Toshiba 28YT56, Service Manual

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50
IF
The IF-PLL demodulator uses an internal VCO (no external LC-circuit required) which is calibrated by
means of a digital control circuit which uses the clock frequency of the m-Controller as a reference.
The required IF frequency for the various standards can be set
S-No OSD Description MinMax Def.
039 IF PLL demodulator frequency 58P75; 45P75;
38P9 ; 38P0 ;
33P4 ;
33P9/43P008
38P9
OFR
S-No OSD Description MinMax Def.
040 OFR Option Enable Frequency in Install Menu 0..1 1
FFI
Fast filter IF-PLL; increased time constant & normal time constant
S-No OSD Description MinMax Def.
041 FFI Fast filter IF-PLL 0, 1 0
BS1
S-No OSD Description MinMax Def.
042 BS1 Tuner Band VHF1 0..15 1
BS2
S-No OSD Description MinMax Def.
043 BS2 Tuner Band VHF3 0..15 2
BS3
S-No OSD Description MinMax Def.
044 BS3 Tuner Band UHF 0..15 4
CB
S-No OSD Description MinMax Def.
045 CB Tuner Control Byte 0..255 142