參數(shù)資料
型號: U4221B-BFPG1
英文描述: Radio Controlled Clock Receiver
中文描述: 電波鐘接收器
文件頁數(shù): 10/12頁
文件大小: 169K
代理商: U4221B-BFPG1
U4221B
TELEFUNKEN Semiconductors
Rev. A1, 15-May-96
Preliminary Information
10 (12)
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 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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