I ndoor RF unit ( I RFU)
Chapt er 1: Product descript ion
1- 18
phn- 2513_004v000 ( Oct 2012)
Indoor RF unit (IRFU)
This section describes the PTP 800 IRFU and its interfaces.
IRFU description
The PTP 800 indoor RF unit (IRFU) (
) converts signals between a modulated
intermediate frequency (IF) and radio band frequencies for transmission over a line-of-
sight link. The IRFU can be chosen as an alternative to the ODU to operate with one or two
PTP 800 CMUs.
Figu r e 1 0
Top and fr ont view of I RFU shelf ( w it h single t ransceiver and waveguide)
The PTP 800 IRFU platform supports the licensed bands and frequencies listed in
The IRFU chassis is designed for mounting in an indoor 19" rack. The 2.77 U height
chassis can house one or two field replaceable transceivers, where each transceiver
interfaces to a separate CMU via an intermediate frequency coaxial cable, or IF cable. The
IRFU also provides either one or two waveguide interfaces for connection to the antenna
or antennas. The waveguide interfaces have excellent voltage standing wave ratio (VSWR).
This reduces the amplitude of reflected signals passing up the waveguide which could
otherwise degrade the quality of the transmitted and received signals. When connected to
a suitably low VSWR antenna, this makes the IRFU ideal for operation with a wide range of
waveguide lengths.
Summary of Contents for PTP 800 Series
Page 1: ...Cambium PTP 800 Series User Guide System Release 800 05 02 ...
Page 40: ...Licensing requirements About This User Guide 10 phn 2513_004v000 Oct 2012 ...
Page 232: ...Limit of liability Chapter 3 Legal information 3 22 phn 2513_004v000 Oct 2012 ...
Page 322: ...Radiation hazard assessm ent Chapter 4 Reference information 4 90 phn 2513_004v000 Oct 2012 ...
Page 428: ...Replacing IRFU components Chapter 5 Installation 5 106 phn 2513_004v000 Oct 2012 ...
Page 630: ...Using recovery mode Chapter 7 Operation 7 78 phn 2513_004v000 Oct 2012 ...