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Adtran total access 1500 Manual

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10 Issue 1, May 2004 61180019L1-5A
• BANK (Bank System Major)
•PWR
In the T1 Mapping mode, the Total Access 1500
separately monitors the performance of each digroup
(A, B, C and D) and the bank. The T1 Mapping mode
assures that an alarm at the digroup level provides
appropriate central office and remote information.
The Total Access 1500 19-Inch Chassis provides
standard bank alarm outputs. Each of the alarms listed
below consists of a three-pin wire-wrap header that
connects to the SCU for alarm management. The SCU
provides the necessary electronic circuits for a NO/
COM/NC contact arrangement. The alarms are as
follows:
• Major-Visual Output
• Minor-Visual Output
• Major-Audible Output
• Minor-Audible Output
• AUX Output
The alarm configuration is selected as an SCU option
through the VT100 craft interface.
Connecting Alarm Outputs
Depending on the vendor equipment employed at the
CO, wiring external alarms from the Total Access 1500
19-Inch Chassis will vary slightly. The important
consideration is whether the external alarm equipment
requires a Normally Open (NO) or Normally Closed
(NC) circuit to pass an alarm. After determining what
the CO equipment requires, connection can be made to
the equipment from the Total Access 1500 19-Inch
Chassis, see Figure 8 for the location of alarm contacts.
NOTE
Each three-pin alarm header is wired the same
way for the specified alarm.
To connect alarm outputs to the Total Access 1500 19-
Inch Chassis, perform the following steps:
1. Determine whether the external alarm reporting
device uses a normally open or normally closed
circuit for alarm relay.
2. Using standard telco cross-connect wire, determine
and cut the length required to reach from the alarm
headers to the alarm-reporting device.
3. Using wire strippers, strip 1 to 1-1/2 inches from
both ends of the wire.
Figure 8. Alarm Contacts
4. Using a wire-wrap gun, wire wrap one strand to the
center pin (common) of the Total Access alarm
relay header, and the other strand to either the
“NO” (normally open) or “NC” (normally closed)
pin on the relay header.
5. Connect the two wires to the appropriate terminals
on the external alarm relay device being used.
Connecting Miscellaneous Alarm Inputs
There are four external alarm inputs that can be reported
to the SCU on the Total Access 1500 19-Inch Chassis:
Aux1 and Aux2 located on P13 and Aux3 and Aux4
located on
P18. Terminal A expects –48 VDC if an
alarm condition exists on the alarmed equipment.
Terminal
B supplies a –48 VDC source.
To connect an external alarm input to the Total Access
1500 19-Inch Chassis, perform the following steps:
1. Choose an alarm header set from
P13 or P18 on
the Total Access 1500 19-Inch Chassis backplane.
2. Using standard telco cross-connect wire, determine
and cut the length required to reach from the
alarmed piece of equipment to the chosen header.
3. Using wire strippers, strip 1 to 1-1/2 inches of
insulation from both ends of the wire.
Alarm Outputs (P1 3 )
Pin Number Description
1 AUX 1 A
2 AUX 1 B
3 AUX 2 A
4 AUX 2 B
5 Vis Maj (T1A) NO
6 Vis Maj (T1A) C
7 Vis Maj (T1A) NC
8 Vis Man (T1B) N O
9 Vis Man (T1B) C
10 Vis Man (T1B) N C
11 Aud Maj (T1C) NO
12 Aud Maj (T1C) C
13 Aud Maj (T1C) NC
14 Aud Min (T1D) NO
15 Aud Min (T1D) C
16 Aud Min (T1D) NC
17 AUX (BANK) NO
18 AUX (BANK) C
19 AUX (BANK) NC
20 PWR COM
21 PWR NO
Aux1
A B
Aux2
A B
Vis Maj
(T1A)
NO C NC
Vis Min
(T1B )
NO C NC
Aud Maj
(T1C )
NO C NC
(T1D)
NO C NC
Aux
(Bank)
NO C NC
PWR
P13
Aux1
A B
Aux2
A B
Vis Maj
(
NO C NC
(
NO C NC
(
NO C NC
Aud Min
(
NO C NC
Aux
(B
NO C NC
CO M
PWR
NO
P13
… 10 …


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