VM700T Option 01

Characteristics

The performance requirements cited in this section are valid only within the following environmental limits:

• Temperature range of 0 to 50 °C, with a minimum warm-up time of 20 minutes. The following tables list each measurement and its performance requirement
• The range specifies the extremes between which a measurement can be made
• All measurement accuracies specified are valid only with nominal input signals of 1 V_p-p (±6 dB) with an unweighted signal-to-noise ratio of at least 60 dB on the incoming signal and a termination accuracy of ±0.025% (Tektronix PN 011-0102-xx or equivalent)

Measure Mode*^{1, 2}

*¹ All accuracies for measurements with averaging capabilities assume the default average of 32.

*² All accuracies for measurements with relative to reference mode assume an average of 256 was used to create the reference.

Bar line time measurement.

Bar Line Time

Bounce

Burst Frequency*³

*³ Requires a reference signal.

Chrominance-to-Luminance gain and delay measurement.

Chrominance-to-Luminance Gain and Delay

Chrominance Frequency Response

Chrominance Noise

Chrominance nonlinearity measurement.

Chrominance Nonlinearity*⁴

*⁴ Accuracies for chrominance nonlinearity amplitude and phase measurements assume an average of 256.

Color bar measurement.

Color Bar

SMPTE Color Bars Nominal Values

Differential gain and phase measurement.

Differential Gain and Phase

Frequency response and group delay measurement using Sin x/x.

Frequency Response and Group Delay

Horizontal Blanking

Horizontal timing measurement.

Horizontal Timing

Incidental Carrier Phase Modulation

H Jitter.

Jitter

K-Factor measurement.

K-Factor

Level meter measurement.

Level Meter

Line Frequency

Luminance nonlinearity measurement.

Luminance Nonlinearity

Multiburst measurement.

Multiburst*⁵

*⁵ Total Harmonic Distortion on packets must be ≤46 dB.

Noise spectrum measurement.

Noise Spectrum

SCH phase measurement.

SCH Phase

Vertical blanking display.

Vertical blanking serration pulse measurement.

Vertical Blanking

Auto Mode

RS-170A Horizontal Blanking Interval Timing Measurements

RS-170A Vertical Blanking Interval

FCC Horizontal Blanking Interval Timing Measurements

FCC Vertical Blanking Interval Timing Measurements

Amplitude and Phase Measurements

Frequency Response Measurements

Incidental Carrier Phase Modulation

Color Bar Measurements

Out-of-Service Measurements

Waveform Distortion Measurements

VIRS Measurement

Signal-to-Noise Ratio Measurements

Unified Unweighted filter response curve per CCIR Recommendation 567.

Unified Luminance Weighted filter response curve per CCIR Recommendation 567.

NTC 7 Unweighted filter response.

NTC 7 Luminance Weighted filter response.

Measurement Methods - Auto Mode

The following paragraphs describe the measurement methods for each measurement. Each timing measurement method is written for the FCC method. If there is an RS-170A method for that same measurement, and the RS-170A method differs from the FCC method, the RS-170A requirement is enclosed within square brackets in the FCC description.

Horizontal Interval Timing Measurements

These timing measurements are made within the active picture area, averaging the results over 32 lines starting at line 50 and skipping 1 frame plus 5 lines for each successive sample (i.e., average over line 50 of first field, line 56 of second field, line 62 of the third field, etc.).

