Tektronix 1480R

The Tektronix 1480R is a high-performance NTSC waveform monitor engineered for precision video signal analysis in broadcast, post-production, and video equipment testing. This rackmount instrument delivers detailed waveform visualization, calibrated magnification to X50, and measurement accuracy for composite video signal integrity verification across professional video systems.

– Technical Specifications

Video Input
• NTSC composite video, 75 Ω nominal impedance (AUX input)
• Sync input accepts standard negative-going composite sync (3.5 V to 45 V) or 240 Hz tape recorder pulse (15 V to 45 V, 2.083 ms width, 4.166 ms period)
• PAL sync input accepts 200 Hz tape recorder pulse (15 V to 45 V, 2.5 ms width, 5 ms period)

Display & Analysis
• Waveform display: single lines, dual lines, or full-field overlay modes
• Magnification: calibrated up to X50 with automatic CRT brightening at high magnification
• Timebase foldback for pulse-to-bar ratio measurements and waveform comparison
• Line selector with three modes; supports lines 17 (NTSC) or lines 17/330 (PAL) in dual-field display
• Response modes: FLAT (0–5 MHz ±1%, 5–10 MHz ±1.5%), 4.43 MHz bandpass, 3.58 MHz bandpass
• DC restorer with slow (hum measurement) and fast (hum removal) clamping on back porch or sync tip

Measurement Performance
• Differential phase: 0.25° at any APL
• Differential gain: <0.25% at any APL
• Frequency response: ±1.0% (0–5 MHz), ±1.5% (5–10 MHz) on 1 VFS and 2 VFS ranges

CRT
• Type: 154-0718-00 (NTSC-ruled), 154-0718-01 (CCIR-ruled), 154-0718-05 (blank, optional)
• High writing-rate design for fast-rise, low repetition-rate signal capture

Power & Physical
• Mains: 100, 110, 120, 200, 220, or 240 VAC ±10%, 48–62 Hz
• Power consumption: max 75 W
• Rackmount configuration: 5.25 in height, 19.0 in width

– Key Features

• High-magnification CRT examination with automatic brightness compensation
• Flexible sync input support for NTSC and PAL tape recorder signals
• Selectable bandpass filtering at chroma subcarrier frequencies
• Precision DC restoration for accurate baseline measurement

– Typical Applications

• Video signal integrity analysis in broadcast facilities
• Post-production video quality verification
• Video equipment test and validation
• Composite signal waveform documentation

– Compatibility & Integration

Rackmount (R) configuration fits standard 19-inch broadcast equipment racks. Accepts external sync from standard video and tape recorder sources across NTSC and PAL standards.