Characterization Measurement Conditions

MC44BS374T1/374T1A Advance Information

Figure 6. Typical Audio Performance

15 Characterization Measurement Conditions

The following list shows the MC44BS374T1/374T1A default configuration unless otherwise specified.

•

Peak White Clip enabled

•

UHF oscillator ON

•

Sound and video modulators ON

•

Sound subcarrier frequency = 5.5 MHz

•

Sound Oscillator ON

•

Logic Output Port LOW

•

Picture-to-sound carrier ratio = 12 dB

•

Test pattern disabled

•

All test mode bits are ‘0’

•

Frequency from channel 21 to 69

RF Inputs / Output into 75ohm Load using a 75 to 50 ohm transformation. Video Input 1Vpp.

Audio pre-emphasis circuit enabled.

FM Audio Weighted Signal to Noise

46

48

50

52

54

56

58

471

521

571

621

671

721

771

821

871

Frequency (Mhz)

Typical

Minimum specification

Freescale Semiconductor, Inc.

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