Atec Tektronix-DMA120-DMA121 - Manual

Affordable, portable, ready for
cable system technicians: digital
channel 64 and 256QAM
transmission performance
verification measurements
The DMA120 Series Digital
Modulation Analyzers pro-
vide answers to nagging ques-
tions about how to test and
verify performance of your
digital plant. Quantification
of digital transmission perfor-
mance – at any point in your
system – will greatly enhance
technical management and
decision making. The
DMA120 provides analysis of
ITU-T-J.83, Annex B 64 and
256QAM and the DMA121
verifies 64 and 256QAM for-
matted per DVB-C. The DMA120 Series provides
the intelligence cable TV
technicians need to effi-
ciently install and maintain
HFC distribution plant using
64 or 256QAM transmission.
Measurement results provide
a clear picture of system per-
formance, minimizing the
need to re-visit an installa-
tion site or make additional
service calls. The DMA120
Series field tools are housed
in a rugged, weather resistant
package and are powered by
an easy-to-change NiMh bat-
tery. Standard accessories
include a protective soft case,
mains power supply, and
user’s manual.
Copyright © 1999 Tektronix, Inc. All rights reserved.
DMA120, DMA121
Digital Modulation
Analyzers
64 and 256QAM Analysis
In-service Digital Channel
Performance Verification
Measurements at an Affordable
Price
Measurements Compliant with DVB
(ETSI) Standard ETR290
Troubleshooting Aided by
Constellation, Spectrum, and
Equalization Display Modes
Most Measurements Require Only
Two Keystrokes
Pass/fail Indication Reduces
Training Requirements for
Technicians New to Digital Signal
Measurements
PC Card (PCMCIA) Slot for Easy
Memory Expansion
Small and Light Weight
Easy-change Battery