Always double check that power is disconnected before using such devices. If possible, completely discon- nect the unit from any power source. If you have questions about laser safety procedures, please call Blonder Tongue before powering your product. Laser safety classes for the FRRA are as follows:...
Instruction Manual Description The FRRA is a fiber optic receiver integrated with the Blonder Tongue RMDA rack mount distribution amplifier. The FRRA may be used as a launch amplifier in a coaxial distribution network after networking with fiber. The fiber receiver provides a robust system for transferring 110 channels (depending on model) VSB/AM modulated signals over a single mode fiber.
FRRA Series Instruction Manual Figure 1 - End-to-End Link Figure 1 shows the end-to-end RF gain of the Transmitter/Receiver combination. The main factor that determines the end- to-end gain is the amount of light that reaches the receiver. A typical transmitter/receiver combination will have unity gain (0 dB) at a received optical power of 0 dBm (1 milliwatt).
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With the optical source and AC power connected, measure the RF signal level at “RF Loop” output connector. Choose the appropriate attenuator value to set this level to +5 dBmV, ± 5 dB. A Blonder Tongue model FAM-xx (Stock No.
FRRA Series Instruction Manual Maintenance Cleaning If the units need to be cleaned, avoid the use of all solvents and use low-pressure clean air to remove loose dirt. Use low-pressure clean air to clear the connectors of any debris. Dirty or scratched connector end faces will greatly reduce the unit’s performance.
The OSL can also be used to verify that the transmitter is indeed putting out light. Other common problems include using a transmitter as a receiver and vice versa, lack of continuity in the optical fiber, lack of power, or improper input levels. If problems persist contact Blonder Tongue’s Technical Solutions Department. Problems and Comments...
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