Trilithic 8821Q

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)