Motorola DSR-6400 用户手册

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页码 106
DSR-6400 Series 
35 
 
Modulation Menu
This menu is not available when the Manual Tune menu has the Input field set to ASI In or GigE 
In. That option is described on page 32.
This menu, together with the Manual Tune menu, allows the user to initially acquire a DigiCipher II 
signal. Press the  buttons until the MODULATION menu appears. Press ENTER to continue.
When the DCII-MAN option is selected, the user must also specify a Symbol/Code/Format 
combination. When the Mode field is set to DVBS2, the user must also specify a Symbol Rate (Msps). 
Mode Field
Default: DCII-AUTO
Press the4button until the cursor is at the Mode label, and press ENTER to move into the field. 
Press the  buttons to display the options: DCII-AUTO, DCII-MAN, or DVBS2. Select a 
mode and press ENTER to exit the field. 
Note: In order to receive a DVB-S2 modulated carrier, the unit must be set to DVBS2 mode and 
the correct Symbol Rate (Msps) must be entered in the Symbol field. In DCII-MAN mode, the 
correct Symbol Rate (Msps) must be entered in the Sym field, Code field, and Format field. If 
DCII-AUTO is selected, the unit searches through all available DC-II Symbol/Code/Format 
combinations to acquire a signal and then remains locked on that signal.
Symbol / Code / Format Fields
Default: 19.51 3/4 Comb
These three field are not available when the Mode field is set to DCII-AUTO. If the Mode field is set to 
DCII-MAN, press the 4 button until the cursor is at the Sym label and press ENTER to move into the 
field. Use the  buttons to scroll through the combinations. Each time a  button is pressed, the 
unit provides a three-field combination for the Sym field, Code field, and Format field. Select the 
combination provided by your programmer and press ENTER to confirm and exit the field. 
If the Mode field is set to DVBS2, the Symbol field can be edited to any value up to 33.000000 by 
using the arrow buttons (4) to edit each digit. 
   E          DCII-AUTO
MODULATION  Mode
   E         DVBS2      30.000000
MODULATION  Mode      Symbol
   E          8PSK-TC     01.000000
MODULATION  Mode      Symbol
   E         DVB-MAN    01.000000
MODULATION  Mode      Symbol
   E        DCII-MAN  19.51  3/4  Comb
MODULATION Mode     Sym  Code Format