Black Box A/S-4 manual Modem Switches, Clear-To-Send

CHAPTER 4: Switches

SW6/ 7		8	9	10	BAUD RATE
	ON	ON	ON	ON	50
	ON	ON	ON	OFF	75
	ON	ON	OFF	ON	110
	ON	ON	OFF	OFF	134.5
	ON	OFF	ON	ON	150
	ON	OFF	ON	OFF	300
	ON	OFF	OFF	ON	600
	ON	OFF	OFF	OFF	1200
	OFF	ON	ON	ON	1800	NOTE: Baud Rate
	OFF	ON	ON	OFF	2000	selection has no
	OFF	ON	OFF	ON	2400	effect if Terminal
	OFF	ON	OFF	OFF	3600	Speed Detect is
						selected.
	OFF	OFF	ON	ON	4800
	OFF	OFF	ON	OFF	7200
	OFF	OFF	OFF	ON	9600
	OFF	OFF	OFF	OFF	19.2K

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

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