Tektronix VM700T CHROMINANCE NON-LINEARITY, COLOR BAR, DIFFERENTIAL GAIN AND PHASE

Chrominance Non-Linearity measurement.
Color Bar measurement.
Luminance Level (mV )Luminance Level (mV )
Chrominance Level (mV )Chrominance Level (mV )
Chrominance Phase (deg)Chrominance Phase (deg)
Gray Gray Yellow Yellow Cyan Cyan Green Green MagentaMagenta Red Red Blue Blue Black Black
0.0
500.0
1000.0
0.0
500.0
1000.0
0.0
500.0
1000.0
0.0
500.0
1000.0
0.0
100.0
200.0
300.0
400.0
0.0
100.0
200.0
300.0
400.0
ColourBar (Sync = B) Wfm --> ColourBar (Sync = B) Wfm --> Colour Bar
32 -> 32
Line = 446 (SIS mode) Line = 446 (SIS mode)
Average Average
700.6 464.9 369.9 309.9 214.6 154.7 59.6 -0.3
0.7 474.4 670.2 620.8 621.7 670.7 476.6 0.6
------- 166.6 283.0 240.9 61.0 103.0 346.6 -------
MEASURE MODE (continued)
CHROMINANCE NON-LINEARITY4
Absolute Relative
Measurement Range Mode Mode
Accuracy Accuracy
Chrominance Amplitude 0 to 100% ± 0.4% ± 0.2%
Chrominance Phase 0 to 360 deg ± 1 deg ± 0.2 deg
Chrominance to Luminance –50 to +50% ± 0.2% ± 0.2%
Intermodulation
COLOR BAR
Absolute Relative
Measurement Range Mode Mode
Accuracy Accuracy
Luminance Level 0 to 700 mV ± 3.5 mV ± 0.2%
Chrominance Level 0 to 700 mV ± 1.0% of ± 0.2%
(excluding gray and black) nominal
Chrominance Phase ± 180 deg ± 0.5 deg ± 0.1 deg
DIFFERENTIAL GAIN AND PHASE
Absolute Relative
Measurement Range Mode Mode
Accuracy Accuracy
Differential Gain 0 to 100% ± 0.3% ± 0.03%
(Minimum, Maximum, and Peak)
Differential Phase 0 to 360 deg ± 0.3 deg ± 0.03 deg
(Minimum, Maximum, and Peak)
4
4Accuracies for chrominance non-linearity amplitude and phase measurements assume an average of 256.
Differential Gain and Phase measurement.
Chrominance Amplitude Error (%) Ref = 420 mV PacketChrominance Amplitude Error (%) Ref = 420 mV Packet
Chrominance Phase Error (deg) Ref = 420 mV PacketChrominance Phase Error (deg) Ref = 420 mV Packet
Chrominance Luminance Intermodulation (% of 700 mV) Chrominance Luminance Intermodulation (% of 700 mV)
140 mV 140 mV 420 mV 420 mV 700 mV 700 mV
-3.0
-2.0
-1.0
0.0
-3.0
-2.0
-1.0
0.0
-0.6
-0.4
-0.2
0.0
0.2
0.4
-0.6
-0.4
-0.2
0.0
0.2
0.4
-0.10
-0.05
-0.00
-0.10
-0.05
-0.00
Chrominance Nonlinearity Wfm --> Chrominance Nonlinearity Wfm --> Mod 3 Step
32 -> 32
Line = 331 (SIS mode) Line = 331 (SIS mode)
Average Average
-2.2 0.0 -1.5
0.1 0.0 -0.2
-0.0 -0.1 -0.1
Differential Gain (%)Differential Gain (%)
Differential Phase (deg)Differential Phase (deg)
1st. 1st. 2nd. 2nd. 3rd. 3rd. 4th. 4th. 5th.5th. 6th. 6th.
-0.2
0.0
0.2
0.4
0.6
0.8
-0.2
0.0
0.2
0.4
0.6
0.8
-1.4
-1.2
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
-1.4
-1.2
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
DG DP (Sync = B) Wfm --> DG DP (Sync = B) Wfm --> Composite
32 -> 32
Line = 19 (SIS mode) Line = 19 (SIS mode)
Average Average
Special Positioning is in useSpecial Positioning is in use
0.00 0.66 0.56 0.38 0.40 0.31
min = 0.00 max = 0.66 pk-pk = 0.66
0.00 -0.01 -0.18 -0.68 -0.92 -0.87
min = -0.92 max = 0.00 pk-pk = 0.92
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