LC-32D12EA (serv.man2) - Sharp TV Service Manual (repair manual). Page 22

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22
LC-32D12E(A)
LC-40F22E(A)
2.1.General description of Samsung DTOS403LH122X:
The Tuner covers 3 Bands(from 48MHz to 862MHz for COFDM, from 45.25MHz to 863.25MHz for CCIR 
CH). Band selection and Tuning are performed digitally via the I2C bus.
2.2.Features of DTOS403LH122X:

Receiving System: This TUNER is designed to cover the air channels in VHF and UHF, compliant 
with DVB-T standard. and It covers all Analog channels from 48.25MHz to 863.25MHz

Receiving Channel (Digital, Center frequency):

VHF Low CH. E2 ~ S10 ( 50.5MHz ~ 170.5MHz )

VHF High CH. E5 ~ S41 ( 177.5MHz ~ 466 MHz )

UHF CH. E21 ~ E69 ( 474 MHz ~ 858 MHz )

Receiving Channel (PAL, Picture carrier frequency):

VHF Low CH. E2 ~ S10 ( 48.25MHz ~ 168.25MHz )

VHF High CH. E5 ~ S41 ( 175.25MHz ~ 463.25MHz )

UHF CH. E21 ~ E70 ( 471.25MHz ~ 863.25MHz )

Intermediate Frequency:

Digital(center) DVB-T (36.167 MHz)

Digital(center) DVB-C (36.125 MHz)

Analog(picture) 38.9 MHz

Input Impedance
: 75Ω, Unbalanced

Band Change-Over System
: PLL Control System

Tuning System
: Electronic Tuning System With PLL

Internal(or External) RF AGC function :Built in wideband AGC detector with 6 programmable take-
over points

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