break;
	case SIR_F2_IS_DOMINANT:
	    if (is_525) {
		F1_is_first = 1;
	    } else {
		F1_is_first = 0;
	    }
	    break;
    }

    /*
     * Read the video drain's field dominance control setting and set a
     * variable to indicate which field has the first line, in case readimage()
     * needs to deinterleave frames to fields.
     */
    if (vlGetControl(svr, MEMtoVIDPath, drn,
	VL_SIR_FIELD_DOMINANCE, &val) < 0) {
	vlPerror(“GetControl(VL_SIR_FIELD_DOMINANCE) on video drain failed”);
	exit(1);
    }

    switch (val.intVal) {
	case SIR_F1_IS_DOMINANT:
	    F1_is_first = 1;
	    break;
	case SIR_F2_IS_DOMINANT:
	    F1_is_first = 0;
	    break;
    }

To assemble fields to frames, the application must consult the field dominance control in order to determine the interleave order. the Sirius Video example program sir_vidtomem.c contains an example of how to consult the field dominance control to determine interleave order.

    /*
     * Set the memory node's timing based upon the video source's timing,
     * which has been set up by the daemon from the defaults file, or by
     * the user via vcp.
     */
    if (vlGetControl(svr, path, src, VL_TIMING, &timing) < 0) {
	vlPerror(“GetControl Failed”);
	exit(1);
    }
    if (vlSetControl(svr, path, drn, VL_TIMING, &timing) < 0) {
	vlPerror(“SetControl Failed”);
	exit(1);
    }
    /*
     * Read the video source's field dominance control setting and timing,
     * then set a variable to indicate which field has the first line, so that
     * writeimage() will know how to interleave fields to frames.
     */
    if (vlGetControl(svr, path, src,
	VL_SIR_FIELD_DOMINANCE, &dominance) < 0) {
	vlPerror(“GetControl(VL_SIR_FIELD_DOMINANCE) on video source failed”);
	exit(1);
    }

    is_525 = ((timing.intVal == VL_TIMING_525_SQ_PIX)
	   || (timing.intVal == VL_TIMING_525_CCIR601));

    switch (dominance.intVal) {
	case SIR_F1_IS_DOMINANT:
	    if (is_525) {
		F1_is_first = 0;
	    } else {
		F1_is_first = 1;
	    }
	    break;
	case SIR_F2_IS_DOMINANT:
	    if (is_525) {
		F1_is_first = 1;
	    } else {
		F1_is_first = 0;
	    }
	    break;
    }

Connect the sync source equipment into the GENLOCK IN socket on the SYNC section of the breakout box, as shown in Figure C-14.

Figure C-14. External Sync Input Port on the Sirius Video Breakout Box

If you are using the same signal for other equipment, attach a BNC cable to the LOOP socket under GENLOCK IN socket to loop the signal through the breakout box. Make sure the final element in the chain is terminated.

If Sirius Video is the last element in the sync chain, make sure the terminator is attached to the LOOP socket under GENLOCK IN socket.

If necessary, call up the panel (/usr/sbin/vcp).

In the Genlock Sync menu of the Video Drain section of the control panel, select the format that matches your equipment, as shown in Figure C-15.

Figure C-15. Selecting Genlock Sync Source

For correspondences between these menu choices and sockets on the breakout box, see Table C-1 and Figure C-8, earlier in this appendix.

To set the voltage level for the external sync source, select “Device Controls” in the vcp Pro menu, and then select “Synchronization Controls.” The Sirius Device-Sync Input Controls window appears, as shown in Figure C-16.

Figure C-16. Setting Genlock Voltage Level

To set voltage level, set the voltage level to “Video” (1 V peak-to-peak) or “TTL” (4 V peak-to-peak) in the Genlock Level menu item.

Connect the drain equipment into the appropriate socket on the breakout box, as shown in Figure C-17.

Figure C-17. Output Ports on the Sirius Video Breakout Box

If necessary, call up the panel (/usr/sbin/vcp).

In the Video Drain section of the control panel, select the format that matches your equipment, as shown in Figure C-18.

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Note: The burst lock feature for composite video is not available.

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Figure C-18. Selecting Video Drain Format

In the Video Drain portion of the panel, select the timing that matches your equipment: 525, 625, CCIR 525, or CCIR 625.

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Tip: In many situations, CCIR timing gives better results.

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If your drain equipment is synced to the workstation, select “Standalone (internal)” in the Sync Select menu item.

To sync output to a source other than the workstation, select “Genlock” and select a choice in the Genlock Sync menu item, as shown in Figure C-19.

Figure C-19. Selecting Output Genlock Sync

For correspondences between these menu choices and sockets on the breakout box, see Table C-1 and Figure C-8, earlier in this appendix.

You can set signal controls for the drain:

To do so, select “Drain” in the Pro menu, and then select “Signal Controls.” The Sirius Video Drain-Signal window appears, as shown in Figure C-20.

Figure C-20. Adjusting Drain Horizontal Phase

Use this window as follows:

To adjust gain for component output video, select “Video Drain” in the Pro menu, and then select “Component.” The Sirius Video Drain Component window appears, as shown in Figure C-21.

Figure C-21. Adjusting Gain for Component Video Drain

Move the sliders to adjust the picture.

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Note: Although the minimum and maximum values for gain are shown in the window as .000 to 2.000, actual ranges vary. These values are displayed when you move the sliders to the minimum and maximum (far left and far right) positions, respectively.

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