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參數(shù)資料
| 型號： | M52775FP |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | VIF, SIF, VIDEO, CHROMA, DEFLECTION FOR NTSC |
| 中文描述： | 資料表格，應力強度因子，視頻，色度，對于NTSC撓度 |
| 文件頁數(shù)： | 11/34頁 |
| 文件大小： | 262K |
| 代理商： | M52775FP |
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MITSUBISHI ICs (TV)
M52775FP
VIF, SIF, VIDEO, CHROMA, DEFLECTION FOR NTSC
11
ELECTRICAL CHARACTERISTICS TEST METHOD
P/N Video S/N
1. Input SG3 and measure the rms value of output signal at pin 57.
2. P/N is defined as follows:
Vf Video frequency characteristics
1. Input SG4 and set the frequency f2 to 44.75MHz so that the beat
element of 1MHz is output to pin 57.
2. Then set the applied voltage at pin 60 so that the beat element of
1MHz at pin 57 may be 100dB
μ
.
3. Decrease f2 to the level at which the beat element becomes 3dB
smaller than the element of 1MHz, and read the value at that
level.
Vin min. Input sensitivity
1. Decrease SG5 level until the video detector output is 3dB
smaller then the measured value of Parameter V3 “Video
detector output”.
Vin max. Maximum permissible input
1. Input 90dB
μ
SG6.
2. V
A
is the output level at pin 57. Increase SG6 voltage until the
output at pin 57 becomes 3dB smaller than V
A
. The input levell at
that time is the maximum permissible input.
μ
AFTN AFT detector sensitivity
V58H Maximum AFT voltage, V58L Minimum AFT voltage
See the following figure.
μ
AFTN is defined as follows:
IM Intermodulation
1. Adjust the applied voltage at pin 60 so that the lowest output
signal voltage at pin 57 is 2.2V.
2. Measure elements of 0.92MHz and 3.579545MHz of output at
pin 57.
3. IM is defined as follows:
ATT Maximum attenuation
1. Measure the element of 400Hz of output at pin 51.
2.
LIM Input limiting sensitivity
Decrease the input level of SG18. Measure the input level when the
element of 400Hz at pin 52 is 3dB smaller than V
0AFM
(S6:
Maximum AF output (6.0M)).
AMR
1. Vam is the element of 400Hz at pin 52.
2. AMR is defined as follows:
AF S/N
1. Measure the noise (20Hz to 100kHz) of output at pin 52.
2. AF S/N is defined as follows:
0AFmax
AF S/N=20log
MeV
GEAu EXT Audio GAIN
Input SG22 at pin 53, and measure the output V
P-P
at pin 49.
Input signal V
P-P
GAIN=20log
Output signal V
P-P
Cn1 Output signal amplitude 1
Cn2 Output signal amplitude 2
1. Input SS from pin 36 IN.
2. Measure output amplitude, Cn1 and Cn2, at pins 18 and 20
respectively.
V
0NEG
measured value (V
P-P
)
×
10
3
×
0.7
Measured value (mVrms)
P/N=20log
(dB)
P57
100dB
μ
1MHz
BW
3dB
P1
V1HN
V1LN
5.0V
3.0V
44.75Mz
46.75MHz
f0
f
f
μ
AFTN=
(5.0-3.0)
×
10
3
mV
f kHz
(mV/kHz)
2.2V
P57
IM=20logElElement of 0.92MHz
(dB)
V
0AFmax
Measured value
ATT=20log
(dB)
V
0AF
(mVrms)
Vam (mVrms)
AMR=20log
(dB)
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