Comtech EF Data MCED-100 - Manual (Page 87)

A–1
Appendix A. INTERFERENCE
IDENTIFICATION
A.1 Introduction
Without Carrier ID technology, the ability to identify carriers is a complex task even for the most
seasoned operator, technician, or engineer. The ability to identify an interference condition, in
and of itself, is simple – the carrier that is assigned to the given spectrum may either experience
marginally degraded communications (resulting in poor communications or periodic error), or it
may be rendered completely unusable (resulting in no usable communications).
The purpose of this appendix is to present a number of scenarios that address marginal, partial,
and complete interference, and to provide explanations of how Comtech EF Data’s MCED‐100
MetaCarrier® Embedding Device or MCDD‐100 MetaCarrier® Detecting Device (referred to
collectively as the MCxD‐100), using Carrier ID technology, may be used to extract the source of
the interference.
The scenarios presented in this appendix are as follows:
Appendix
Section
Title Scenario Description
A.2 Scenario 1: Marginal Interference
256 ksps Data Carrier Interfering with a 3.5 Msps Data
Carrier
A.3 Scenario 2: Marginal Interference
256 ksps Data Carrier Interfering due to Cross Polarization
with a 3.5 Msps Data Carrier
A.4 Scenario 3: Partial Interference
5.0 Msps Video Carrier Interfering with a 3.5 Msps Data
Carrier
A.5 Scenario 4: Complete Interference
3.5 Msps Data Carrier Interfering with a 256 ksps Data
Carrier
A.6 Scenario 5: Complete Interference
Two 5.0 Msps Carriers with Identical Center Frequency and
Symbol Rate