Tektronix 141A

The 141A PAL Generator is a source of high-quality television test signals for 625-line, 50-cycle field standard PAL color TV systems. Three operating modes provide PAL color bars, a 5-Step Staircase with fixed Average Picture Level (APL), and the sale Staircase with variable APL. 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 bot