Patton electronic 1082/144 Switch S1-4 Must be set to the ON position Reserved, S1-5, S1-6, S1-7

Switch S1-4: Must be set to the ON position (Reserved).

S1-4	Setting
On	Reserved

Switch S1-5: Asynchronous/Sync Operation

Use switch S1-5 to configure the Model 1082 for async/sync operation. Switch S1-5 must be set in the Off position. There is no other valid set- ting.

S1-5	Setting
Off	Async/Sync

Switches S1-6 and S1-7: System Clock Mode

Use Switches S1-6 and S1-7 to configure the 1082 or Model 1082/144 for internal, or receive recover clock mode.

S1-6	S1-7	Clock Mode	Description
On	On	Internal	System clock generated internally
Off	On	External (DTE)	System clock derived from termi-
			nal interface
On	Off	Receive Recover	System clock derived from the
			received line signal
Off	Off	Hardware Reset

A pair of Model 1082s communicate synchronously across the twisted pair line connection. Therefore, you must set these switches whether your application is async or sync. For X.21 or Async applications, configure one Model 1082 for internal clock mode and the other Model 1082 for receive recover clock mode.

Important

Switch S1-8: Response to RDL Request

Use Switch S1-8 to allow Model 1082 and Model 1082/144 to enter the Remote Digital Loopback diagnostic test when requested to do so by the far end Model 1082 or Model 1082/144. For example, when switch S1-8 is set to “ON”, it will enter RDL mode (See section 5.3, “Test Modes” on

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