Operating the Equipment Locally — Output Menu
Page 4-70
Reference Guide: evolution 5000 E5780 and E5782 Encoder
ST.RE.E10135.4
4.8.8
Output Format = G.703 Output Menu
Introduction
The
G.703 Output
Menu
is selected from the
Output Menu
. The G.703 Interface Module
enables a Broadcast Application to interface an Encoder to a G.703 Telecommunication
Network. The card only provides a transmit source of a DVB service over a G.703 network.
See Figure 4.12 for the menu structure.
NOTE…
The G.703 card is only compatible with TANDBERG Television’s MkII G.703 Input card.
Table 4.27: G.703 Output Format Options
Selected Item
Options
Description
E3 (34.368 Mbit/s)
PDH Rate:
DS3 (44.736 Mbit/s)
Sets the overall G.703 Interface Module’s line rate.
E3 DS3
None None
G.832 M13
Framing:
c-bit
Sets the G.703 Interface Module’s E3 or DS-3 framing mode. The modes for
E3 are and. The selectable modes are dependent upon what the PDH Rate is
set to.
DS-3 Signal Level Out:
Only available for the DS-3 PDH Rate selection.
Allows the output G.703 DS-3 signal level to be increased if the receiving end
is placed some distance away (> 68 metres (225 Feet)). The receiving end
could be the TT6120 as in a Test Application or a G.703 Repeater. If selected
to High, the Transmitter pre-shapes the output signal amplitude.
Reed-Solomon:
Only available if the MUX rate has been set to 204 Byte Packet Mode.
Forward Error Correction requires 16 Bytes for Reed-Solomon encoding.
Interleaver:
Only available if Reed-Solomon is set to On.
The Reed-Solomon encoding pattern is arranged so that the information is
read in Row format and then read out to the Framing stage in Column format.
Randomizer:
Only available if Reed-Solomon is set to On.
The Reed-Solomon encoded pattern is Randomised according to the DVB-C
standard.
Master:
Generate an MPEG-2 transport rate that fits exactly into the
Telecommunications rate.
Slave:
Insert ‘stuff’ packets to fill up the Output Rate.
Clock Mode:
This option should be set to Slave
and is the ONLY setting to be used
in this application.
When sending MPEG-2 packets directly into Telecommunications framing, the output must be sent at a
constant fixed rate. This can be performed using two methods.
Direction:
This is always be displayed as Tx and indicates that the G.703 card portion of
the G.703 Interface Module is set to Tx mode.
Mode
This is always be displayed as MKII and indicates that the G.703 card portion
of the G.703 Interface Module is set to MKII mode.
Reset
This option is for TANDBERG Television’s use only and it is a method to reset
the G.703 card of the G.703 Interface Module.
