Tektronix 1910 Digital Video Signal Generator

Tektronix 1910 Digital Video Signal Generator
Manufacturer: Tektronix
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Tektronix 1910 Digital Video Signal Generator 

Tektronix 1910 Digital Video Signal Generator

Rent me for $200 a month

  The Tektronix 1910 Digital Generator is a state-of-the-art test signal generator designed for performance testing of NTSC video systems and equipment. The Tektronix 1910 is especially suited where high accuracy and stability are required. It is also a VITS inserter (internal and external) with a full complement of signals that allow testing in studio, transmitter, production or research environments. Four external VITS inputs permit insertion of signals such as videotext, closed captioning, source ID, and other similar sources. These four inputs may be converted to four pulse outputs for use in a production environment.

Features

  • Four External VITS Inputs for Insertion of Teletext,
  • Closed Captioning, Source ID, Etc.
  • Nonvolatile Memory to Maintain Selected VITS and Full Field Signal Configuration After Power Interruption
  • Signal Stored in Replaceable PROMs
  • The Accuracy and Stability of All-digital 10-Bit Sync and Signal Generation
  • RS-232 Remote Control Port

   Test signals are stored as 10-bit digital words and converted to analog form by a 10-bit precision DAC (with deglitching to reduce differential gain and differential phase) to ensure signal accuracy as well as long-term stability and repeatability. Since all signals are stored in replaceable EPROMs, changing needs and industry standards will not cause obsolescence. Control and versatility of the 1910 are greatly enhanced by the use of its RS-232 control port. Most functions of the 1910 can be controlled, reconfigured, and saved. This includes VITS and full field signal selection, matrix signal creation, and sequences.

Program Line

   The 1910 offers full VITS and VIRS insertion capabilities which can be controlled through the RS-232 control port or through ground closures with the remote control unit. The 1910 may be used to insert either internally or externally generated test signals or data patterns in any combination on lines 10 through 20. Full sync and burst insertion capabilities with accurate SCH phasing eliminate the need for proc amps. When used as a VITS inserter, the program line is bypassed upon loss of incoming sync to prevent nonsynchronous VITS or sync insertion. The 1910 may be reconfigured so that transmitter protection may be enabled where the loss of incoming sync will automatically cause a test signal to be inserted on the program line to maintain sync continuity until normal operation is restored.

External VITS Inputs

   Four terminated inputs are standard in the 1910. Externally generated VITS from another source such as teletext, source ID, close captioning, etc., can be internally gated and inserted into the program. External VITS can be inserted on any field of lines 10 through 20 as selected by RS-232 control port or the remote control unit.

Pulse-Out Feature

   This included feature of the 1910 allows the user to change the four external VITS inputs to four pulse outputs. The outputs available are H Drive, V Drive, Composite Blanking, and Burst Flag. Composite sync and subcarrier outputs are always available. The 1910 can also be used as a stand-alone signal source that will remain SCH phased and locked to an internal oven-controlled reference.

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