Specifications

General Operation
VTM Series Installation and Operation Handbook
3-47
Table 3-27. Description of Timing Display Diagram
Field
Identifier
Field information
Nomenclature
1
Input Displays the user-configurable source IDs for the input and
routers.
2
Vertical scale Displayed as V: 1Line/DIV
3
Horizontal Scale Displayed as H: X where X is the number with µS/DIV for
analog, SD, and HD formats
4
Timing Graticules, cursors
and labels
Shows the timing graticules, cursors, and labels
5
Selected Reference Displays the selected reference as REF: X where X is A, B,
C, D, EXT BB, EXT TRI, or LTC. The REF is selected in the
TIMING pane menu.
6
Test Indicates the test input that is being measured against the
Selected Reference in Field Identifier 5.
7
Vertical Displays the Vertical Error Measurement as VERT: xxx
Line(s) where xxx is the measured difference between the
reference and the test input alignment of the vertical timing
(sync/TRS) in lines.
8
HORZ (Horizontal) Displays the Horizontal Error Measurement as
HORZ: yy.yyy uS where yy.yyy is the measured difference
between the reference and the test input alignment of the
horizontal timing (sync/TRS).
9
REF OFFSET Displays that the zero point of the timing measurements are
offset from the REF selection by xx lines yy.yyy µs
When a signal is processed, there is the potential for it to be delayed with respect to a
reference signal. The Analog/Digital timing display is used to indicate when a video
input is deviating in time from the reference. See Reference Selection on page 3-48 for
more information on reference selection.
REF (Reference), located in the center of the timing display, indicates the
reference-timing point for the type of signal being monitored. REF is green when the
line and µsec (microseconds) cursors are all aligned. As the signal falls out of timing
alignment, the line and the µsec cursors change color when it moves from REF. When
this occurs, the REF turns red. Each hash mark represents a vertical line (top scale)
and 1µ (bottom scale). Once the line or µsec cursors are at the edge of the display,
arrows will appear to the right or left of the timing line.
NOTE: The Timing Display alignment accuracy is ±280 ns.
The bottom of the Timing display contains the following information:
• REF – The selected reference input that represents the REF line in the Timing
display (EXT REF, INPUT A, B, C, D, LTC).
• TEST – The selected input (A, B, C, or D) that is being monitored.
• VERTICAL – The offset line in full-video lines between the reference and the
displayed video.
• HORIZONTAL – The offset time in microseconds between the reference and the
displayed video. Horizontal can be yellow at 0 µsec. It displays the minimum