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Preventive Maintenance and Fault-finding
Page 6-10 Instruction Manual: evolution 5000 E57xx DSNG and DENG Voyager Encoder
ST.TM.E10076.3
6.5.5 Audio Fault-finding
If having problems when using the Dolby E Pass-through coding mode
then refer to Annex G, Audio Modes, for information about using this
mode.
6.5.6 Mux Fault-finding
If there is no output from the ASI connectors, check the following:
1. The bit-rate - if it is too low then the video etc. is automatically
switched off.
2. The packet length - should be 188 or 204 bytes depending upon
configuration.
6.6 Rate Buffer Setting
The E5710/E5720 Encoders, when running in 4:2:2
1
mode, have two
software selectable rate buffer modes; small and medium.
When transmitting 4:2:2
1
mode into systems using the earlier System
3000 PRO IRD M2/PSR/3/422BAS then the rate buffer mode of the
Encoder must be set to 'small'.
However, when operating into an Alteia the rate buffer mode of the
Encoder must be set to ‘medium’ (default size).
When operating in mixed environments, both the Alteia and the Encoder
must be changed to small buffer mode.
NOTE…
Contact Customer Services for advice about changing the settings (see Preliminary Pages).
Table 6.2: Rate Buffer Settings
E5710/E5720 Setting Alteia Setting
PRO IRD SMALL -
Alteia only MEDIUM MEDIUM
Alteia and PRO IRD SMALL SMALL
6.7 Field/Frame Pictures
Some Receivers are unable to decode field pictures. Select Frames in the
Field/Frame Option. Does the fault clear? If not, contact Customer
Services.
1
4:2:2 is only available when software option M2/ESO2/422 is purchased.