NEC Neax 2000 Ivs Remote Pim System Manual

 ND-46550 (E) CHAPTER 3
Pag e 63
Revision 2.0 Figure 3-38    Example of DTI Cable Connection via LTC Connector
43BA14318
AA11842
BA04217
AA017
17 RA 42 RB
18 TA 43 TB
19 44
20 45
MDF
PIM0
P DAIA
AP0LTC1
J
SEND
RECEIVE
TB TA RB
RA
TO CSU/
REMOTE PIM
34 33
32 T0-31
Á
[LT10]
À
À
LTC1 CONNECTOR
42 RB 17 RA
43 TB 18 TA
44 19
45 20
LTC (J)(P)
ÁMDF CONNECTOR
31 32 33 34 35 36 37 38 39
RA RB TA TB
T0 

CHAPTER 3 ND-46550 (E)  
Pag e 6 4
Revision 2.0
(2) When using CN connector on DAIA Card
Connect the cable to a CSU or directly to the Remote PIM via the CN connector on the DAIA/DAIC card as
shown in Figure 3-39. Connection of DAIC cards between the Main PIM and the Remote PIM is available in
the same manner as the DAIA-DIAB connection.
Figure 3-39    DTI Cable Connection via CN Connector (Main Site)
CSU MDF
TWISTED-PAIR
CABLE DAIA BWBMAIN PIM
(SHIELD TYPE) CN
DAIA/DAIC MDF
CN
TB
TA
RB
RA
TO CSU/REMOTE...

 ND-46550 (E) CHAPTER 3
Pag e 65
Revision 2.0
2.3.2 DTI Connection at Remote Site
Connect the cable to a CSU or directly to the Main PIM via the CN connector on the DAIB/DAIC card as shown
in Figure 3-40. Connection of DAIC cards between the Main PIM and the Remote PIM is available in the same
manner as the DAIA-DAIB connection.
Figure 3-40    DTI Cable Connection via CN Connector (Remote Site)
REMOTE PIM
CSU MDF
TWISTED-PAIR
CABLE DAIB/ BWB
(SHIELD TYPE)
MAX. 656 ft. (200 m) CN
DAIB/DAIC MDF
CN
TB
TA...

CHAPTER 3 ND-46550 (E)  
Pag e 6 6
Revision 2.0
2.4 MP Reset
After mounting all DAIC cards and connecting between the main site and the remote site, press the SW1 switch on
the MP card. 

 ND-46550 (E) CHAPTER 4
Pag e 67
Revision 2.0
CHAPTER 4 TROUBLESHOOTING
This chapter describes the method for fault diagnosis and troubleshooting when maintenance personnel detected
the fault occurrence by lamp indication on DAIA, DAIB, and DAIC cards. For other system faults, refer to the
Maintenance Manual. Table 4-1 shows contents of the fault and the remedial action on each lamp status.
Table 4-1  Remedial Action on Each Lamp Status
CARD NAME LAMP STATUS FAULT CONTENT REMEDIAL ACTION
PN-DAIA (DAIA)...

CHAPTER 4 ND-46550 (E)  
Pag e 6 8
Revision 2.0
PN-DAIB (DAIB) RUN lamp is not flashing Abnormal operation of 
DAIB cardÀReset MB switch.
(Down®Up®Down)
ÁIf fault cannot be cleared, 
replace card.
LINK lamp is not on Layer 2 link connection 
failure between DAIA and 
DAIBÀCheck whether cable between 
DAIA and DAIB is correctly 
connected. (Refer to Chapter 3, 
Section 2.3.)
ÁReset MB switch
(Down®Up®Down)
RED lamp is on PCM signal loss or Frame 
Alignment signal lossÀCheck whether cable between 
DAIA and...

 ND-46550 (E) CHAPTER 4
Pag e 69
Revision 2.0
PN-DAIC (DAIC) RUN lamp is not flashing Abnormal operation of 
DAIC cardÀReset MB switch.
(Down®Up®Down)
ÁIf the fault can not be cleared, 
replace card.
LINK lamp is not on Layer 2 link connection 
failure between DAIA and 
DAIBÀCheck whether cable between 
DAIA and DAIB is correctly 
connected. (Refer to 
CHAPTER 3, Section 2.3.)
ÁReset MB switch
(Down®Up®Down)
®Check whether cable between 
DAIC cards is correctly 
connected. (Refer to 
CHAPTER 3, Section...

CHAPTER 4 ND-46550 (E)  
Pag e 70
Revision 2.0
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