D1 Edge Insertion. Digital Processing Systems DPS-470

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Chapter 3:

Operation

D1 Edge Insertion

When the DPS-470 is in SDI input mode, this control allows you to add a soft transition from super-black to setup on the analog outputs.

NOTE: Setup is always added to the analog outputs in D1 input mode.

• Enabled

• Disabled

VITS Field 1

The Vertical Interval Test Signals (VITS) menu has two areas in which to make selections:

• LN#: specifies the number of the line in field 1 for the insertion of the test signal. The choices available for LN# are OFF, 16, 17, 18, 19.

• PAT#: specifies one of the nine test signals for insertion. The choices available for PAT# are 01 to 09.

One test signal can be inserted into one of the four lines; a field can contain only one test signal. (See Appendix B for the test signals available.)

VITS Field 2

Same as above for field 2.

TBC Mode

Enables adjustment to the VCR circuit time constant.

• Normal (Default): used for high-end broadcast VCRs.

• Head Switch used for home type or extreme head switch VCRs.

Transcoder Function

Normally the video delay through the DPS-470 varies over time from one line to two fields. In transcoder mode, the DPS-470 will have a fixed minimum delay of three lines.

• Normal Operation (Default): normal synchronizer mode.

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