Tektronix MTM400A, Техническое описание

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Specifications
1- 12
MTM400A Specifications and Performance Verification
Table 1- 19: COFDM measurements (Cont.)
Characteristic Description
MER (Modulation Error Ratio) with Equalizer
(Typical) 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.
Channel Equalization Status Channel estimate I and Q values for each carrier are displayed.
Constellation The RF constellation is displayed.
BER Pre-Viterbi BER and Pre Reed-Solomon BER values are displayed.
Post RS BER and TEF (Transport Error Flag) Post Reed Solomon BER (uncorrectable error count) and number of Transport
Error Flags are displayed.
Table 1- 20: GigE interface card - general characteristics
Characteristic Description
Ethernet Port The Ethernet Interfaces supports 1000/100/10 Mbit/s data transmission. The Ethernet
Interface to the card will be an IEEE 802.3 compliant 10/100/1000 Ethernet interface
supporting 10/100/1000BT, 1000BSX(multi-mode), and 1000BLX(single-mode).
Two Ethernet interfaces are available - a copper RJ-45 interface and an MSA (multi-
source agreement) compliant SFP (Small Form-factor Pluggable) connector. The SFP
connector will provide for pluggable optical interfaces. Only one interface, either the
copper or optical, will be active at a time for video over IP monitoring. The active interface
will be selectable via software control.
Transport stream rate over IP 250 Kbps to 155 Mbps; typical
Table 1- 21: GigE interface card - Ethernet electrical port
Characteristic Description
Standard 10/100/1000BASE-T IEEE 802.3
Connector Type RJ-45
Data Format 10/100 Base T NRZ
Data Format 1000 Base T Trellis encoded, PAM5 symbols full-duplex on 4-pair Cat-5 UTP per IEEE 802.3ab