User`s manual
100-M0056X2B    19 of 28 
www.cobham.com/gms 
(see figure 7a). To have the unit in the desired RF Power Mode on 
Power up, it is necessary to store settings in the Others window. If the 
settings are stored in the main page, the state of the RF Power Mode 
will not be saved. 
  Frequency switch – choices offered are enabled or disabled. These 
are the four frequency select switches discussed under section 5.1.1.3. 
If disabled the switches will not respond to changes (frequency changes 
could still be accomplish by changing the “RF FREQ (MHz”) field in the 
GMS MDLB control software. Enabling them allows the frequency to be 
changed when the switches are changed. Factory default enables the 
switches (keep in mind that you must click on the “Store All Setup 
Pages) for the choice to take place.  
  Video Filter Type-Pull down box offers various filter types for 
optimizing picture. The choices include: LPF OFF, LPF C, LPF Y, LPF YC. 
  Video Filter Frequency- Pull down box offers various filter 
frequencies for optimizing picture. The choices include: AUTO, 
12.15MHz, 10.6MHz, 9.45 MHz, 8.1 MHz and 6.75 MHz. 
  Transport Stream (see figure 8) – The transport stream menu displays the 
parameters of the current transport stream (of the transmitter). The fields are 
read/write-able. Normally the fields require no manipulation and should work quite well 
as defaulted from the factory. However, high end users may have a need to change the 
transport stream parameters. 
  Ctrl Port Baud Rate- The control port baud rate menu allows different baud rates to 
be selected when attached to the PC RS232 port. Some computers may need the baud 
rate adjusted for optimal communications 
  Factory Setup – The menu is for factory use only. 
Figure 6 - Select MPEG Encoder Profile 










