Tektronix VM700T Stereo Receiver User Manual


 
AMPLITUDE AND PHASE MEASUREMENTS (continued)
M
easurement Range Accuracy ITS Element Standard
D
ifferential Gain 0 to +100% ± 0.3% D2 CCIR Rec. 569
(
Peak and p-p) (0% nominal)
D
ifferential Phase 0 to 360 deg ± 0.3 deg D2 CCIR Rec. 569
(Peak and p-p) (0 deg nominal)
FREQUENCY RESPONSE MEASUREMENTS
M
easurement Range Accuracy ITS Element Standard
M
ultiburst Flag 20 to 130% of bar ± 0.5% C1 CCIR Rec. 567
A
mplitude (60% nominal)
M
ultiburst 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
2
T 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)
B
ar Tilt 0 to 40% 0.2% B2 CCIR Rec. 567
(End Points) (0%nominal)
Bar Ti
lt 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
Measur
ement Range Accuracy Standard
Low Frequency Error 0% to 25% ±0.8% CCIR Rec. 569
(Repor
ted as: CCIR LF Er
r
or (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
Measur
ed 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 W
eighted 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
INCIDENT
AL CARRIER PHASE MODULATION
Measur
ement Range Accuracy
ICPM (requires zero Carrier Pulse and the quadrature 0 to 30 deg. ± 1.0 deg.
output of the demodulator on Channel C)
A
UTO MODE
LINE BLANKING TIMING MEASUREMENTS
T
hese measurements are all made on samples acquired from the live signal area. With
t
he exception of Line Sync Rise Time and Fall Time, these measurements are made in
a
ccordance with CCIR Report 624-1.
M
easurement Range Accuracy
C
olor Burst Duration 6 to 13 cycles (10 cycles nominal) ± 0.1 cycle
F
ront 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
3
00 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
M
easurement Range Accuracy
E
qualizing 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
Measure
ment Range Accuracy ITS Element Standard
B
ar 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
Zer
o Carrier area
Chr
ominance-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 Er
r (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
9