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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