OmniTek OTR 1001, Руководство пользователя

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OmniTek OTR 1001 User Guide, v3.1a S-10
PQA Toolbar
Mode Selection Compensation Measurement
Figure S-8: PQA Toolbar
This toolbar appears near the bottom of the View window when the OTR is in PQA Mode. Some
of the Compensation settings are applied to the Reference signal; some are applied to the Test
signal. The way to ‘read’ the Compensation and Measurement parts as follows:
Compensation Section: Used to adjust for differences between the Reference and Test signals
Video Delay Number of frames by which the Reference signal is being delayed in
the attempt to bring it into sync with the Test signal.
Note: You should note that the delay only affects operations in which
the two signals are compared: in particular, the Reference signal
won’t
be delayed where it is displayed in a Picture tile.
Picture H/V Offsets applied to compensate for any horizontal or vertical
displacement suffered by the test signal images. The H value is
calibrated in pixels, with sub-pixels for fine tuning, while the V value
is calibrated in video lines.
Luma/Chroma Gain Adjustment for differences in the luma/chroma levels in the Test
signal compared with those in the Reference signal.
Luma/Chroma Offset Adjustment for differences between the black levels on the Test and
Reference signals. Greater than 1 if the black level on the Test signal
is lower than that on the Reference signal; less than 1 if the black level
on the Test signal is higher.
Measurement Section: Displays the measurements made by the In-Service A/V Delay block
when the Auto button was last pressed.
Pixels/Lines Record any offset detected in the positioning of the image in the test
signal. Any values recorded here need to be compensated for through
the H / V fields of the Compensation section.
Luma/Chroma Gain The differences measured between the level of the Test signal
components and those of the Reference signal. The corresponding
Gain settings in the Compensation section should be set to the inverse
of the values recorded here.
Luma/Chroma Black The black levels of the Test signal. The Luma Offset value in the
Compensation section should be set to 64 minus the recorded Luma
Black level, while the Chroma Offset value should be set to 512 minus
the recorded Chroma Black level.
SDI Timing Record the gross timing differences between the SDI input and the
SDI output at the transport level, expressed as a number of frames plus
a number of lines plus a number of pixels. The
Frames value should
be used to set the Video Delay field of the Compensation section. (The
OTR automatically applies the adjustment needed as a result of the
lines + pixels element of this timing difference.)
Measurement
Confidence Advice on the degree of confidence that should be placed in the
Gain/Offset and in the Video delay that are currently being displayed.