Preventive Maintenance and Fault-finding
Page 6-10
Reference Guide: Voyager E5784 and E5788 HD DSNG Encoder
ST.RE.E10137.3
When transmitting 4:2:2
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 (SD Only)
Some Receivers are unable to decode field pictures. Select Frames in the
Field/Frame Option. Does the fault clear? If not, contact Customer
Services.
6.8
Power Supply Problems/Green LED on Front
Panel Unlit
6.8.1 Symptoms
WARNING...
DO NOT ATTEMPT TO SERVICE THE POWER SUPPLY UNIT AS OPENING OR REMOVING
COVERS MAY EXPOSE DANGEROUS VOLTAGES OR OTHER HAZARDS. REFER ALL
SERVICING TO SERVICE PERSONNEL WHO HAVE BEEN AUTHORISED BY TANDBERG
TELEVISION.
Use the following techniques to fault-find the Encoder according to the
observed symptom(s) when a power supply failure is suspected.
6.8.2
Power LED Unlit
If the Encoder Power LED is unlit, fault-find the problem as detailed in
Table 6.3: Power LED Unlit Fault-finding
Step
Action
If Result of Action is Yes…
If Result of Action is No…
1 Check the Stand-by Switch. Is the ‘I’ at
The problem lies within the Encoder.
Rotate the Stand-by Switch so that the