Com pact m odem unit ( CMU)
Chapt er 1: Product descript ion
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phn- 2513_004v000 ( Oct 2012)
Compact modem unit (CMU)
This section describes the PTP 800 CMU and its interfaces.
CMU description
The PTP 800 compact modem unit (CMU) (
) is mounted indoors and provides the
Ethernet interface to the network. It converts the Ethernet frames to a data stream which
then modulates an intermediate frequency (IF) signal which is sent to the radio frequency
unit (RFU), either an outdoor unit (ODU) or an indoor radio frequency unit (IRFU).
In the other direction, the CMU demodulates a similar IF signal from the RFU and
reconstructs Ethernet frames to send to the network. Both IF signals are carried over a
coaxial IF cable connecting the CMU to the RFU. The CMU also provides power to the
ODU and this is also carried over the coaxial cable.
The IRFU is powered separately.
The CMU is mounted on a shelf, on a wall (using the provided bracket), or in a standard
19 inch rack (using the optional CMU rack mounting kit). It is ideally suited to applications
where space is limited.
Figu r e 3
PTP 800 CMU
Содержание PTP 800 Series
Страница 1: ...Cambium PTP 800 Series User Guide System Release 800 05 02 ...
Страница 40: ...Licensing requirements About This User Guide 10 phn 2513_004v000 Oct 2012 ...
Страница 232: ...Limit of liability Chapter 3 Legal information 3 22 phn 2513_004v000 Oct 2012 ...
Страница 322: ...Radiation hazard assessm ent Chapter 4 Reference information 4 90 phn 2513_004v000 Oct 2012 ...
Страница 418: ...Replacing IRFU components Chapter 5 Installation 5 96 phn 2513_004v000 Oct 2012 Figure 1 1 0 IRFU components example ...
Страница 428: ...Replacing IRFU components Chapter 5 Installation 5 106 phn 2513_004v000 Oct 2012 ...
Страница 552: ...Configuring for FIPS 140 2 applications Chapter 6 Configuration and alignment 6 124 phn 2513_004v000 Oct 2012 ...
Страница 630: ...Using recovery mode Chapter 7 Operation 7 78 phn 2513_004v000 Oct 2012 ...
Страница 648: ...Glossary I V phn 2513_004v000 Oct 2012 ...