Telos Zephyr Xstream - Manual (Page 293)

USER’S MANUAL
Section 13: Deep Tech Information and Troubleshooting 281
Are the Xstream‘s modes set properly?
The Xstream’s Transmit Mode and Receive Mode (both located in the second CODEC
menu) must be set to the proper conditions at each end in order for the system to work.
See Section 10 (Application Guide) and Section 11 (Detailed Menu Reference) for the
correct settings.
Sometimes cycling between modes can clear a decode problem.
Is audio properly connected and configured?
Are the Zephyr Xstream’s front panel Send bargraph meters indicating signal present at
a correct level? If not, check audio connections and cables. Is the Input level setting in
the AUDIO menu set correctly?
Condition: Audio In One Direction Only
This problem can be either analog or digital in nature. Unlike analog telephone lines, the two
directions of a digital line are mostly independent. It is possible to have a telephone channel
failure in one direction only. One of the following may serve to force you through the network
via a different path.
What happens if you try a different long distance carrier for the call?
If you try the call at 56 vs 64 (or vice versa)?
Try reversing the direction of the call?
Try placing a local call as a long distance call?
Are audio signals and connections OK?
It goes without saying – it’s got to be plugged‐in to work. If the problem is only with one
channel reversing A and B audio connections will help problem, isolation.
Do you have a good telephone network path in both directions?
Isolate the problem area by using the loopback techniques described above.
Remember, if unit can lock to itself via the far end unit's loopback, then the network
path is working.
Condition: Audio Distorted
Mixer models ‐ Is the AUDIO menu Ch "x" gain selection set correctly?
Applying a line‐level signal to a system configured for microphone levels will make for
some pretty awful distortion. Check the clip indicators on the first AUDIO menu.
Check the setting of the Proc X in AUDIO menus 2‐5. The Voice Medium and Voice High
settings can be very aggressive.
Non Mixer models
‐Is the AUDIO menu "Level In" selection set correctly? Are jumpers JP5 and JP6 set
properly for your application?
Gain Trim set OK?