Polytron ON 1000 Bedienungsanleitung Seite 10

2. Description
The new optical nodes with integrated 65 MHz return path (ON 1065) and without return path (ON 1000)
combine the superior proven technologies of both a Polytron RF amplifier and optical components. The two-
ways optical node ON 1065 delivers RF-signals (digital or analogue) as well as high-speed data services
over advanced hybrid fiber/coax (HFC) network.
With their modular design the Polytron ON 1065 and ON 1000 nodes can provide the full complement of
functions required by advanced networks.
 excellent linearity
 outstanding return loss
 extremely flatness
 low power consumption
 partial aluminium die cast housing
3. LED indicator
The optical input level is indicated level-dependent on a 3-colour LED. The green LED indicates the optimal
range from -6 to +2 dBm. The LED lights red starting up from a level of ≥ 3 dBm and indicates thereby the
too high input level. If there is none or a too low input level available, the LED lights orange.
3.1 LED indicator return path (only ON 1065)
The optical return path is indicated by a green LED.
4. Schematic Diagram ON 1065
Below diagram shows, that the incoming optical signal is led to an active optical receiver module.
Transformed into a RF-signal it is amplified and goes through an attenuator with following equalizer.
Afterwards the signal is amplified and led through the diplex RF-filter to the output.
The RF reverse path signal comes in over the output, it is supplied to the reverse optical transmitter module
over the return path module, the reverse attenuator and an amplifier. Transformed into an optical signal it is
led to the optical fiber output.
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