Specifications
Version 00b
MTS400 Series Performance Verification and Specifications Technical Reference
Table 1−10: 8VSB measurements (Cont.)
Characteristic
Description
BER
Pre-RS BER, SER 1 second and 10 seconds
windows values are displayed
TEF (Transport Error Flag)
Transport Error Flags (uncorrectable error count) in a
1 second window and 10 second window are
displayed
Constellation diagram
The 8VSB constellation diagram is a display of I-data
history with histograms (the IQ constellation is not
available). This is displayed as Symbol Distribution in
the user interface
Echo profile
Equalizer filter tap information is displayed.
Display Echo Level range: Normalized real tap
values over the range of −1 to 1
Display Delay range: −6.7
μ
s to 45.5
μ
s
Table 1
11 lists electrical characteristics for the QAM Annex B card.
Table 1−11: QAM Annex B board characteristics
Characteristic
Description
Input frequency range
88 MHz to 858 MHz
Input signal level
−64 dBm to −19 dBm (45 dBuV to 90 dBuV relative
to 75
)
With either a 64 or 256 QAM input, there are five or
fewer Transport Error Flags in 11 seconds, which
corresponds to a post FEC rate of 1e
−8
w
-40 dBm when operated in an electromagnetic
field of 3 V/m or more
Modulation format
64QAM, 256QAM (compliant with ITU J-83
Annex B)
Interleaving mode
Level 1 and Level 2 interleaving support compliant
with all ITU J-83 Annex B, excluding I, J = (128,7)
and (128,8), and in 256 QAM excluding (8, 16) and
(16, 8)
Modulation baud rate
64 QAM: 5.056941 Mbaud/s
256 QAM: 5.360537 Mbaud/s
Spectrum polarity
Demodulates both Normal and Inverted IF Spectrum
Receiver bandwidth, QAM B
6 MHz nominal
Connector type
F type
Input termination impedance
75
nominal
QAM Annex B Card
Characteristics
