參數(shù)資料
型號(hào)： UPC1876GT
廠商： NEC Corp.
英文描述： US MTS DECODER
中文描述： 美國(guó)的多邊貿(mào)易體制解碼器
文件頁(yè)數(shù)： 23/40頁(yè)
文件大?。?/td> 309K
代理商： UPC1876GT
μ
PC1876
23
Data Sheet S11666EJ4V0DS00
5.4 SAP VCO Adjustment
Perform this adjustment with the filter unless otherwise recommended.
Be sure to adjust SAP VCO after
5.2. Filter adjustment
.
Usually, the filter and SAP VCO are adjusted simultaneously. For this reason, when this adjustment is performed,
the applications of the SAP VCO SETTING pin and the FILTER ADJUSTMENT pin are modified to add variable
resistor.
(1) Input no signal to the COMPOSITE SIGNAL INPUT pin and measure the DC voltage of the SAP SINGLE OUTPUT
pin.
(2) Input SAP signal (5 f
H
, no modulation) to the COMPOSITE SIGNAL INPUT pin. Adjust the variable resistor
connected to the SAP VCO SETTING pin so that the DC voltage of the SAP SINGLE OUTPUT pin may match
with the DC voltage measured in step (1).
5.5 List of Pin Settings in Adjustment
Pin Name
SAP1/2
ST/SAP
MUTE
FMONO
Adjustment
Stereo VCO Adjustment
–
–
–
–
Filter Adjustment
–
–
L (OFF)
–
Separation Adjustment
–
–
L (OFF)
H (OFF)
SAP VCO Adjustment
–
–
L (OFF)
–
Remark
–: Don’t care.
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