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參數(shù)資料
| 型號(hào)： | LA7170M |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | RF Modulator for UHF Band (Supports SECAM)(UHF（甚高頻）頻帶 RF調(diào)制器（支持SECAM）) |
| 中文描述： | 射頻調(diào)制器，用于UHF頻帶（支持SECAM制式）（超高頻（甚高頻）頻帶射頻調(diào)制器（支持SECAM制式）） |
| 文件頁(yè)數(shù)： | 2/8頁(yè) |
| 文件大?。?/td> | 109K |
| 代理商： | LA7170M |
No. 5675-2/8
LA7170M
Continued from preceding page.
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
[Picture]
Picture modulation
mp
V
IN
= 1 Vp-p, 100% white
V
IN
= 1.5 Vp-p, 100% white
V
IN
= 1 Vp-p,
100%
white
{1–(S/V)(3/7)}
×
100
V
IN
: 5-stair step, mp = 80%, at fourth step
V
IN
: 5-stair step, mp = 80%, at fourth step
V
IN
= 1 Vp-p, 100% white S10 : a
S9 : off
73
80
87
%
Maximum picture modulation
mp max
(S/V)
DG
88
93
98
%
SYNC compression
1.5
5
%
Differential gain
2
5
%
Differential phase
DP
–6
0
+6
deg
SECAM picture modulation
mp SCM
88
93
98
%
TSG picture modulation
mp TSG
70
80
90
%
TSG SV ratio
V/S
S9 : off
6.3/3.7
6.8/3.2
7.3/2.7
TSG horizontal period
TS
S9 : off
63.7
64.0
64.3
μs
TSG synchronization pulse width
HS
S9 : off
3.6
4.0
4.4
μs
TSG white signal width
HV
S9 : off
3.6
4.0
4.4
μs
TSG first white rising edge
TV1
S9 : off
22
24
26
μs
TSG second white rising edge
TV2
S9 : off
38
40
42
μs
[Sound]
FM sound modulation
Rank A
73
81
89
%
Rank B
ms FM
81
90
99
%
Rank C
90
100
110
%
Rank D
99
110
121
%
Rank E
109
121
133
%
Interchannel FM sound modulation ratio
ms FM
ms FM ratio with S10: off
0.93
0.98
1.03
FM sound distortion
THD FM
S10: b/off; A
IN
= 1 V
p-p
with 1-kHz sine
wave input
0.3
1.0
%
S10: b/off; V
IN
= 1 Vp-p color bar; A
IN
with
1-kHz sine wave input; ratio of level at A
IN
=
1 Vp-p to that at A
IN
= 0 Vp-p
Maximum modulation possible with S10:
b/off and sound distortion ratio within 3%
FM sound signal-to-noise ratio
S/NFM
43
55
dB
Maximum FM modulation
ms max
400
%
AM sound modulation
ms AM
S10: a; A
IN
= 1 Vp-p with 1-kHz sine wave
input
43
50
57
%
AM sound distortion ratio
THD AM
S10: a; A
IN
= 1 Vp-p with 1-kHz sine wave
input
0.5
2
%
S10: a; V
IN
= 1 Vp-p color bar; A
IN
with 1-kHz
sine wave input; ratio of level at A
IN
= 1 Vp-p
to that at A
IN
= 0 Vp-p
AM sound signal-to-noise ratio
S/N AM
42
47
dB
A
IN
= 1.66 Vp-p with 1-kHz sine wave input;
100% modulation: ±50 kHz; S10: b
Note: A
IN
= 1 Vp-p normally produces 60%
modulation.
Note: The AM sound items refer to direct AM detection from the sound carrier (fp + sound intercarrier). This device requires the special care associated with
all high-frequency devices.
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