Patton electronic 1140ARC user manual Configuration Switch SET S1, S1 Summary Table

3.1.1 CONFIGURATION SWITCH SET “S1”

The DIP switches on S1 set data rate, clock source, async./sync. mode and carrier control method. The default settings are summarized in the table below. Following the table is a description of all possible S- 1 switch settings.

	S1 SUMMARY TABLE
Position	Function	Factory Default
S1-1	Data Rate	On	}
S1-2	Data Rate	Off		9,600 bps
S1-3	Data Rate	Off
S1-4	Data Rate	On
S1-5	Clock Source	On	} Internal
S1-6	Clock Source	On
S1-7	Async./Sync.	On		Async.
S1-8	Carrier Control	Off	Constantly On

S1-1 through S1-4: Data Rate Setting

Switches S1-1 through S1-4 are set in combination to determine the asynchronous and synchronous data rate for the Model 1140ARC.

S1-1	S1-2	S1-3	S1-4	Setting
On	On	On	On	1.2 Kbps
Off	On	On	On	1.8 Kbps
On	Off	On	On	2.4 Kbps
Off	Off	On	On	3.6	Kbps
On	On	Off	On	4.8 Kbps
Off	On	Off	On	7.2	Kbps
On	Off	Off	On	9.6	Kbps
Off	Off	Off	On	14.4	Kbps
On	On	On	Off	19.2 Kbps
Off	On	On	Off	28.8	Kbps
On	On	Off	Off	38.4	Kbps
Off	On	Off	Off	57.6	Kbps

S1-5 and S1-6: Clock Source

Switches S1-5 and S1-6 are set in combination to determine the transmit clock source for the Model 1140ARC.

S1-5	S1-6	Setting
On	On	Internal transmit clock
Off	On	Receive recover clock
On	Off	External transmit clock

S1-7: Asynchronous/Synchronous Mode

The setting for switch S1-7 determines whether the Model 1140ARC is in asynchronous or synchronous operating mode.

S1-7	Setting
On	Asynchronous
Off	Synchronous

S1-8: Carrier Control Method

The setting for switch S1-8 determines whether the carrier is

“constantly on” orcontrolled“ by RTS”. This setting allows for operation in switched carrier, multipoint and/or hardware handshaking applications.

S1-8	Setting
Off	Constantly On
On	Switched Carrier

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