Specifications

5/9/13 888-2857-001 3-59
WARNING: Disconnect primary power prior to servicing.
Section 3 Operation
Platinum VAX-C Series
Figure 3-38 DVB-T Setup Screen 6
Table 3-33 Xmtr Home>Exciter Home>Setup>DVB-T Modulator>Next x5
(screen 6)
Fields Explanation
Update NIT Flag Choices are Disabled or Enabled. Update NIT (Network Information Table)
Flag allows the update of the NIT packet with VAX-C RF frequency. This is
only selectable in MFN mode.
Adjust(ed)
Frequency
VAX-C RF frequency which is to be inserted in NIT. No value can be entered.
This is for display only.
Cell ID Priority Choices are Disabled, MIP (Mega-Frame Initialization Packet) Cell ID, or
Local Cell ID. Selects source of Cell ID to be inserted in TPS (Transport
Parameter Signalling) bits. Disabled: No Cell ID is inserted in TPS bits. MIP
Cell ID: value of Cell ID read from MIP packet. No value can be entered, this
is for display only. Local Cell ID: value of Cell ID to insert in TPS bits, range
is 1-65535.
Cell ID Displays value of Cell ID
Raised Cosine
Window
Choices are Bypass (no windowing), Minimum, Medium, or Maximum.
This entry enables Raised Cosine Window shaping between OFDM symbols to
reduce out-of-band distortion. The window lengths, a fraction of symbol
duration, depend on length of the guard intervals, as shown below.
If Guard Interval is 1/32, then MIN = 1/512, MED = 1/128, MAX = 1/64.
If Guard Interval is 1/16, then MIN = 1/512, MED = 1/128, MAX = 1/32.
If Guard Interval is 1/8, then MIN = 1/512, MED = 1/128, MAX = 1/16.
If Guard Interval is 1/4, then MIN = 1/512, MED = 1/128, MAX = 1/8.
TX ID Is the transmitter identifier in a single frequency network.
This will enable MIP packet optional parameters that are set for this
transmitter ID value. Transmitter ID range to be entered is 1-65535.