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參數(shù)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(shù)： | 13/17頁 |
| 文件大小： | 225K |
| 代理商： | U4224B-CFLG3 |
U4224B
TELEFUNKEN Semiconductors
Rev. A3, 02-Apr-96
13 (17)
Information Regarding British Transmitter
Station: MSF
Frequency 60 kHz
Transmitting power 50 kW
Location: Teddington, Middlesex
Geographical coordinates: 52
Time of transmission: permanent, excepting the first tues-
day of each month from 10.00 h to 14.00 h.
22’N, 01 11’W
0
5
10
15
20
25
30
40
50
55
0
5
10
35
45
year
day of
month
month
day
of
week
hour
minute
minute
identifier
BST
hour + minute
day of week
day + month
year
BST 7 GMT change
impending
TIME FRAME 1 MINUTE
( index count 1 second)
TIME FRAME
Parity
check
bits
8
4
2
1
8
4
2
1
8
4
2
1
1
2
1
8
4
2
1
2
1
4
2
1
1
8
4
2
4
2
1
4
8
2
1
0
0
500 ms
500 ms
switch over to
the next time frame
80
40
20
10
4
2
1
10
8
8
4
2
1
18
19
20
21
year
22
23
24
25
26
27
28
29
30
month
17
seconds
93 7528
0
1
Example:
March 1993
Modulation:
The carrier amplitude is switched off at the beginning of
each second for the time of 100 ms (binary zero) or 200
ms (binary one).
Time Code Format:
It consists of 1 minute time frames. A time frame contains
BCD–coded information of year, month, calendar day,
day of the week, hours and minutes. At the switch–over
to the next time frame, the carrier amplitude is reduced for
500 ms duration.
The prescence of the fast code during the first 500 ms at
the beginning of the minute in not guaranteed. The trans-
mission rate is 100 bits/s and the code contains
information of hour, minute, day and month.
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