• Breezeway Width: Measured from the 10% point on the trailing edge of horizontal sync (nominally -4 IRE) to the leading half-amplitude point of the burst envelope.
• Color Burst Width: Measured from the leading half-amplitude point on the burst envelope [leading zero crossing of the first half-cycle of burst that exceeds 50% of burst amplitude] to the trailing half-amplitude point on the burst envelope [trailing zero crossing of the last half-cycle of burst that exceeds 50% of burst amplitude].
• Front Porch Duration: Measured from the 10% point on the trailing edge of setup (+4 IRE nominally) to the 10% [50%] point on the leading edge of sync (nominally -4 [20] IRE).
• Horizontal Blanking Width: Measured between the points on the leading and trailing edges of horizontal blanking that are at an amplitude of 10% [50%] of sync above blanking level (nominally +4 [+20] IRE).
• Horizontal Sync Rise Time and Fall Time: Measured between the 10% and 90% points on the leading and trailing edges of horizontal sync, respectively (nominally -4 IRE and -36 IRE).
• Horizontal Sync Width: Measured between the 10% [50%] points on the leading and trailing edges of horizontal sync (nominally -4 [-20] IRE).
• SCH Phase: Phase at the middle of burst relative to the 50% point on the sync leading edge.
• Sync to Setup: Measured from the 10% [50%] point on the leading edge of sync (nominally -4 [-20] IRE) to the point on the trailing edge of blanking that is equivalent to 10% of sync (nominally +4 IRE).
• Sync-to-Start of Burst: Measured from the 50% point on the leading edge of sync (nominally -20 IRE) to the leading zero crossing of the first half-cycle of burst that exceeds 50% of burst amplitude.
• Sync-to-End of Burst: Measured from the 10% point on the leading edge of horizontal sync (nominally -4 IRE) to the half-amplitude point on the trailing edge of the burst envelope.

Vertical Interval Timing

Equalizing Pulse Width: Measured between the 10% [50%] points on the equalizing pulse (nominally -4 [-20] IRE).

Serration Width: Measured between the 10% [50%] points of serration (nominally -4 [-20] IRE).

Vertical Blanking Width: Measured between the points on setup [active picture] at a level equal to 10% [50%] of sync amplitude (nominally +4 [+20] IRE), where setup [active picture] immediately precedes and follows the vertical blanking interval.

Color Bar Measurements

Color Bar Amplitude Error: Measured as deviation of the peak-to-peak amplitude of each color bar from the nominal value for that color bar expressed as a percent of the nominal value. Six values reported.

Color Bar Phase Error: Measured as deviation of the phase of each color bar from the nominal phase for that color bar, relative to burst phase. Six values reported.

Color Bar Chrominance-Luminance Gain Ratio: Measured as ratio of chrominance level to luminance level of each color bar, relative to the nominal ratio for each color bar. Six values reported.

Color Bar Values

Amplitude and Phase Measurements (FCC or NTC-7 Composite VITS)

VITS ID display.

• Bar Top: Measured as the ratio of the bar top to Zero Carrier amplitude to the blanking (at back porch) to the Zero Carrier amplitude. Result expressed as a percent of Max Carrier.
• Bar Amplitude: Measured from the reference blanking level (at back porch) contained within the test line to the level at the center of the bar.
• Burst Amplitude: VITS not required. Burst amplitude must be at least 10 IRE. Measured as peak-to-peak amplitude of the color burst at burst center.
• Chrominance-Luminance Delay Inequality (Relative Chrominance Time): Measured as the time difference between the luminance component and chrominance component of the modulated 12.5T pulse.
• Chrominance-Luminance Gain Inequality (Relative Chrominance Level): Measured as the peak-to-peak amplitude of the chrominance component of the modulated 12.5T pulse.
• Differential Gain: Measured as the absolute amplitude difference between the smallest and largest staircase chrominance packets. Result expressed as a percent of the largest packet amplitude.
• Differential Phase: Measured as the largest difference in phase between any two staircase chrominance packets.
• Luminance Nonlinear Distortion: Measured as the difference between the largest and smallest step amplitudes of the staircase at the center of each step. Result expressed as a percent of the largest step amplitude difference.
• Relative Burst Gain: Measured as the difference between the peak-to-peak amplitude of burst and the staircase chrominance packet located at blanking. Result expressed as a percent of the packet amplitude.
• Relative Burst Phase: Measured as the difference in phase between the color burst and the staircase packet located at blanking.
• Sync Amplitude: Measured from the tip of the horizontal sync pulse to blanking level.
• Blanking Level: Measured as the ratio of the blanking (at back porch) to Zero Carrier amplitude to the sync tip to Zero Carrier amplitude. Result expressed as a percent of Max Carrier.
• Sync Variation: Measured as the peak-to-peak variation of the horizontal sync pulse amplitude within every third line of a field.
• Blanking Variation: Measured as the peak-to-peak variation of the blanking level within every third line of a field.

