NEC 2000 IVS manual Loop Back 1 on Piano Key SW

PN-2DPCB (DPC)

(3) Switch Settings

			Switch Settings
SWITCH NAME	SWITCH	SETTING		FUNCTION	CHECK
	NUMBER	POSITION
SW1	1	ON		Loop Back 1 ON
(Piano Key SW)		OFF		Loop Back 1 OFF
			No. 0
OFF		ON	Circuit	Loop Back 2 ON
	2
		OFF		Loop Back 2 OFF
4
3	3	ON		Loop Back 1 ON
2		OFF		Loop Back 1 OFF
			No. 1
1
			Circuit
		ON		Loop Back 2 ON
ON	4
		OFF		Loop Back 2 OFF

SW0 (Dip SW)			ON		Forcibly turning the DTR signal to ON
	1
			OFF		The DTR signal from DTE goes through the card
ON	1 2 3 4 5 6 7 8
		2	ON	No. 0	Forcibly turning the RTS/C signal to ON
	OFF		The RTS/C signal from DTE goes through the card
					Circuit
	3		OFF		Not used
	4		ON		V.11 (X.21) interface
			OFF		V.24/V.28 (RS-232C) interface
	5		ON		Forcibly turning the DTR signal to ON
			OFF		The DTR signal from DTE goes through the card
	6		ON		Forcibly turning the RTS/C signal to ON
				No. 1
			OFF		The RTS/C signal from DTE goes through the card
				Circuit
	7		OFF		Not used
	8		ON		V.11 (X.21) interface
			OFF		V.24/V.28 (RS-232C) interface

The figure in the SWITCH NAME column and the position in 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: When the power is on, disconnect the cables before unplugging the circuit card, and connect the cables af- ter plugging the circuit card.

CHAPTER 4 ND-45504 (E)

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