Trilithic 180 DSP - Spectrum Measurement (Continued; Digital Channel Measurement

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Page VI-4
180 DSP Operation Manual
Signal Level Meter
Digital Channel Measurement
Deep Interleave
Compatibility
Yes
Downstream MER
40 ±2 dB @ +6 dBmV RF Input Level
34 ±2 dB @ -6 dBmV RF Input Level
Downstream BER
Method: True BER, derived from code words not from MER
Standard: ITU J.83 annex A, B, C
Range: 1 E-7 to 1 E-9 @ -6 dBmV RF Input Level
Symbol Rates ≥ 2 msps; ≤ 6.952 msps
Auto Ranging
Resolution
Bandwidth
10 kHz: Span ≤ 3.5 MHz
30 kHz: Span ≤ 12.0 MHz
100 kHz: Span ≤ 35.9 MHz
300 kHz: Span ≤ 300 MHz
1 MHz: Span ≤ 259.2 MHz
3 MHz: Span ≥ 359.3 MHz
Display Spans
Return Path: 4 to 42 MHz, 4 to 65 MHz, 4 to 85 MHz,
or 4 to 110 MHz
Forward Path (Optional): User-selectable in 1 kHz steps
Display Scale 1, 2, 5, or 10 dB/division
Display Range 8 vertical divisions (when marker bar is hidden)
Spurious Free
Dynamic Range
60 dB @ 25˚ C (77˚ F) (+50 dBmV)
Sensitivity
Return Path: -30 dBmV (4 MHz to 110 MHz)
Forward Path (Optional): -40 dBmV (50 MHz to 1 GHz)
Spectrum Measurement (continued)