TVB59X RF Frequency Accuracy

Post date: Sep 28, 2010 5:59:45 AM

Software before V6.12.19 was ignoring under 100kHz unit. But V6.12.19

delivered to you on August 20 is using Hz unit.

For 474MHz, old and new version controls precisely but hardware may

have error due to oscillator accuracy.

Our oscillator has +/- 2.5 ppm error which is +/- 2.5 *474 Hz= +/-1185

Hz error range.

Broadcasting quality modulator use +/- 1ppm oscillator which may

reduce error range to +/-474 Hz. +/-1ppm oscillator is not used for

our modulator due to other issues like poor phase noise with small

dimension or big dimension and cost.