' - '
- '
ϳ - CCITT BELL
- (-2,5... +1,3%)
19200 bit / s
14400 bit / s
12000 bit / s
9600 bit / s
4800 bit / s
2400 bit / s
1200 bit / s
600 bit / s
300 bit / s
- (+/- 0,01%)
2400 bit / s
1200 bit / s
600 bit / s
- 9, 10 11 ,
() ,
- CCITT V.22 bis
CCITT V.22
BELL 212A
(QAM)
- CCITT V.21 BELL 103
(FSK)
, - V.22 bis, V.22, 212
(ORIGINATE) - 1200 Hz
, (ANSWER) - 2400 Hz
- V.21
() - 1180
() - 980
() - 1850
() - 1650
- BELL 103
() - 1070
() - 1270
() - 2025
() - 2225
³ , - +/-0,01%
- 500 1800 Hz
- : 9, 10 11 ( , )
- : 10
- - -9 dB
- - -11 dB
- - 70 ms
- - 100 ms
- - 10 Hz
- - 650 ms
- > 13 dB
- 600 ³
- > 50 kOm
- > 25 V
- > 19 Hz
- 䳿 > 150 ms
2 (RS-232C)
.............................. +/- 3V - +/- 15V
........................... 3kOm - 7kOm
3-7 kOm...... 7,5V +/- 2,5V
Hayes- RS-232C
RS-232C
RS-232C/CCTTT V.24 ' ' . ( 쳺) RS-232C, (EIA), : DTE ' DCE.
RS-232C, . , ', () . (terminate) '. ' , , . ' (-). ³ ' .
³ ' , , . RS-232C, ' .
|
|
|
DTE, DCE. , ' (DTE- , DCE- ). , , DTE, (-).
RS-232C , , , , :
| 9 25 | |||
| DCD (Data Carrier Detect) | OUT | ||
| RD (Receive Data) | IN | ||
| TD (Transmit Data) , | OUT | ||
| DTR (Data Terminal Ready) | IN | ||
| GND (Signal Ground) | - | ||
| DSR (Data Set Ready) | OUT | ||
| RTS (Request To Send) | IN | ||
| CTS (Clear To Send) | OUT | ||
| RI (Ring Indicator) | OUT |
' RS232
1 2 3 4 5 6 7 8 9 A B C D 1 2 3 4 5
..................
................
E F G H I J K L M N J P 6 7 8 9
25 ' 9 '
| . | |||
| . | |||
| +3...+15 | ON | ||
| -...-15 | OFF |
| N | |||||||
| 1. | ' RS232 . ' . ϳ' ' . | ||||||
| 2. | , (Telix). | ||||||
| 3. | ALT-P ' RS232 2400.8N1 ( 9600 /, 8 , ! ), ' . | ||||||
| 4. | ' 1200.8N1 ' ( ). ' . | ||||||
| 5. | (PgUp) (PgDown) ASCII TELIX.DOC. 1 ( 2,3,4). | ||||||
| ' | , | . CPS | . CPS | . | |||
| 1200.8N1 | |||||||
| 2400,8N1 | |||||||
| 9600,8N1 | |||||||
| .1 . | |||||||
| 6. | ' ' . 2400.8N1, ', ' . | ||||||
| 7. | ASCII TELIX. DOC. 1 ' ' 2400 /. | ||||||
| 8. | ' ' 9600.8N1, ', ' . | ||||||
| 9. | ASCII TELIX. DOC. 1 ' ' 9600 /. |
|
|
|
:
- ;
- ;
- ;
- 5 6 1.;
- 3 4 5 6.;
- , .
:
1. ', .
2. '.
3. ' .
4. ' '.
5. .
6. .
7. .
8. , .
1. .. , .: , 1989, 416. 11. '.
2. . , .: Գ , 1992, 544.
7, /
