Tektronix MTM400A, Technical Reference

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Specifications
1- 8
MTM400A Specifications and Performance Verification
Table 1- 15: 8PSK and QPSK measurements
Characteristic Description
RF Lock RF lock is indicated by LED and Status.
Input Level (Signal Strength) Range: --60 dBm to --30 dBm; Resolution: 1 dBm; Accuracy: 5 dBm; typical
EVM (Error Vector Magnitude) Display Range:
≤
4.0% to
≥
30.0% rms; Resolution: 0.1%;
Accuracy: 20% of reading; typical
MER (Modulation Error Ratio) with Equalizer Display Range: 10 dB to 26 dB with equalizer; Resolution: 1 dB;
Accuracy:
2 dB for range 10 dB to 20 dB; typical
SNR (Signal to Noise Ratio) Display Range: 5 dB to 35 dB; Resolution: 1dB;
Accuracy:
2 dB for range from 5 dB to 30 dB; typical
Pre Reed Solomon (RS) BER (Bit Error Rate) Pre-RS BER is displayed.
Post RS BER and TEF (Transport Error Flag) Post Reed Solomon BER (TEF ratio), TEF rate, and number of Transport Error
Flags (TEF count) are displayed.
Constellation The RF constellation is displayed.
Table 1- 16: 8VSB interface card characteristics
Characteristic Description
Input Frequency Range 54 MHz to 860 MHz, VHF/UHF channels 2 to 69 (to include low VHF frequen-
cies)
Input Signal Level --72 dBm to --6 dBm (--23 dBmV to
+
43 dBmV)
≥
--60 dBm to ensure compliance to EN 55103-2 immunity
Modulation Format 8VSB in accordance with ATSC A/53B.
Receiver Bandwidth 6 MHz
Input Termination Impedance 75
Ω
nominal
Connector Type F type
Input Return Loss 5 dB minimum; typical