Table 1−16: 8Vsb Board Characteristics - Tektronix MTM400 Technical Reference

Specifications
Table 1−15: COFDM measurements (Cont.)
Characteristic
MER (Modulation Error Ratio) with Equalizer
(Typical)
Carrier Power Distribution
Channel Equalization Status
Constellation
BER
Post RS BER and TEF (Transport Error Flag)
Table 1−16: 8VSB board characteristics
Characteristic
Input Frequency Range
Input Signal Level
Modulation Format
Receiver Bandwidth
Input Termination Impedance
Connector Type
Input Return Loss
1−10
Description
Both MER Peak and MER Average are displayed as measured across all
carriers.
Display Range:
6 dB to 37 dB for QPSK (4QAM)
11 dB to 37 dB for 16QAM
16 dB to 37 dB for 64QAM
Resolution: 0.1 dB
Accuracy: "1 dB to 30 dB (Measured at −30 dBm input in High Resolution
mode). For best MER accuracy, use High Resolution mode, and maintain the
input signal level between −45 dBm and −15 dBm.
The carrier-by-carrier signal-to-noise power ratio is displayed.
Channel Flatness in dB can be viewed from spectrum display.
Tilt in dB can be viewed from spectrum display.
Channel estimate I and Q values for each carrier are displayed.
The RF constellation is displayed.
Pre-Viterbi BER and Pre Reed-Solomon BER values are displayed.
Post Reed Solomon BER (uncorrectable error count) and number of Transport
Error Flags are displayed.
Description
54 MHz to 860 MHz, VHF/UHF channels 2 to 69 (to include low VHF frequen-
cies)
−72 dBm to −6 dBm (−23 dBmV to )43 dBmV)
w −60 dBm to ensure compliance to EN 55103-2 immunity
8VSB in accordance with ATSC A/53B.
6 MHz
75 ohm nominal
F type
5 dB minimum; typical
MTM400 MPEG Transport Stream Monitor Technical Reference