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SW6/ 7
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
4.3 Modem Switches
Modem port switches for Female DB25 Modem Connector
Switch Bank S4, Switch:
1-On connects pin 4 of connector to A/S-4's input of
CLEAR-TO-SEND
2-On connects pin 5 of connector to A/S-4's input of
CLEAR-TO-SEND, for attaching DCE devices
3-On connects pins 25 on both terminal and modem connectors
to +5 volts DC.
4-On connects pin 19 of connector to A/S-4's input of
CLEAR-TO-SEND, for printers with busy on pin 19
5-On connects pin 20 of the connector to A/S-4's input
of CLEAR-TO-SEND, for devices with busy on pin 20
6-On connects pin 6 of connector to A/S-4's input of
CARRIER DETECT
7-On connects pin 8 of connector to A/S-4's input of
CARRIER DETECT
8-On connects pin 15 of connector to A/S-4's input of
Transmit Clock for synchronous operation
8
9
ON
ON
ON
ON
ON
OFF
ON
OFF
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
OFF
ON
OFF
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
10
BAUD RATE
ON
50
OFF
75
ON
110
OFF
134.5
ON
150
OFF
300
ON
600
OFF
1200
ON
1800
OFF
2000
ON
2400
OFF
3600
ON
4800
OFF
7200
ON
9600
OFF
19.2K
CHAPTER 4: Switches
NOTE: Baud Rate
selection has no
effect if Terminal
Speed Detect is
selected.
15
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