Operating Instructions
ProTelevision Technologies
PT 5780 DVB-T Modulator
Instruction Manual
Revision 3.11
4-8
Status Window ‘b1’ – The Mode Status Window
This window shows the output configuration settings: IFFT, constellation, Code rate, network
mode (MFN or SFN), hierarchical mode (none, a1, a2 or a4)), and guard interval. An example of
a mode status window for a non-hierarchical modulator configuration is:
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MODE IFFT:8k, Cons:64QAM, CR-HP:1/2
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MFN Hier:None, Guard:1/32 b1
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Status Window ‘b2’ – The Preset Status Window
This window displays the number and name of the preset whose settings are currently loaded
into the modulator.
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PRESET
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No: 3, Name: "Preset Name" b2
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Status Window ‘c1’ (MFN config.) –TS Buffer fill indicator Status Window
This window is only available in MFN mode. It displays the number of transport stream
packages waiting in the input buffer (readings between 0 and 8 packages are considered
normal, the diaplayed valy may fluctuate if the bit rate of the applied stream is not constant).
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TS Buffer fill indicator
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2 packages c1
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Status Window ‘c1’ (SFN config.) – The SFN delay status display
This window is only available in SFN mode. It displays the
maximum network delay
value
extracted from the MIP (100ns resolution) and the delay margin (1 ms resolution). The delay
margin is defined as the time (in ms) that a mega frame is stored in the input buffer before the
network-wide timing dictates transmission.
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SFN Max Delay:350,000.0 ìs
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Margin: 258ms c1
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Status Window ‘c2’ – The SFN Setup Status Window
This window is only available in SFN mode. It displays the method used for controlling the
transmission parameters (control via TS control ON or OFF), the transmitter identification
number assigned to the modulator (TX ID), and the local delay offset value set via the <Signal>
à
<Output>
à
<SFN DELAY> sub menu.
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TS Control:ON, TX ID:55
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Local Delay 000,000.0 ìs c2
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Status Window ‘c3’ – The SFN Optional Data Status Window
This window is only available in SFN mode. It displays the optional time offset, frequency offset
and power offset data values received via the MIP. The DVB-T Modulator implements only the
Summary of Contents for PT 5780
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