S1 Summary Table, S2 Summary Table | Patton electronic MODEL 1075

3.1.1 Configuration Switch Set “S1”

The switches on Switch S1 set V.54 Test Functions. Default settings and detailed descriptions for each switch are shown below.

S1 SUMMARY TABLE

Position	Function	Factory Default

S1-1 thru S1-7	Not Assigned	Off

S1-8	V.54 Test Functions	Off	Enabled

Switches S1-1 through S1-7: Not Assigned

Switch S1-8: V.54 Test Functions

Switch S1-8 enables or disables the Model 1075 V.54 loopback test modes.

S1-8	Activation	Description
Off	Enabled	V.54 test functions enabled
On	Disabled	V.54 test functions disabled

3.1.2Configuration Switch Set “S2”

The switches on Switch S2 set data rates, clock source, carrier control and front panel switch operation. Default settings and detailed descriptions for each switch are shown below.

S2 SUMMARY TABLE

Position	Function	Factory Default

S2-1	Data Rate	On	}	56 kbps
S2-2	Data Rate	Off	}	56 kbps
S2-3	Clock Mode	On	}	Internal
S2-4	Clock Mode	On	}	Internal
S2-5	Carrier Control	Off		Forced On
S2-6	Not Assigned	Off

S2-7	Not Assigned	Off

S2-8	Front Panel Switches	On		Enabled
	5

Switches S2-1 and S2-2: Data Rate

Switches S2-1 and S2-2 are set in combination to determine the synchronous data rate for the Model 1075.

S2-1	S2-2	Setting
Off	On	32 kbps
On	Off	56 kbps
On	On	64 kbps

Switches S2-3 and S2-4: System Clock Mode

The setting for switches S2-3 and S2-4 determines the transmitter clocking mode for the Model 1075.

S2-3	S2-4	Clock Mode	Description
On	On	Internal	System clock
			generated internally
On	Off	External (DTE)	System clock derived
			from terminal interface
Off	On	Receive Recover	System clock derived
			from the received line
			signal.

Switch S2-5: Carrier Control
S2-5	Carrier	Description
Off	Always On	Transmitter is always ON
On	Follows terminal	Transmitter controlled by “Control”
		signal from X.21DTE (or by
		“Indication” signal from X.21 DCE)

Switches S2-6 and S2-7: Not Assigned

Switch S2-8: Front Panel Switch Enable/Disable

Switch S2-8 determines whether the front panel switches may be used to perform diagnostic functions.

S2-8	Activation	Description
On	Enabled	Front panel switches may be used
		to activate/terminate diagnostics.
Off	Disabled	Front panel switches will have no
		effect on operation of the unit.
		6