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Fiber Optic
PICO MACOM
Series
Chapter 1
Introduction
1.
Introducing the Pico Macom PRR Optical Return
Receiver
OPTICAL RETURN PATH RECEIVER
RECEIVER 1
RECEIVER 1
RECEIVER 1
RECEIVER 1
POWER
RF ADJUST
ON LINE
OPTICAL
RF ADJUST
ON LINE
OPTICAL
RF ADJUST
ON LINE
OPTICAL
RF ADJUST
ON LINE
OPTICAL
The Pico Macom PRR Optical Return Receiver is a 1 RU (1.75 high x 19 inches wide) rack
mountable chassis with one, two, or four Optical Return Receivers included. The PRR-1 model
2 OPTICAL IN
1 OPTICAL IN
has one optical input and one RF output; the PRR-2 model has two optical inputs and two cor-
ON/OFF
RF
RF
RF
RF
responding optical outputs; the PRR-4 model has four optical inputs and four corresponding RF
90-264 VAC
outputs. The PRR-1, PRR-2, and PRR-4 models are otherwise the same and this manual refers
47-63 Hz
to the PRR to include all three models unless specifically stated as PRR-1, PRR-2, or PRR-4.
(PRR-4 is shown above.)
The PRR receives a wide range of optical carriers, from 1290 nm to 1600 nm, allowing use
with common 1310 nm and common 1550 nm wavelength transmitters. The optical input is
monitored and the front panel OPTICAL LED is lighted when a signal in the 1290 to 1600 nm
wavelengths is present.
Optical input connectors on the standard PRR are SC/APC type, common to the cable industry
and used for their low loss and back reflection. Other connectors, most commonly, FC/APC
type are used and may be available; see your sales representative for special ordering.
The PRR outputs RF signals within the 5 to 200 MHz range, using a cable industry standard F-
connector. Each RF signal taken from the optical input, effectively providing 1, 2 or 4 separate
receivers in one chassis. These signals may carry analog NTSC modulated carriers or QPSK or
QAM digital carriers or any mixture of carriers within the 5-200 MHz. range. Each RF output
of up to 45 dBmV may be attenuated using front panel adjustments.
There is no AGC in this unit. Each of the 2 or 4 outputs has a rear panel test port at approxi-
mately -20 dBc from the primary outputs, so you may monitor the RF signal without intruding
on the system operation.
The PRR is used typically in a hub to receive return path signals for the HFC nodes. The PRR
will operate satisfactorily with typical nodes from any manufacturer which can provide the
PRR's required input power level in the return path link.
CONTACT US
858.546.5050
www.picomacom.com
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