Tektronix MTS4000 MPEG, Technical Reference, Page: 18 / 41

Speci fi cations
Table 4: DVB-S2 measurements (Option DS2 only) 1
Measurement Description
RF lock RF lock is indicated by a LED on the rear panel and a status indicator on the UI
Input level Range: –60 dBm to –30 dBm
Signal Strength Resolution: 0.1 dBm
MER (Modulation Error Ratio) with
equalizer, typical Display Range: 0 dB to 40 dB with equalizer
Resolution: 0.1 dB
CNR (Carrier to Noise ratio), typical Display Range: 0 dB to 40 dB
Resolution: 0.1 dB
SNR (Signal-to-Noise Ratio) Display Range: 0 dB to 40 dB
Resolution: 0.1 dB
Pre-Viterbi BER Pre-Viterbi BER is displayed
Pre-Reed Solomon (RS) BER Pre-RS BER is displayed
Pre-LDPC BER Pre-LDPC BER is displayed
Pre-BCH BER Pre-BCH 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) is displayed
Transmission parameters All coding and modulation parameters are indicated to the user in the UI; Transport
Stream monitor must be tuned to a valid Transport Stream in order to report RF
transmission parameters
Constellation The RF constellation is displayed on the UI
1 Option S2 is no longer available and has been replaced by Option DS2. For convenience, the speci fi cations for the Option S2 card are included in this
document. (See page 10, Discontinued option .)
Table 5: 8VSB card characteristics
Characteristic Description
Input frequency range 54 MHz to 860 MHz, VHF/UHF channels 2 to 69 (to include low VHF frequencies)
Input signal level –72 dBm to –6 dBm (–23 dBmV to +43 dBmV)
Use high quality shielded cables and higher input level to prevent ingress of interfering
signals. This is particularly important at the tuned frequency where the input circuitry is
by design most sensitive.
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, typical 5 dB minimum
4 MTS4000 Speci fi cations and Performance Veri fi cation