Complete set of spectrum analysis tests in one instrument
Intuitive user interface for shorter learning curve
Full-featured, high performance, low-cost analyzer alternative for tight budgets
Automated FCC proof testing to simplify technician’s task
The productivity solution for headend and high-tier techs.
A portable analyzer designed for use anywhere in the cable network, Trilithic’s new 8821Q Spectrum Analyzer provides a comprehensive array of digital signal quality tests to give headend and elite techs an advantage in alignment, troubleshooting and proof of performance testing.
Thanks to DSP technology, the system can make a wide range of precision measurements with exceptional speed – including QAM, MER, pre and post FEC BER, equalizer tap graph, in-channel frequency response, and group delay.
Priced significantly lower than comparably equipped spectrum analyzers, the 8821Q analyzer enables cable system operators to put sophisticated analysis and troubleshooting capabilities in the hands of a wider range of technicians.
Specifications
Frequency
Range
1 MHz to 1 GHz
Range
1 kHz - 3 MHz in 1-3-10 seq
Accuracy
± 15%
Video Bandwidths
10 Hz to 1 MHz in 1-3-10 seq
Frequency Reference: Aging
± 1 PPM per year
Frequency Reference: temperature stability
± 2 PPM (0 to +50 oC)
Phase Noise
> 90 dBc/Hz @ ± 10 kHz
Frequency counter
Accuracy: ± 2 PPM, ± 1 count
Resolution: 1 Hz
Frequency Span
Range
0 Hz, 200 Hz to 1.0 GHz
Sweep Time Range
20 μsec to 500 sec (span = 0 Hz)
30 msec to 500 sec (span > 0 Hz)
Sweep Trigger
Free Run, Single, Video, TV
Amplitude
Response flatness
± 1.0 dB (1 MHz to 1.0 GHz)
Level Accuracy
± 1.0 dB @ 20 oC
Impedance at RF Input
75 Ω
Input return loss
> 14 dB (> 10 dB attenuation)
Maximum safe input
+ 68 dBmV, 100 VDC
DANL
without preamp < -95 dBmV/Hz
with preamp (typical) < -115 dBmV/Hz
.
Noise figure
14 dB
2nd Harmonic Distortion
< -68 dBc for +29 dBmV tone at input mixer
3rd Order DIstortion
< -68 dBc for two +29 dBmV tones at input mixer
Residual Responses
< -55 dBmV
Vertical scale
0.1 to 1.0 dB/div in 0.1 dB steps; 1 to 40 dB/div in 1 dB steps
Input attenuator
0 to 55 dB in 5 dB steps
Internal callibrator
150 MHz at +28.7 dBmV, ± 0.5 dB
Visual and Aural Carrier Levels
High speed channel scan
50 channels ≈ 1 minute
Multi-channel mode
variable up to 8 channels
Single channel mode
with spectrum display
Tuning range
5 MHz to 1.0 GHz
TV channel amplitude range
-40 dBmV to +65 dBmV, ± 1.0 dB for S/N > 30 dB
Visual/Aural Delta Amplitude
± 1.0 dB for S/N > 30 dB
TV Visual Frequency
Accuracy
± 2 PPM
FM Deviation
Range
100 kHz
Accuracy
± 2 kHz, 1 to 80 kHz; ± 3 kHz to 100 kHz
Hum Modulation
Modes
CW or Modulated
Range
1% to 20%
Accuracy
± 0.5% from 1 to 5%; ± 1% from 5 to 20%
Cross Modulation
Range
-45 dB to -65 dB
Accuracy
± 0.5% from 1 to 5%; ± 1% from 5 to 20%
Depth of Modulation
AM Range
40% to 95%
Accuracy
± 1.5% (C/N > 40 dB)
Signal type
Use VITS line with white reference
In-Channel Response
Signal type
Multiburst or GCR VITS signal
Carrier-to-Composite Noise
Optimum input range
> +5 dBmV
Maximum C/N
55 dB with ± 2 dB accuracy; 60 dB with ± 3 dB accuracy
CSO/CTB
Optimum input range
> +5 dBmV
Maximum
63 dBc with ± 1.5 dB accuracy; 70 dBc with ± 4.0 dB accuracy
Average channel power
Amplitude range
-30 to +60 dBmV
Accuracy
± 1.0 dB
Channel bandwidth range
200 kHz to 200 MHz
Digital Modulation
Modulation format
QPSK, 16, 32, 64, 128, 256QAM; ITU-T J.83 Annex A, B and C
Symbol rates
1 to 7 MSPS
interleave capability
Up to 128 x 4 in Annex B; 12 x 17 in Annex A and C
Constellation display
Full constellation with zoom Full constellation with zoom
Adaptive equalizer display
8 FFE taps, 24 DFE taps
Modulation error ratio (MER)
Range
22 to 40 dB
Accuracy
± 0.5 dB 22 to 30 dB; ± 1.0 dB 30 to 35 dB; ± 1.8 dB 35 to 40 dB
Error vector magnitude (EVM)
Range
0.65% to 4.1%
Bit error ratio (BER) (before and after R-S decoding)
