NEC NEAX2400 system manual SW4D OFF

INSTALLATION

Key Setting on Circuit Cards

Table 4-4 Switch Setting Patterns for the DTI Card (Continued)

SWITCH NAME								SWITCH	SETTING	STANDARD	MEANING
								NUMBER		SETTING
								1	ON		Transmission Signal A Logic: Negative
SW4D									OFF	⋅	Transmission Signal A Logic: Positive
								2	ON		Receiving Signal A Logic: Negative
1	2	3	4	5	6	7	8		OFF	⋅	Receiving Signal A Logic: Positive
OFF
								3	ON		RMT Alarm Sending: Not to be sent out
									OFF	⋅	RMT Alarm Sending: To be sent out
									ON	⋅	Simultaneous Seizure Supervision: Not to be
											controlled
								4
											Simultaneous Seizure Supervision: To be con-
									OFF
											trolled
								5	ON		Data Link Control: MOS
									OFF	⋅	Data Link Control: BOS
								6	ON		Multiframe Selection: 12-Multiframe
									OFF		Multiframe Selection: 24-Multiframe
									ON		Signal Selection: AMI (Alternate Mark Inver-
											sion)
								7
											Signal Selection: B8ZS (Bipolar with 8 Zeros
									OFF
											Substitution)
								8	ON	⋅	Fixed
								1	ON	⋅	Impedance setting: 100 Ω
SW25									OFF		Impedance setting: 110 Ω
		1	2	3		4			ON		Transformer at Middle Point – Transmission:
											Ground
OFF								2
											Transformer at Middle Point – Transmission:
									OFF	⋅
											Open
								3	ON		Transformer at Middle Point Receive: Ground
									OFF	⋅	Transformer at Middle Point Receive: Open
								4	ON		Idle Code: To be sent out
									OFF	⋅	Idle Code: Not to be sent out

CHAPTER 4 ND-70185 (E)

Page 36

Revision 3.0