ND-20292

CHAPTER 2

APRIL, 1990

(DIP

 

 

WITCH)

4

SD

 

 

 

5

PB/ER

 

6

PIUPN

 

7

DH/DS

Table. 200-12

‘ID (Transmit data) (Pin 2)

PB (Peripheral

. .b.UW.. . . . . . . . . . . .

ER (Peripheral ready)

PR (Polarity

..rFx%w!~ ........

l?w&hmtY

DH (Data hard- ware controlled)

.. .. . . . .. . . . . . . . . . . . . . .

DS (Data so% ware controlled)

DTA-E

\I

*F

*OFF

ON

*OFF’

*nN

Switch Assignment

-.I

DTR ia to be provided by the data terminal equipment (DTE).

/TSiswcedhigh.

NOTE1

R

1

RTS is to be provided by the DATA terminal equipment (DTE).

 

PB kin indicator from modem) is forced hi h. NOTE 1

PB is to be arovided by the modem. NOTE 1

TD is forced high.

TD is to be provided by the DTE. NOTE 1

Detection of PB (ring indicator from modem) sets DSR high at

*Denotes the recommended switch setting, all switches are shipped in the OFF position.

NOTE 1: If these leads are open, they should be forced high.

I OFF *Normal Operation

SW3

. Switch SW2 is used to perform a remote data loop-back test. A character entered via the local DTE keyboard is echoed back from the remote DTA-E unit. This test verifies that the transmission paths between the DTE and the DTA-E unit are established. While testing, the switch is set to ON. The switch must be set to OFF for normal operation.

CTS

RTS 2 CTS TIME is defined as the time interval for sending the CTS (Clear To Send) signal after receiving the RTS (Request To Send) signal. This time parameter is disabled when SW3 position 8 is in the Full Duplex (FD) position.

200 - 40

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NEC nd-20292 manual Switch Assignment, SW3, Cts