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參數(shù)資料
| 型號： | S1A0688C01-A0B0 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | TV SOUND MPX FOR TWO CARRIER SYSTEM |
| 中文描述： | 電視伴音盈豐的兩個航母系統(tǒng) |
| 文件頁數(shù)： | 13/20頁 |
| 文件大?。?/td> | 179K |
| 代理商： | S1A0688C01-A0B0 |
TV SOUND MPX FOR TWO CARRIER SYSTEM
S1A0688C01
13
ID DET
ID signal is FM modulated to second carrier (SIF2) with a 2.5kHz FM modulation after AM modulated to 55kHz
PILOT sub-carrier with a 50% AM modulation. ID DET part consists of 3 blocks: that is filter block for extracting pilot
carrier, AM detector block for AM detection of ID signal and digital block for detecting the frequency of provided ID
signal logically. In the filter block, audio signal is removed by HPF and pilot signal is extracted by the automatically
adjusted switch - capacitor BPF (band pass filter) with a center frequency of 55kHz. ID signal is extracted from the
pilot carrier in the AM detector block, then Digital block detects the frequency of ID signal, The ID signal can be
detected in the range shown as follow:
This block
’
s circuit is configured to reduce the blinking of the ID, and consequently has the following characteris-
tics: typ 1 sec and Max 1.5 sec delay when converting from Mono to Stereo, or to Bilingual. 0.3 sec delay when
converting from Stereo or Bilingual to Mono. Therefore, when changing the channels on your TV set, a minimum of
1.5 sec is needed for ID Detect Time.
Figure 1. Timing Diagram for Changing Channels from Mono to stereo or Bilingual
The ID Detect Block of the S1A0688C01 can momentarily malfunction if the signal is weak. Hence, we recommend
that you delay for at least 1 sec at Set MICOM before detecting the ID, if the ID changes at a fixed channel.
Figure 2. Timing Diagram when Channel is Fixed
ID
Low Off
Low On
High On
High Off
Stereo (150 Hz)
125 Hz
140 Hz
160 Hz
176 Hz
Bilingual (276 Hz)
237 Hz
255 Hz
300 Hz
312 Hz
T1
T2
Mono
Mono
Mono
Stereo or Bilingual
Stereo or Bilingual
Stereo or Bilingual
Broadcast
S1A0688C01
Set MICOM
T1: S1A0688C01
’
s ID Detect Time typ 1 sec, Max 1.5 sec
T2: When changing channels, set MICOM
’
s ID Detect Delay Time to a minimum of 1.5 sec.
T1
T3
Mono
Mono
Mono
Stereo or Bilingual
Stereo or Bilingual
Stereo or Bilingual
Broadcast
S1A0688C01
Set MICOM
T1: S1A0688C01
’
s ID Detect Time typ 1 sec, Max 1.5 sec
T3: When the channel is fixed, set MICOM
’
s ID Detect Delay Time to a minimum of 1 sec.
T3
Malfunction Skip
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| S1A0900X01 | AM/FM TUNER + MPX |
| S1A0900X01-A0B0 | AM/FM TUNER + MPX |
| S1A0900X01-S0B0 | AM/FM TUNER + MPX |
| S1A0901A01 | AM/FM TUNER + MPX |
| S1A0901A01-S0B0 | AM/FM TUNER + MPX |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S1A0900X01 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:AM/FM TUNER + MPX |
| S1A0900X01-A0B0 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:AM/FM TUNER + MPX |
| S1A0900X01-S0B0 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:AM/FM TUNER + MPX |
| S1A0901A01 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:AM/FM TUNER + MPX |
| S1A0901A01-S0B0 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:AM/FM TUNER + MPX |
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