Patton electronic 1090 user manual S1 Summary Table, Switch SET S1

S1 SUMMARY TABLE

Position	Function	Factory Default
S1-1	Clock Source*	On	}	Internal
S1-2	Clock Source*	On
S1-3	RTS/CTS Delay	On		Short Delay
S1-4	LDL Control	Off		Disabled
S1-5	Carrier Control	Off		Constant
S1-6	DTE Control of RDL	Off		Disabled
S1-7	DTE Control of LAL	Off		Disabled
S1-8	V.54 Enable/Disable	Off		Enabled

*See Note in SWITCH SET S1 (Below) for X.21 Clock Sources

Figure 3. Summary of DIP Switch Default Settings for S1

SWITCH SET S1

The configuration switches on S1 set clock source, RTS/CTS delay, carrier control, loopback tests. The default settings are summarized in Figure 3 (above).

S1-1 and S1-2: Clock Source

Switches S1-1 and S1-2 are set in combination to determine the source of timing for the Model 1090.

S1-1	S1-2	Setting
On	On	Internal
On	Off	Receive recover
Off	On	External transmit clock
Off	Off	Not a valid setting

NOTE: When an X.21 QuickConnect™ module is installed in

one or both base units, one base unit must be configured for receive recover clock source. The particular application will dictate which unit must be configured for receive recover clock source.

S1-3: RTS/CTS Delay

Switch S1-3 determines the amount of delay between the time RTS is activated and the 1090 activates the CTS.

S1-3	Function
On	Short delay (4-9 msec)
Off	Long delay (33-71 msec)

S1-4: LDL Control

Switch S1-4 determines whether the front panel switch can activate a Local Digital Loopback (LDL) diagnostic test.

S1-4	Function
On	LDL Control Enabled
Off	LDL Control Disabled

S1-5: Carrier Control

The setting for switch S1-5 determines whether the carrier is “constantly on” or “controlled by RTS”. This setting allows for operation in switched carrier or hardware handshaking applications.

S1-5	Setting
On	Controlled by RTS
Off	Constantly ON

S1-6: DTE Control of RDL

The setting for switch S1-6 determines whether DTE control of remote-digital loopback test is enabled or disabled. If DTE control is disabled, the RDL test can only be initiated by the front panel switch.

S1-6	Setting
On	DTE control enabled
Off	DTE control disabled

S1-7: DTE Control of LAL

The setting for switch S1-7 determines whether DTE control of local analog loopback test is enabled or disabled. If DTE control is disabled, the LAL test can only be initiated by the front panel switch.

S1-7	Setting
On	DTE control enabled
Off	DTE control disabled

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