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GROUP DELAY PRE-CORRECTION
The specifications for a number of television systems state that the transmitted signal must be precorrected in terms of group delay to allow for the distortion produced by the IF filters in television receivers. CCIR Rep.624 recommends three curves which apply variously to the following systems: B/PAL, G/PAL, M/PAL and M/NTSC. The response of the three networks offered correspond to the three recommended curves in terms of group delay and are equalised to have an amplitude ripple of less than 0.2 dB over the video band. They are supplied in 40 pin encapsulated modules which occupy a board area of less than 11 sq. cm.
FP443A
Group Delay Pre-correction Curve Insertion Loss at 100 kHz End Of Passband Passband Amplitude Ripple Impedance Temperature Range Aqueous Washable Package B/PAL G/PAL-A < 1.5 dB 5.5 MHz < 0.2 dB 75 ohms 0C to 70C No DR00020B
FP443B
B/PAL G/PAL-B < 1.5 dB 5.5 MHz < 0.2 dB 75 ohms 0C to 70C No DR00020B
FP358C
M/PAL M/NTSC < 1.5 dB 5.5 MHz < 0.2 dB 75 ohms 0C to 70C No DR00020B
(c) Faraday Technology. As part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change without notice
FARA161d
Page 1 of 2
Dec-99(A)
PACKAGE DETAIL
Faraday Technology Ltd. Croft Road Industrial Estate, Newcastle, Staffordshire ST5 0QZ. England. FARA161d
Tel: Fax: Email: Web site: Page 2 of 2
+ 44 (0)1782 661501 + 44 (0)1782 630101 sales@faradaytech.co.uk http://www.faradaytech.co.uk Dec-99(A)

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