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 1053 for async/sync operation. For synchronous
data rates set switch S1-5 OFF. For asynchronous rates set switch
S1-5 ON.
Switches S1-6 and S1-7: System Clock Mode.
Use Switches S1-6
and S1-7 to configure the 1053 for internal, or receive recover clock
mode.
S1-1
S1-2
Sync Data Rate
Async. Data Rate
On
On
128 kbps
115.2 kbps
Off
On
64 kbps
57.6 kbps
On
Off
56 kbps
76.8 kbps
Off
Off
32 kbps
0–38.4 kbps
S1-3
Setting
On
Reserved
S1-4
Setting
On
Reserved
S1-5
Setting
Off
Sync
On
Async
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
