NEC NEAX 2000 IPS Installation Manual page 428

SWITCH NAME
JP1 (Jumper pin)
JP2 (Jumper pin)
JP3 (Jumper pin)
JPRI (Jumper pin)
JPR (Jumper pin)
JPT (Jumper pin)
NOTE 1: Set the groove on the switch to the desired position.
NOTE 2: When the power is on, flip the MB switch to ON (UP position) before plugging/unplugging the
circuit card.
NOTE 3: When the PBX is a clock source office, set the SW2-1 and SW2-2 on all the CCT/DTI/PRT cards
mounted in PIM0 to "OFF".
SWITCH SETTING
NUMBER POSITION
RIGHT
LEFT
RIGHT
LEFT
RIGHT
LEFT
LEFT
RIGHT
LEFT
RIGHT
LEFT
FUNCTION
Set the line impedance.
JP1 JP2
LEFT RIGHT
LEFT LEFT
RIGHT RIGHT
RIGHT LEFT
Balanced transmission
(For twisted-paire cable) (for T1/E1)
Unbalanced transmission
(For coaxial cable) (for E1)
Not used
Neutral grounding on the receiving line
is provided.
Neutral grounding on the receiving line
is not provided.
Neutral grounding on the transmitting
line is provided.
Neutral grounding on the transmitting
line is not provided.
– 412 –
PN-DTA (CCT/DTI/PRT)
LINE IMPEDANCE
100Ω (for T1)
110Ω (for T1)
120Ω (for E1)
75Ω (for E1)
Continued on next page
NWA-008841-001 Rev.5.0
CHECK
90ch3003.fm
JULY/15/2007