SYSTEM RACK

6.On the top Backplane board, the following measure- ments should be referenced to ground (pins 9, 10, 41 or 42).

NOTE: The four readings should be ±1 ohm from the test specifications.

7. Test is completed.

Center Pin of

Ohms

J5

37.5

J6

37.5

J23

19.2

J24

19.2

SHELF 2

J5

J6

J23

J24

J2

J1

 

 

 

 

 

 

 

J3

J4

J25

J26

 

 

J22

 

 

J21

 

 

SHELF 1

J5

J6

J23

J24

J2

J1

 

J4

J25

J26

 

 

 

J3

 

 

NIM SHELF

J20

J103

 

J102

J101

 

J100

 

 

 

 

 

 

P33

P33

J22

 

J21

 

J20

POWER SUPPLY

Figure 4-1 2-SHELF 3000 SERIES SWITCH BACKPLANE CABLES

P

C

C

C

C

C

C

D

D

L

L

W

W

T

I

I

I

I

C

C

C

C

E

E

A

A

M

M

M

M

M

M

M

M

M

M

M

M

M

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHELF

2

 

 

 

 

 

 

16

17

18

19

20

21

22

23

24

25

26

27

P

N

N

V

V

S

S

T

T

T

T

D

D

T

e

e

T

T

N

N

I

I

I

I

I

I

M

t

t

M

M

M

M

M

M

M

M

M

M

 

N

N

1

2

 

 

 

 

 

 

 

 

 

I

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHELF

1

 

 

 

 

 

 

M

M

 

 

 

 

 

 

 

 

 

2

3

4

5

6

7

8

9

10

11

 

0

1

POWER SUPPLY

Figure 4-2 2-SHELF 3000 SERIES SWITCH SETUP

4-6