Specifications

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Spectrum Master™ Compact Handheld Spectrum Analyzer Features
ISDB-T Signal Analyzers (Options 0030, 0079, 0032)
RF Measurements – Signal Power
The Signal Power screen showing the transmission
channel power and signal field strength used to assess
suitable reception coverage area.
RF Measurements – Spectrum Mask
The Spectrum Mask measurement is shown. ISDB-T
systems in Japan and South America call for different
spectrum mask specifications. Both are catered for.
Signal Analysis – Constellation and MER
This is the single most important signal quality
measurement. Poor MER leads to higher received
errors which can cause serious picture degradation.
SFN Analysis – Delay Profile
This measurement indicates whether signals from
different transmitters in an SFN are received correctly
to prevent interference and high received errors.
RF Measurements
(Option 0030)
Signal Power
Channel Power
Termination Voltage
Open Terminal Voltage
Field Strength
Spectrum Monitor
Channel Power
Zone Center Channel
Zone Center Frequency
Spectrum Mask
Mask (Standard A) Japan
Mask (Standard B) Japan
Mask (Critical) Brazil
Mask (Sub-critical) Brazil
Mask (Non-critical) Brazil
Phase Noise
Spurious Emissions
Signal Analysis
(Option 0030)
Constellation (w/zoom)
Layer A, B, C, TMCC
Sub-carrier MER
DelayProle(w/zoom)
Frequency Response
Measured Data
Frequency
Frequency Offset
MER (Total, Layer A/B/C, TMCC, AC1)
Modulation (Layer A/B/C)
Mode, GI
Sub-carrier MER w/marker
Delay w/marker
Frequency Response w/marker
BER Analysis
(Option 0079)
Layer A, Layer B, Layer C
BER and Error Count per Layer
Before RS
Before Viterbi
PER and Error Count per Layer
MPEG Bit Rate per Layer
TMCC Information per Layer
Modulation
Code Rate
Interleave
Segments
Channel Power
Mode, GI
Signal Sync Status
ASI Out
SFN Analysis
(Option 0032)
Impulse Response (w/zoom)
In-band Spectrum
Measured Data
Channel Power
Delay
DU Ratio
Power
Field Strength
ISDB-T Signal Analyzer
The Spectrum Master features options that
enable area survey measurements and
the installation and field maintenance of
ISDB-T digital broadcasting equipment in
accordance with ARIB (Japan) and ABNT
(Brazil) standards.
The user has three measurement modes
to choose from depending on the his skill
level and test environment: Custom,
where specific measurements and setups
are chosen; Easy, where some setup
parameters are automatically set or
detected; Batch, where the user can
specify all relevant measurements, setups
and channels for automatic measurement
and results’ display for fast and efficient
field testing.
The goal of all measurements is to ensure
digital TV transmitters are configured
according to license agreements and
optimized for error-free reception over the
entire coverage area helping to create an
excellent televisual experience.
Field Strength
FieldStrength(dBμV/m)measurement
enables a technician to assess whether
signals will be detected at a location with
sufficient power for good TV reception. The
antenna factors of the antenna used for
measurement can be compensated for to
facilitate easy measurement comparison.
Modulation Error Ratio (MER)
MER is the fundamental measurement in
digital TV broadcast systems. It quantifies
the modulation signal quality directly. It
is essential for managing signal margin
and the deterioration of equipment with
time, as well as for maintaining stable
broadcast services. MER is independent of
modulation type so MER measurements
can be easily compared.
Delay Prole
This function measures the difference in
time and frequency of multi-path signals
caused by reflections from obstacles or
from other transmitters. By measuring
the channel frequency response, the
multi-path effect or frequency selective
fading can be observed. It is important
that all signals from reflections or other
transmitters are received within the
guard interval to prevent inter-symbol
interference which will cause reception
degradation. Delay Profile measurement
is useful for adjusting the timing of SFN
repeaters to achieve this.
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