Tektronix VM700T - Manual (Page 9)

AMPLITUDE AND PHASE MEASUREMENTS (continued)
Measurement Range Accuracy ITS Element Standard
Differential Gain 0 to +100% ± 0.3% D2 CCIR Rec. 569
(Peak and p-p) (0% nominal)
Differential Phase 0 to 360 deg ± 0.3 deg D2 CCIR Rec. 569
(Peak and p-p) (0 deg nominal)
FREQUENCY RESPONSE MEASUREMENTS
Measurement Range Accuracy ITS Element Standard
Multiburst Flag 20 to 130% of bar ± 0.5% C1 CCIR Rec. 567
Amplitude (60% nominal)
Multiburst Amplitude 0 to 200% of flag ± 1.5% of C2 CCIR Rec. 567
(100% nominal) flag (± 2.5%
of 5.8 MHz
packet)
WAVEFORM DISTORTION MEASUREMENTS
Measurement Range Accuracy ITS Element Standard
Baseline Distortion 50% of bar ± 0.3% B1 CCIR Rec. 569
2T Pulse/Bar +25 to –90% ± 0.5% B1 CCIR Rec. 569
Ratio Error (0% nominal)
2T Pulse K-factor 0 to 10% Kf ± 0.3% Kf B1 CCIR Rec. 569
(0% Kf nominal)
Bar Tilt 0 to 40% 0.2% B2 CCIR Rec. 567
(End Points) (0%nominal)
Bar Tilt 0 to +40% ± 0.2% B2 CCIR Rec. 567
(Peak-to-Peak) (0% nominal)
Line Time Distortion 0 to 40% of bar ± 0.2% B2 CCIR Rec. 560
Bar Tilt (Rec 569) 0 to 40% of bar ± 0.2% B2 CCIR Rec. 569
Field Time Distortion 0 to 35% ± 0.5% Field Square
Wave
Chrominance-Luminance ± 50% ± 0.2% G1 or G2 CCIR Rec. 569
Intermodulation (0% nominal)
Luminance Non-linear 0 to 50% ± 0.4% D1 CCIR Rec. 569
Distortion (0% nominal)
LOW FREQUENCY ERROR
Measurement Range Accuracy Standard
Low Frequency Error 0% to 25% ± 0.8% CCIR Rec. 569
(Reported as: CCIR LF Error (0% nominal)
50-550 Hz LF Error
10-1000 Hz LF Error)
NOISE MEASUREMENTS
Measurement Range Accuracy Standard
Unweighted SNR 26 to 60 dB ± 1.0 dB Measured on one quiet
(567) 61 to 70 dB ± 2.0 dB line per CCIR Rec. 567
Luminance Weighted SNR 26 to 60 dB ± 1.0 dB Measured on one quiet
(567) 61 to 70 dB ± 2.0 dB line per CCIR Rec. 567
Chrominance Weighted SNR 26 to 60 dB ± 1.0 dB Measured on one quiet
61 to 70 dB ± 2.0 dB line per CCIR Rep. 637-2
Periodic SNR 26 to 60 dB ± 1.0 dB Measured on one quiet
61 to 70 dB ± 2.0 dB line per CCIR Rep. 637-2
Unweighted SNR 26 to 60dB ± 1.0 dB Measured on one quiet
(569) 61 to 70 dB ± 2.0 dB line per CCIR Rec. 569
Luminance Weighted SNR 26 to 60 dB ± 1.0 dB Measured on one quiet
(569) 61 tp 70 dB ± 2.0 dB line per CCIR Rec. 569
INCIDENTAL CARRIER PHASE MODULATION
Measurement Range Accuracy
ICPM (requires zero Carrier Pulse and the quadrature 0 to 30 deg. ± 1.0 deg.
output of the demodulator on Channel C)
AUTO MODE
LINE BLANKING TIMING MEASUREMENTS
These measurements are all made on samples acquired from the live signal area. With
the exception of Line Sync Rise Time and Fall Time, these measurements are made in
accordance with CCIR Report 624-1.
Measurement Range Accuracy
Color Burst Duration 6 to 13 cycles (10 cycles nominal) ± 0.1 cycle
Front Porch Duration 0.5 to 3 µs (1.5 µsnominal) ± 20 ns
Line Blanking 9 to 16 µs (12 µsnominal) ± 50 ns
Line Sync Rise and Fall Times 120 to 300 ns ±15 ns
300 ns to 1 µs ± 30 ns
Line Sync 1.4 to 6.6 µs (4.7 µs nominal) ± 10 ns
Sync-to-Start of Burst 2.2 to 8 µs (5.6 µs nominal) ± 20 ns
Burst Duration 1.4 to 3 µs ± 25 ns
SCH Phase ± 90 deg ± 5 deg
FIELD BLANKING TIMING MEASUREMENTS
Measurement Range Accuracy
Equalizing Pulse Duration 1.4 to 20 µs (2.35 µs nominal) ± 10 ns
Broad Pulse Separation 1.4 to 20 µs (4.7 µs nominal) ± 10 ns
OTHER TIMING MEASUREMENTS
Measurement Range Accuracy ITS Element Standard
Bar Rise Time 120 to 300 ns ± 20 ns B2 Measured from
0.3 to 1.0 µs ± 30 ns 10% to 90%
points
AMPLITUDE AND PHASE MEASUREMENTS
Measurement Range Accuracy ITS Element Standard
Average Picture Level 0 to 200% ± 3%
Sync Amplitude Error +100 to –50% ± 0.5% Live picture
(300 mV nominal) of nominal area CCIR Rec. 569
Sync Amplitude Error +100 to –50% ± 0.3% Last broad CCIR Rec. 569
(with Sound-in-Sync) (300 mV nominal) of nominal pulse in field
Burst Amplitude Error +80 to –50% ± 1.0% Live picture CCIR Rec. 569
(300 mV nominal) area
Chrominance Reference –80 to +50% ± 1.0% D2 CCIR Rec. 569
Amplitude Error (300 mV nominal)
Luminance Bar +30 to –70% ± 0.3% B2 CCIR Rec. 569
Amplitude Error (700 mV nominal)
Luminance Bar 200 to 900 mV ± 2.2 mV B2
Amplitude
Luminance Bar 0 to 90% of ± 0.3% B2 and
Amplitude Maximum Carrier Zero Carrier
(% of carrier)
Residual Carrier 0 to 90% of ± 0.3% B2 and
(Bar Top) Maximum Carrier Zero Carrier
Blanking Level 0 to 90% of ± 0.2% Live picture CCIR Rep. 624-1
Zero Carrier area
Chrominance-Luminance ± 75% of bar ± 1.0% G1 or G2 CCIR Rec. 569
Gain Inequality amplitude
Chrominance-Luminance ± 300 ns ± 5 ns F or G1 CCIR Rec. 569
Delay Inequality (0 ns nominal) or G2
Sync/Bar Rel. 3/7 20 to 110% ± 0.5% B2 CCIR Rec. 569
Sync to Bar Top 0.5 to 2 V ± 0.5% B2 CCIR Rec. 569
C/L Gn Err (using ± 50% ± 1% F
modulated Pulse)
Sync Amplitude 75 to 600 mV ± 1.5 mV
Burst Amplitude 75 to 600 mV ± 3 mV
Burst Amplitude ± 2%
Difference
Burst Quadrature Error ± 1 deg
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