Tektronix 141A
PAL Generator
Description
The Tektronix 141A is a PAL Generator.
The 141A PAL Generator is a source of high-quality television test signals for the 625-line, and the 50-cycle field standard PAL color TV systems. The three operating modes provide PAL color bars, and a 5-Step Staircase with a fixed Average Picture Level (APL), and with the sale Staircase that has a variable APL.
Key Points
Modulated Staircase: Fixed or Variable APL
Vertical Insertion Test Signal: Modulated staircase - Field 1, Field 2, or both
Specifications
PAL Color Bars: EBU bars - 75% amplitude, 100% saturated, 0% setup, 100% white reference (75% white reference also selectable); BBC 95% bars - 75% amplitide, 100% saturated, 25% setup, 100% white reference; 100% bars - 100% amplitude, 100% saturated, 0% setup, 100% white referente
Modulated Staircase: Fixed or Variable APL
Vertical Insertion Test Signal: Modulated staircase - Field 1, Field 2, or both
