NEC NEAX 2000 IPS Installation Manual page 477

SWITCH
NAME
JPS
(Jumper pin)
JPR
(Jumper pin)
JP
(Jumper pin)
JP1 (Jumper pin)
The figure in the SWITCH NAME column and the position of
umn indicate the standard setting of the switch. When the switch is not set as shown by the figure and
, the setting of the switch varies with the system concerned.
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.
SWITCH SETTING
NUMBER POSITION
RIGHT
LEFT
UP
DOWN
RIGHT
LEFT
DOWN
FUNCTION
Balanced transmission
(For twisted-pair cable)
TA is grounded on the transmission line
(For coaxial cable)
Balanced transmission
(For twisted-pair cable)
RA is grounded on the transmission line
(For coaxial cable)
Line impedance: 75 Ω
(For coaxial cable)
Line impedance: 120 Ω
(For twisted-pair cable)
Always set to DOWN
– 461 –
PN-30PRTA (PRT)
in the SETTING POSITION col-
Continued on next page
NWA-008841-001 Rev.5.0
CHECK
90ch3003.fm