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9
Each setting represents one synchronous data rate and one asynchro-
nous data rate.
Note
If the S2-1 switch is positioned in the OFF position, the 128 kbps
sync data rate/0–38.4 kbps async data rate option is selected.
Switch S1-3.
Must be set to the On position (Reserved).
Switch S1-4: Must be set to the ON position (Reserved).
Switch S1-5: Asynchronous/Sync Operation.
Use Switch S1-5 to
configure the Model 1052 for async/sync operation. Switch S1-5 must be
set in the Off position. There is no other valid setting.
Switches S1-6 and S1-7: System Clock Mode.
Use Switches S1-6
and S1-7 to configure the 1052 for internal, or receive recover clock
mode.
S1-1 S1-2 Sync Data Rate Async. Data Rate
Off Off kbps or 19.2 kbps Reserved
On On 32 kbps Reserved
Off On 56 kbps Reserved
On Off 64 kbps Reserved
Off Off 128 kbps (see note) 0–38.4 kbps
S1-3 Setting
On Reserved
S1-4 Setting
On Reserved
S1-5 Setting
Off Async/Sync
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