Frequency Response Measurements (FCC Multiburst or NTC-7 Combination VITS)

• Multiburst Flag Amplitude: Measured from back porch blanking to the center point of the flag top.
• Multiburst Amplitude: Measured as the peak-to-peak amplitude of each of the multiburst packets. Six results reported.

Waveform Distortion Measurements (FCC or NTC-7 Composite VITS)

• Line Time Distortion: Measured as the peak-to-peak amplitude change of the bar top, excluding the first microsecond and the last microsecond.
• Pulse-to-Bar Ratio: Measured as the peak amplitude of the 2T pulse, expressed as a percent of the bar amplitude.
• Short Time Waveform Distortion: Measured as a weighted function of time, the result is the peak deviation from flatness within 1 ms of the center of a bar transition. ANSI/IEEE Std.-511-1979, Section 4.4, Appendix B.
• Chrominance Nonlinear Gain Distortion: Measured as the peak-to-peak amplitude of the first (nominally 20 IRE) and last (nominally 80 IRE) chrominance packets in the 3-level chrominance signal, referenced to the peak-to-peak amplitude of the middle packet (nominally 40 IRE).
• Chrominance Nonlinear Phase Distortion: Measured as the difference between the largest and the smallest deviation in phase among the 3-level chrominance test signal subcarrier packets.
• Chrominance-to-Luminance Intermodulation: Measured using the 3-level chrominance test signal. Result is the maximum amplitude departure of a filtered part of the luminance pedestal from a part of the pedestal upon which no subcarrier has been superimposed.
• 2T Pulse K-Factor: Measured as the greatest weighted amplitude of a positive-going or negative-going echo-term half-wave which is within 1 μs before the 2T pulse leading edge half-amplitude point or within 1 μs after the 2T pulse trailing edge half-amplitude point. Result expressed as a K-Factor which is the ratio of the weighted amplitude of the echo-term half-wave to the sampled amplitude of the 2T pulse.

VIRS Setup (Reference Black)

• VIRS Chrominance Reference Amplitude: Measured from the blanking level included in the test signal to setup level.
• VIRS Chrominance Phase Relative to Burst: Measured as the amplitude of the VIRS chrominance packet, expressed as a percent of burst (or percent of bar if no burst).
• VIRS Luminance Reference: Measured as the difference between the VIRS chrominance packet phase and color burst phase.

Signal-to-Noise Ratio Measurements

• Measured from the blanking level included in the test signal to luminance reference level (nominally 50 IRE).
• Unweighted SNR: Measured as the ratio of bar amplitude to the unweighted RMS amplitude of the noise on a quiet line.
• Luminance Weighted SNR: Measured as the ratio of bar amplitude to the luminance-weighted RMS amplitude of the noise on a quiet line.
• Periodic SNR: Measured as the ratio of bar amplitude to the peak-to-peak value of the periodic noise.

Out-of-Service Measurements

• Long Time Distortion: Measured as the peak overshoot and settling time in a flat field test signal switched from 10% to 90% APL in less than 10 μs.
• Field Time Distortion: Measured as the peak-to-peak amplitude change of the 100 IRE field squarewave top. The first and last 250 μs are excluded. Expressed as a percent of the field squarewave amplitude.

Power Requirements

Mains Voltage Range - 87 VAC to 132 VAC or 174 VAC to 250 VAC.

Mains Frequency - 47 Hz to 63 Hz.

Power Consumption - 250 W.

Environmental

Operating Temperature Range - 0 °C to 50 °C ambient.

Safety - UL3111-1, CSA1010.1, EN61010-1, IEC61010-1.

Physical Characteristics