CHAPTER 2 INSTALLATION

INSTALLATION PROCEDURE

SWITCH NAME

SWITCH

SETTING

FUNCTION

CHECK

NUMBER

POSITION

JPS (Jumper pin)

 

RIGHT

Balanced transmission

 

 

 

(For twisted-pair cable)

 

 

 

 

 

 

 

LEFT

TA is grounded on the transmission line

 

 

 

(For coaxial cable)

 

 

 

 

 

JPR (Jumper pin)

 

UP

Balanced transmission

 

 

 

(For twisted-pair cable)

 

 

 

 

 

 

 

DOWN

RA is grounded on the transmission line

 

 

 

(For coaxial cable)

 

 

 

 

 

JP (Jumper pin)

 

RIGHT

Line impedance: 75 Ω

 

 

 

(For coaxial cable)

 

 

 

 

 

 

 

LEFT

Line impedance: 120 Ω

 

 

 

(For twisted-pair cable)

 

 

 

 

 

JP1 (Jumper pin)

 

 

 

 

 

 

DOWN

Always set to DOWN

 

The figure in the SWITCH NAME column and the position of in the SETTING POSITION col- 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.

NOTE 3: To receive a clock signal from MP card, set the SW-1 and SW-2 on all the DTI cards to “OFF”.

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NWA-008869-001 Rev.1.0

 

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NEC NWA-008869-001 JPS Jumper pin, Balanced transmission For twisted-pair cable, Line impedance 75 Ω For coaxial cable