A08 - 25.09.2015
VTQ WMS HD - V/G-Mount TX
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6. Troubleshooting
Troubleshooting
2. No video signal
--> Explicit peak at receivers OLED display for level & quality
No?
--> Check BER: perfect if constant at 0.00 e-8
If BER > 0.00e-8 (z.B. e-7, e-6, etc.):
--> transmission systems works in line of sight (LOS)?
--> correct antenna (frequency range) in use?
--> Antenna(cable) properly connected?
If these 3 points are correct:
--> Change channel (more than one transmitter operates at the frequency?)
Should the problem prevail:
--> Test of identical transmitter with identical parameters
Should the problem prevail:
--> Contact service
3. Transmission range / Stability too low
(Please first exclude all possible error sources mentioned in point 6.1.)
A. Distance between TX and RX too large?
--> TX & RX in proper distance (LOS)?
B. Are the antennas aligned identically?
--> Standard: vertical polarisation
C. Booth receiver tuners displays identical parameters for RF level?
No:
--> are 2 identical antennas connected?
--> switch the antennas and connect them to the opposite connector
--> Check and - if necessary - exchange cables
If the error "sticks" to and moves with one antenna or cable, exchange the identified
error source
Yes:
--> If quality and bit error rate are bad, then check:
--> Correct antennas (frequency range) in use?
--> Antennas properly connected?
--> Too low distance between transmitter & receiver
--> Minimum 1 meter distance between TX & RX (ideal distance: 10m)
--> Is the frequency occupied by another transmission system?
--> Change channel
Should the problem prevail:
--> Test of identical transmitter with identical parameters
Should the problem prevail:
--> Contact service