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Preventive Maintenance and Fault-finding
Instruction Manual: evolution 5000 E57xx DSNG and DENG Voyager Encoder Page 6-9
ST.TM.E10076.3
Figure 6.3: Orientation of Fuse Carrier
If the replacement fuse also blows, do not continue. Disconnect the
equipment and contact Customer Services for advice.
6.5.4 Video Fault-finding
Fault Symptoms
Table 6.1: Video Fault-finding
Problem What to do
Video input lock error Check video input.
Video - wrong line standard Check which video format is selected.
VCM stopped Reboot.
Bad parameters Check set-up.
Breaks in Transmission
If a transitory break in transmission occurs then check the encoding mode
option of the Encoder (see Chapter 4, Operating the Equipment Locally).
In the standard delay, low delay, very low delay and mega low delay the
following are not seamless: encoding modes, bit-rate and GOP changes.
This is because the Encoder tries to maintain minimal end-to-end delay
(latency) and that means buffer sizes must be as small as possible. In the
standard delay, low delay, very low delay and mega low delay encoding
modes the buffer size is selected by the video bit-rate. Changing the
bit-rate changes the buffer size, requiring a reset of the coding process.
For reflex operation video bit-rate changes must be seamless as the
bit-rate varies continuously. All the seamless modes are seamless only for
video bit-rate changes. However, for some GOP changes operation can be
seamless, but this aspect is not guaranteed.
Noise Reduction
Where incoming picture material is corrupted by high frequency noise
(such as white noise) it is advisable to make use of the noise reduction
process. Noise reduction can be selected at the front panel.
AC Power Inlet
If required, use a small flat-bladed
screwdriver in the notch at the top
of the carrier to ease it out.
Fuse Carrier