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JOBAID
61181020L2-22A
0008
DS3 MX
CLEI: M3C3EECA_ _
DS3MX
1181020L2
LOCKOUT
ON LINE
APS
TEST/
ENABLE
POWER
STATUS
TEST
STATUS LEDs
POWER ●● OFF No power is present on the unit
● YELLOW Unit is Out-of-Service
● GREEN Unit is In-Service
STATUS ●● OFF Unit is Out-of-Service, Unassigned
● GREEN DS3 signal is present and synchronized
● RED Local alarm or local and remote alarm condition detected
● YELLOW Remote alarm condition detected
TEST ●● OFF Unit is not in loopback
● YELLOW Loopback active
LOCKOUT ●● OFF APS enabled
● YELLOW APS disabled due to INHIBIT
● RED APS is locked out due to three non-forced APS events within a
24-hour period
ON LINE ●● OFF Unit is stand-by unit (unit receives from network but does not
transmit to network)
● GREEN Unit is On-line unit (unit receives from and transmits to network)
APS PUSHBUTTON
■ When depressed simultaneously with the Test/Enable switch on the Off-line
unit, a protection switch is forced.
■ When depressed with the Test/Enable switch on the On-line unit, it toggles APS
status.
TEST/ENABLE BUTTON
■ When depressed alone, tests all unit LEDs (multicolor LEDs appear YELLOW).
■ When depressed simultaneously with the APS switch on the Off-line unit, a
protection switch is forced.
INSTALLATION PROCEDURE
■ Ensure the TA 3000 system chassis is properly mounted and wired for power.
BNC Adapter Module, P/N 1181004L1, is required for DS3 operation. The
adapter is mounted to connector J34, located in the lower right corner of the
backplane.
■ Ensure SCU is seated and receiving power.
■ Plug DS3 module into slot A or B of system chassis. Gently but firmly push the
DS3 Mux into one of the Mux slots, A or B, at the left end of the shelf.
Simultaneous thumb pressure at the top (above the POWER LED) and bottom
(below the Test/Enable button) of the unit will ensure a good seat of the DS3
pins into the backplane connector. Push the ejector tab up and closed against
the DS3 faceplate.
■ Allow the self-test LED sequence to complete. The self- test should take about
40 seconds. Upon completion, the POWER LED will be YELLOW, indicating the
unit is Out-of-Service and the STATUS LED will be OFF indicating the unit is in
the Unassigned (OOS-UA) state.
PROVISIONING THE DS3 MULTIPLEXER
To provision the DS3 Mux, connect a terminal emulator via the RS-232 (DB-9) connector on the faceplate
of the SCU. The terminal must be VT-100 or compatible and set for 9600 bps, 8 data bits, no parity and 1
stop bit. At the LOGON screen, enter the system password. Please note the default password is
“PASSWORD” (case sensitive) and can be changed upon initial login. Select Common A or Common B
from the Total Access Menu. Select option 2,
Provisioning, and press <enter>. The following table lists the
provisioning settings and their default values.
Options Settings Default
Framing M13, C-Bit, Auto detect Auto detect
Line Build Out Short, Long Short
Clock Source Local, Loop Loop
Service State In Service, OOS-Unassigned, OOS-Maint OOS-Unassigned
Linked Provisioning Enabled, Disabled Enabled
Line Code B3ZS (cannot be changed) B3ZS
■ Framing - sets the DS3 framing.
■ Line Build Out - set LBO to either Short or Long.
Short - cable length is less than 225 feet of 734A or equivalent coaxial cable or less
than 100 feet of Lucent 735 or equivalent coaxial cable.
Long - cable length is greater than 225 feet of 734A or equivalent coaxial cable or
greater than 100 feet of Lucent 735 or equivalent coaxial cable.
■ Clock Source - selects where the transmit clock derives its timing.
Local - derives its clock from an on-board oscillator.
Loop - derives its clock from the incoming DS3 data stream.
■ Service States - the following table lists the operations allowed in each state.
Service Report Report Switch to Allow Trib Ntwrk Allow Allow Allow
State Alarms TL1 PM Provide Forced Data Data Dwnld Prov Maint
Data Service Switch
on Fault into Unit
OOS, Un N Y N N AIS IDLE Y Y Y
OOS, Ma N Y Y Y Norm Norm Y Y Y
In Service Y Y Y Y Norm Norm N N N
■ Linked Provisioning - when enabled, automatically transfers provisioning changes made
to the enabled unit to the other unit.
■ Line Code - this value is hardcoded to B3ZS and cannot be changed.
WIRING OF DSX-1 DIGITAL TEST ACCESS LEADS
■ Wire wrap the T and R leads of the test system to the R and T pins of connector P23,
respectively.
■ Wire wrap the drain lead to the pin labeled S on P23.
■ Repeat the above two steps, substituting T1 for T and R1 for R.
DS3 MX
■ For a complete Installation and Maintenance Practice: 877.457.5007, Document #062. Please have your fax number available. ■