Comtech EF Data SDM-650B - Manual (Page 114)

Operation SDM-650B Satellite Modem
4–12 Rev. 5
SWP_CNTR Note: This window is only displayed when Fast Acquisition has been
turned ON in the Utility menu.
Programs the sweep center frequency for the directed sweep function.
The sweep center frequency may be set in the range from +25000 to
-25000 Hz.
On entry, the current programmed setting is displayed with a flashing
cursor on the first character. Use [
← ] and [ → ] to move the flashing
cursor. Use [ ↑ ] and [ ↓ ] to increment and decrement the digit at the
flashing cursor. Select the sweep center frequency from -25000 to
+25000 Hz. Press [ENTER] to execute the change.
When in directed sweep, the value from the sweep monitor screen
(when the modem was last locked) should be entered for the sweep
center frequency.
SWP_RNGE Note: This window is only displayed when Fast Acquisition has been
turned ON in the Utility menu.
Programs the overall travel of the sweep width range during acquisition
in the directed sweep mode. The sweep width may be set from 0 to
50000 Hz. (When set at 50000 Hz, the modem is in fast acquisition
mode.)
On entry, the current programmed setting is displayed with a flashing
cursor on the first character. Use [
← ] and [ → ] to move the flashing
cursor. Use [ ↑ ] and [ ↓ ] to increment and decrement the digit at the
flashing cursor. Select a sweep range from 0 to 50000 Hz. Press
[ENTER] to execute the change.
When in directed sweep, the smaller the range, the faster the modem
will lock. This previous statement is true provided the sweep center
frequency is close.
SWP_DIR Note: This window is only displayed when Fast Acquisition has been
turned ON in the Utility menu.
Programs the direction of the sweep travel in the directed sweep mode.
On entry, the current programmed setting is displayed with the flashing
cursor on the first character. Use the arrow keys to select Forward (+) or
Reverse (-). Press [ENTER] to execute the change.