14
Switches S1-6 and S1-7: System Clock Mode
Use Switches S1-6 and S1-7 to configure the 1082/I or Model 1082/144/
I for internal, or receive recover clock mode.
Switch S1-8: Response to RDL Request
Use Switch S1-8 to allow Model 1082/I and Model 1082/144/I to enter the
Remote Digital Loopback diagnostic test when requested to do so by the
far end Model 1082/I and Model 1082/144/I. For example, when switch S1-
8 is set to “ON”, it will enter RDL mode (See section 6.3, “Test Modes” on
page 23) when requested to do so by the remote Model 1082/I and Model
1082/144/I.
Note
The Remote Digital Loopback (RDL) will not work for 144 kbps.
You must first set the units to 128 kbps or slower to use the RDL.
S1-6
S1-7
Clock Mode
Description
On
On
Internal
System clock generated internally
On
Off
Receive Recover
System clock derived from the
received line signal
Off
Off
Hardware Reset
Important
A pair of Model 1082/Is communicate synchronously
across the twisted pair line connection. Therefore,
you
must set these switches whether your application is
async or sync
. For Sync or Async applications, please
configure one Model 1082/I for internal clock mode and
the other Model 1082/I for receive recover clock mode.
S1-8
Setting
On
Response to RDL Request Enabled
Off
Response to RDL Request Disabled
