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Title

SCALE

SIZE

Sheet

DRAWN

CHECKED

ENG. APP.

Revision:

DO NOT COPY NOR

DISCLOSE TO ANY

THIRD PARTY

WITHOUT WRITTEN

CONSENT

of
1

IRT Electronics Pty. Ltd.

Drawing No.

COPYRIGHT

ARTARMON NSW AUSTRALIA 2064

A3

N.T.S.

5

DDA-3280

804066

Date:

6-Feb-2002 

 27a 

 27b 

 5b  

 11a 

 11b 

 9a  

 9b  

+5

+5

+5

+5

+5

+5

 16b 

 17a 

+5

+12

 15a 

 14b 

 14a 

 15b 

R

S

+12

+12

 18b 

 19b 

+5

+5

 19a 

 20a 

 20b 

+5

ARA IN

INPUT EQUAL

&

CLOCK RECOVERY

/pmark

OUTPUT

DRIVERS

U4

7064

KRONE

DC-DC

CONV

21a/b

23a/b

22a/b

25a/b

24a/b

26a/b

11

43

12

16

17

19

18

14

21

32

25

24

27

26

4

5

29

28

20

40

41

34

33

38

39

rec_clock

/mmark

/kpercent

xtal_in

ara_in

xtnl_co_req

gen_alarm

markpm

urgent_alarm

/ckd_pmark

/ckd_mmark

+5

U6

MAX704

2

3

7

44

/por

10

22

30

42

+5

31

5

2

3

3

5

+5

+12

1

2

3

U11

7812T

+12

+12

+12

 18a 

+5

+5

+5

+5

 5a  

 16a 

+12

+5

3

1

ais_disable

/loop

present

status

main_select

make_main

/del_make_main

+12

+12

SK2

1

2

3

4

/11/13

+5

1

16

15

2

/main_tally

6

+5

 31a 

+12V

+12V

11

9

13

N/C

1

14

0123456789

+5V

DLY

10

 31b 

4.296MHz

K1.1

K2.1

1

2

U5A

HC14S

3

4

U5B

HC14S

Q8

NPN

2

1

D2

LS4148

J1

K1.2

K1.3

2

1

R56

560

2

1

R57

560

2

1

R58

560

2

1

R59

560

2

1

R60

4K7

K2/1

GEN ALARM

2

1

R62

4K7

2

1

F1

4R7

2

1

F2

4R7

2

1

F3

4R7

2

1

F4

4R7

5

6

U5C

HC14S

PB1

/make_main_req

SW1

/inhib_co

LD1

/dataloss_led

LD2

/ais_led

LD3

/in_service_led

LD4

/standby_led

2

1

R61

4K7

2

1

R65

10K

2

1

X1

2

1

R69

10M

2

1

R70

1K

2

1

R81

10K

2

1

R80

4K7

2

1

R68

10K

2

1

R67

4K7

2

1

R79

4K7

2

1

R78

4K7

2

1

D7

1N4148

2

1

D6

1N4148

2

1

D5

1N4148

2

1

R76

4K7

2

1

R75

8K2

2

1

R71

4K7

D8-11

1N4004

D12-15

1N4004

2

1

D17

2

1

D18

COAX1

COAX2

COAX3

MON

2

1

R74

4K7

2

1

R73

8K2

2

1

R72

4K7

K1.3

K1.2

K1.1

POWER

2

1

D4

1N4148

J2

9

8

U5D

HC14S

LK1

1

2

C52

22p

1

2

C53

22p

1

2

C64

2.2u

1

2

C61

10u

1

2

C63

100n

1

2

C62

100n

2

1

D16

3xLS4148

1

2

C77

100n

1

2

C78

10u

1

2

C79

10u

1

2

C76

470u

2

1

R93

33

1

2

C72

1500

1

2

C71

1500

1

2

C73

100n

1

2

C74

100n

1

2

C57

100n

1

2

C58

100n

Q7

2N2369A

1

2

C70

100n

1

2

C69

100n

1

2

C68

10u

1

2

C67

100n

1

2

C66

10u

1

2

C54

10u

2

1

R77

10

2

1

R94

10R

2

1

R95

4k7

2

1

R96

75

2

1

R63

270

1

2

L40

RFC

K3/2A

2

1

R66

1K

1

2

C75

100n

1

2

C56

4u7

1

2

3

DD9

BAV99

2

1

R82

100K

1

2

C55

1p

K3/2

2

1

R101

10R

2

1

D19

LS4148

K3/2B

1

2

L42

IND

1

2

L41

IND

1

2

C65

100n

1

2

C1

N/C

1

2

C2

1u

J4

J5

1

2

C86

100n

1

2

C87

100n

1

2

C89

100n

AMPLIFIER

2MB DISTRIBUTION

1

2

3

JP2

IRT 

Communications 

www.irtcommunications.com

Содержание DDA-3280

Страница 1: ...0 832 575 26 Hotham Parade ARTARMON N S W 2064 AUSTRALIA National Phone 02 9439 3744 Fax 02 9439 7439 International 61 2 9439 3744 61 2 9439 7439 Email sales irtelectronics com Web www irtelectronics...

Страница 2: ...cs CCIT G 703 2048 kb s 5 ZDA 3280RH 6 Characteristics of signal 7 Coding Characteristics 7 G 703 Data Signal Format 7 Description of Operation 8 Handshake Operation 10 Pre installation 12 Operational...

