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2-10 P/N 480-0005-00-15
Chapter 2: Hardware Components
Rear (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 2-8 Tenor CMS960 Rear View - DC unit
• 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.
• 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.
• 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.
• Wrist Strap Ground Socket. Socket available in which to connect an ESD wrist strap for ESD protec-
tion.
CPU
2
4
8
3
7
26
15
TX/RX
1
2
3
4
Link
Config
1
2
3
4
Off On
Console
10/100
Ethernet
10/100
Ethernet
1
2
3
4
5
6
7
8
DS1
Link TX/RX
Link TX/RX
10/100
Ethernet
1
2
3
4
5
6
7
8
DS1
Link TX/RX
Link TX/RX
10/100
Ethernet
1
2
3
4
5
6
7
8
DS1
Link TX/RX
Link TX/RX
10/100
Ethernet
1
2
3
4
5
6
7
8
DS1
Link TX/RX
Link TX/RX
O
n
1
O
f
f
0
O
n
1
O
f
f
0
-48 RTN -48 RTN
A
B
Power Terminal
Circuit Breaker
Card
Slots
Supplementary
Earth Ground
Wrist Strap Ground Socket