JJF 1898-2021Calibration Specification for Waveform Monitors (English PDF)

Contents

• 1 Scope (1)
• 2 Overview (1)
• 3 Measurement characteristics (1)
• 3.1 Square wave calibration signal (2)
• 3.2 Voltage full scale (2)
• 3.3 Gain adjustment range (2)
• 3.4 Input/output gain ratio (2)
• 3.5 Amplitude frequency characteristics (2)
• 3.6 Filter characteristics (2)
• 3.7 Linear waveform distortion (2)
• 3.8 Non-linear waveform distortion (2)
• 3.9 Scan time error (2)
• 3.10 Return loss(2)
• 3.11 SDI eye diagram measurement (2)
• 4 Calibration conditions (2)
• 4.1 Environmental conditions (2)
• 4.2 Measurement standards and other equipment (2)
• 5 Calibration items and calibration methods (4)
• 5.1 Appearance and normal working inspection (4)
• 5.2 Square wave calibration signal (4)
• 5.3 Voltage full scale (5)
• 5.4 Gain adjustment range (6)
• 5.5 Input/output gain ratio(6)
• 5.6 Amplitude-frequency characteristics (7)
• 5.7 Luminance filter characteristics and low-pass filter characteristics (8)
• 5.8 Chroma filter characteristics (insertion loss and filter bandwidth) (9)
• 5.9 Linear waveform distortion and nonlinear waveform distortion (10)
• 5.10 Scan time error(10)
• 5.11 Return loss (10)
• 5.12 SDI eye diagram measurement (11)
• 6 Calibration result expression (12)
• 7 Re-calibration interval (12)