Страница 3: ...e ZDA 3280RH dual rear assembly must be used When used as a line equaliser or distribution amplifier the DDA may be housed in any of IRT s standard Eurocard frames When used in pairs for handshake ope...

Страница 4: ...AY K 1 3 RELAY K 1 2 DDA SIGNAL PROCESSING RELAYS K 3 2RL1 2RL2 INPUT J 1 RELAY K 1 3 RELAY K 1 2 OUTPUTS J 4 RECLOCKING AIS DETECTION DATA FAIL DETECTION MAIN SBY LOGIC FOR K 3 Relay K 1 Power fail b...

Страница 5: ...loss AIS detect Module in service Module in standby Other Power requirements 28 Vac CT 14 0 14 or 16 Vdc Power consumption 170 mA 5 5 VA Temperature range 0 50 C ambient Mechanical Suitable for mounti...

Страница 6: ...module is able to provide an output free of the same defects and changeover inhibit switch is not activated on either module Priority logic The priority switching in normal mode follows non reverting...

Страница 7: ...rve the AC nature of the signal a coding system is used to ensure that a succession of either 1 s or 0 s in the original data does not produce a DC output The coding system varies according to the typ...

Страница 8: ...by any external signal present via pin 15a of the rear connector to the reset coil When power is applied to the DDA the logic circuit will cause the K 3 relay to be set If two DDA s are connected in h...

Страница 9: ...nts the AIS detection from operating the automatic changeover function when used in handshake configuration and prevents AIS from setting the general alarm output The AIS detection circuit will howeve...

Страница 10: ...rear assembly ZDA 3280RH This rear assembly makes all the necessary connections for both logic and data signals when two DDA s are inserted side by side in a 3 RU frame Individual alarm outputs are pr...

Страница 11: ...dition and so both will attempt to become Main As the P O R signal for each module will be slightly different for any two modules one will reach its operating mode first and will force the other modul...

Страница 12: ...care should be taken to ensure that the frame is connected to earth for safety reasons See frame manual for details Signal earth For safety reasons a connection is made between signal earth and chass...

Страница 13: ...required Only good quality 75 Ohm connectors and cable should be used The use of 50 Ohm BNC connectors may cause serious reflection problems with G 703 signals causing data errors In general cable run...

Страница 14: ...f connectors indicators and controls only MON ALLOW INHIBIT REQUEST AIS STANDBY CHANGE DATA LOSS IN SERVICE DDA 3280 N140 ZDA 3280RH 1 2 3 4 2SK 2 1J 2 MODULE 1 1J 3 MODULE 2 1J 4 1 2 3 4 2J 1 1J 1 IN...

Страница 15: ...ir The equipment should be properly packed for return observing antistatic procedures The following information should accompany the unit to be returned 1 A fault report should be included indicating...

Страница 16: ...DA schematic part 1 804066 2 DDA 3280 2 Mb DA schematic part 2 804066 3 DDA 3280 2 Mb DA signal path block diagram 804066 4 DDA 3280 2 Mb DA external logic block diagram 804184 1 ZDA 3280RH Handshake...

Страница 17: ...2 1 GEN ALARM 2 1 R62 4K7 2 1 F1 4R7 2 1 F2 4R7 2 1 F3 4R7 2 1 F4 4R7 5 6 U5C HC14S PB1 make_main_req SW1 inhib_co LD1 dataloss_led LD2 ais_led LD3 in_service_led LD4 standby_led 2 1 R61 4K7 2 1 R65 1...

Страница 18: ...1 2 C82 1 2 C81 1 2 C80 2 1 3 DD3 BAV70 2 1 3 DD5 BAV70 2 1 3 DD7 BAV70 2 1 R1 300R 3 1 2 RV1 100k 1 2 C3 100n 1 2 C4 33p 1 2 C6 100n 1 2 C7 10u 1 2 C8 100n 1 2 C11 10u 1 2 C12 100n T2 T4 6T L1 48u CT...

Страница 19: ...W AUSTRALIA 2064 A3 N T S 5 DDA 3280 804066 Date 6 Feb 2002 CLOCK AND DATA RECOVERY CLOCK MARK MARK AIS DETECTION DATA FAIL DETECTION MAIN SBY LOGIC FOR K3 AMPLIFIER 2MB DATA DISTRIBUTION BLOCK DIAGRA...

Страница 20: ...V 5V 5V 5V 5V 12V K2 Gen alarm Make main Inhibit Data loss LED AIS LED In service LED Standby LED 12V K1 5V __ __ __ __ 5V 5V SK2 KRONE Gen alarm Ext C O Req Gnd BLOCK DIAGRAM DDA 3280 EXTERNAL LOGIC...

Страница 21: ...1 32B 2SK1 1A 2SK1 2A 2SK1 3A 2SK1 4A 2SK1 5A 2SK1 6A 2SK1 7A 2SK1 8A 2SK1 9A 2SK1 10A 2SK1 11A 2SK1 12A 2SK1 13A 2SK1 14A 2SK1 15A 2SK1 16A 2SK1 17A 2SK1 18A 2SK1 19A 2SK1 20A 2SK1 21A 2SK1 22A 2SK1...

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