Chapter 2: Hardware Components

Rear View (with DC power)

“CAUTION: This equipment is designed to permit the connection of the earthed conductor of the d.c. supply circuit to the earthing conductor at the equipment. See installation instructions.”

Figure 2-12Tenor CMS Rear View - DC unit

Circuit Breaker

 

 

On

Off

 

 

 

 

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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DS1

TX/RX Link

10/100 Ethernet TX/RX Link

8

7

6

5

4

3

2

 

 

1

 

 

 

 

Console

10/100 Ethernet

 

 

 

 

4

3

2

1

TX/RX Link

CPU

On Off 1 2 3 4 Config

 

4

3

2

1

8

7

6

5

 

 

 

 

 

 

 

 

 

2

 

 

 

 

Strain Relief Mount

Supplementary

Wrist Strap Ground Socket

 

Earth Ground

Power Terminal

 

Card Slots

 

 

•Circuit Breaker. There is one circuit breaker for each power connection; lettering on each one indicates which breaker controls which power receptacle connection. When you push the rocker to ON, the breaker will be closed (a red indicator shows the user that the contacts are closed). When you push the rocker to OFF, the contacts will open. To ensure all power is disconnected from unit, open both circuit breakers.

•Strain Relief Mount. The Strain Relief Mount enables you to connect the power cord strain relief to the unit. A power cord strain relief is a plastic device designed to avoid accidental power down of the Tenor CMS (i.e., if the power cord is accidentally pulled, the strain relief will relieve pressure put on the cord.)

•Power Terminal. Provides screw terminal wire connections to the -40 to -60 VDC power.

•Supplementary Earth Ground. A supplementary earth ground connection is provided.

•Card Slots. The rear of the cards requiring a transition module (T1, E1, DS1, CPU) is used for network connection. The quantity will vary depending upon the number of cards you have inserted.

•Wrist Strap Ground Socket. Socket available in which to connect an ESD wrist strap for ESD protec- tion.

2-14

P/N 480-0005-00-15