user manual

ND-20292
CHAPTER 2
APRIL, 1990
Table. 200-12
DTA-E Switch Assignment
(DIP
WITCH) 4
SD
‘ID (Transmit
data) (Pin 2)
PB (Peripheral
PB/ER
. .b.UW.. . . . . . . . . . . .
5
ER (Peripheral
ready)
PR (Polarity
6
PIUPN
. . rFx%w!~ . . . . . . . . .
l?w&hmtY
DH (Data hard-
ware controlled)
7
DH/DS .
. . . . . . . . . . . . . . . . . . . . . .
DS (Data so%
ware controlled)
\I
-.I
DTR ia to be provided by the data terminal equipment (DTE).
RTS is to be provided by the DATA terminal equipment (DTE).
1 *F /TSiswcedhigh. NOTE1
PB kin indicator from modem) is forced hi h. NOTE 1
R
*OFF
PB is to be arovided by the modem. NOTE 1
ON
TD is forced high.
*OFF’ TD is to be provided by the DTE. NOTE 1
*nN
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.
. 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
I
OFF *Normal Operation
switch must be set to OFF for normal operation.
SW3
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