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參數資料
| 型號： | U4224B-CFLG3 |
| 英文描述： | Time Code Receiver |
| 中文描述： | 時間碼接收機 |
| 文件頁數： | 14/17頁 |
| 文件大小： | 225K |
| 代理商： | U4224B-CFLG3 |
U4224B
TELEFUNKEN Semiconductors
Rev. A3, 02-Apr-96
14 (17)
Information Regarding US Transmitter
Station: WWVB
Frequency 60 kHz
Transmitting power 10 kW
Location: Fort Collins
Geographical coordinates: 40
Time of transmission: permanent.
40’N, 105
03’W
0
5
10
20
25
30
40
50
55
0
5
10
TIME FRAME
35
45
P0
40 20 10
8
4
2
1
P1
0
1
2
3
5
4
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20
P2
20 10
8
4
2
1
hours
hours
15
minutes
minutes
days
F
2
1
4
4
2
1
P
8
1
2
8
4
2
1
P
10
20
4
2
1
8
P
8
4
2
1
A
S
A
P
8
4
2
1
8
4
2
1
P8
4
2
1
P
P
UTI UTI
sign correctionyear
daylight savings time bits
leap second warning bit
leap year indicator bit
”0” = non leap year
”1” = leap year
TIME FRAME 1 MINUTE
( index count 1 second)
TIME FRAME
Frame reference marker
seconds
93 7529 e
Example:UTC 18.42 h
Modulation:
The carrier amplitude is reduced 10 dB at the beginning
of each second and is restored in 500 ms (binary one) or
in 200 ms (binary zero).
Time Code Format:
It consists of 1 minute time frames. A time frame contains
BCD–coded information of minutes, hours, days and
year. In addition there are 6 position identifier markers
(P0 thru P5) and 1 frame reference marker with reduced
carrier amplitude of 800 ms duration.
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