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FiberLink 1900 Series User’s Manual
FiberLink 1900 Series
Interface Troubleshooting
Some troubleshooting pointers to consider when this system is not operating properly are:
XA-1900, XA-1903
1 . Is operating power present and connected to the proper pins on the power connec-
tor?
2 . Is an IRIG signal present at the input connector of the unit?
3 . Is the input attenuator set properly?
4 . Is the impedance switch on the XA-1903 set properly?
RA-1900
1 . Is operating power present and connected to the proper pins on the power connec-
tor?
2 . Is the correct fiber optic cable connected between the transmitter and receiver?
3 . Is the correct size fiber being used for the particular transmitter/receiver combination?
4 . Is the attenuation of the fiber optic cable within the range of the system’s loss budget
specifications?
5 . Is an IRIG signal present at the output connector of the unit?
6 . Is the output attenuator set properly?
If all of the above is correct and the system is still not operating, please contact
the Customer Service Department for further assistance .
Overall System Checkout and Troubleshooting Techniques
Occasionally, during the installation of a fiber optic system, difficulties arise that are the
result of factors beyond the control of the installer . It is to simplify the task of the installer
that the following general checkout procedure is included .
A. Check Transmitter or Transmit Section of a Transceiver
1 . Is operating power (DC, AC, Voltages) correct?
2 . Are the correct pins on the connector or terminal block being used?
3 . Is the correct signal level present at transmitter input?
4 . Is the optical connector on the transmitting LED clear of any obstruction or minute dirt
particles?
5 . Does the fact that the power ground and signal ground of many systems are common,
matter?
Interface Troubleshooting | Overall System Checkout
