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GAOTek Handheld CATV-QAM Analyzer
GAOTek Handheld CATV-QAM Analyzer

GAOTek Handheld CATV/QAM Analyzer

ID: A0N00014tek
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Product Description

Overview

GAOTek Handheld Digital TV QAM Analyzer is a powerful instrument with a comprehensive measurement suite specifically designed for HFC network testing, troubleshooting, and maintenance. The important function of this device include Enhanced Spectrum Analysis, Analog & Digital TV analysis, DOCSIS 3.0 analysis, Upstream Signal Generator, Ethernet testing, and Auto Test. The revolutionary EVS function enables users to detect coherent distortions hiding under QAM carriers – without interrupting service. GAOTek Handheld CATV/QAM Analyzer’s PC software toolkit is included with each unit, to make data transfer a snap.

Features

  • High Speed Spectrum Analysis: 4~1000MHz.
  • Integrated DOCSIS 3.0 Cable Modem.
  • Integrated Upstream Signal Generator (no FEC)
  • Supports ITU- -T J.83 Annex A/B/C.
  • Error Vector Spectrum: identifies interference signals under QAM carriers, with no break in service.
  • Auto Test

Technical Specifications

Downstream Spectrum Analysis
Frequency Range 4 MHz ~ 1000 MHz
Frequency Stability ± 1 PPM 32 ˚F to 122 ˚F(0 ˚C to 50 ˚C )
Frequency Span 0 MHz ~ full span
Frequency Step 1 kHz
Resolution Bandwidth filters (-3 dB) 30 kHz, 100 kHz, 300 kHz, 1 MHz, 3 MHz
Video Bandwidth filters 30 Hz, 100 Hz, 300 Hz, 1 kHz, 3 kHz, 10 kHz, 30 kHz, 100 kHz, 300 kHz, 1 MHz, 3 MHz
Display Scale and Range 1, 2, 5, 10, 20 dB/div; 8 vertical divisions
Sweep Time 20 ms ~ 25 s
Input Level Range -60 dBmV ~ +60 dBmV
Dynamic Range 65 dB (300kHz RBW)
Sensitivity -50d BmV (300 kHz RBW, Pre-amplifier On)
Attenuation 0~40 dB in 1dB steps
Pre-amplifier Manual, 18 dB Gain
Accuracy of Measurements <±1.0dB@+25±5˚C (typical value)
Measurement Detector positive peak, negative peak, sample, average, RMS
Reference Level -80 dBmV ~ +70 dBmV
Markers 2 vertical markers
Upstream Spectrum Analysis
Frequency range 4~46 MHz (DOCSIS); 4~68 MHz (Euro DOCSIS 2.0); 4~88 MHz (Euro DOCSIS 3.0); 4~120 MHz (DOCSIS 3.1); 4~210 MHz (DOCSIS 3.1)
Frequency Span 42/64/84/116/206 MHz, zero span or manual selections (max 200 MHz)
RBW 100 kHz, 300 kHz
VBW 30 Hz, 100 Hz, 300 Hz, 1 kHz, 3 kHz, 10 kHz, 30 kHz, 100 kHz, 300 kHz, 1 MHz, 3 MHz
Display Scale and Range 1, 2, 5, 10, 20 dB/Div
Sweep Time 20ms ~ 25s
Input Level Range -60 dBmV ~ +60 dBmV
Attenuation Automatic, 0~40 dB
Pre-amplifier Manual, 18 dB Gain
Accuracy of Measurements <±1.0 dB@+25±5˚C (typical value)
Measurement Detector positive peak, negative peak, sample, average
Markers 2 vertical markers
Analog TV Measurement
Standards B/G, I, D/K, L/L’, M/N
Color Standards NTSC, PAL, SECAM
Level Measurement Range 40 dBmV
Level Measurement Range -40 dBmV ~ +60 dBmV
Accuracy <±1.0 dB @+25 ±5˚C (S/N >30 dB)
Level Resolution 0.1 dB
Resolution Bandwidth 300 kHz
CCN >51 dB (Requires +10 dBmV carrier level)
CTB/CSO ≥61 dB with ±2.0 dB Accuracy
HUM Measurement 1 ~ 20%: ±0.5% (1~5%): ±1.0% (5~20%)
Tilt Up to 16 channels
Pre-amplifier Automatic, 18 dB Gain
Attenuator Automatic, 40 dB
Digital TV Measurement
Frequency Range 46 ~ 1050 MHz
Power Level Range -30 dBmV ~ +50 dBmV
Level Resolution 0.1 dB
Accuracy < ±1.5 dB@+25 ±5˚C (C/N>20 dB)
Modulation Type 16, 32, 64, 128, 256 QAM ; 64, 256 QAM
Interleave Depth (128, 1) ~ (128, 4) (12, 17) for A/C
Symbol Rate 4.0 MS/s ~ 7.0 MS/s
SNR >43 dB; Accuracy: ±2.0 dB
MER >41 dB; Accuracy: ±2.0 dB
BER 1E-3 ~ 1E-9
Constellation 16, 32, 64, 128, 256 QAM
Cable Modem Measurement
Downstream Demodulation 64, 256 QAM
Downstream Frequency Range >91 MHz (US); >100 MHz (EU)
Downstream Maximum Speed Up to 304 Mbps (6 MHz) and 400 Mbps (8 MHz)
Downstream Channel Bonding Up to 8 channels
Downstream Bandwidth 6 MHz / 8 MHz
Downstream Input Signal Level -15 dBmV ~ +15 dBmV
Upstream Frequency Range 5 ~ 42 MHz; 5 ~ 65 MHz; 5 ~ 85 MHz
Upstream Signal Bandwidth TDMA: 200/400/800/1600/3200/6400 kHz; S-CDMA: 1600/3200/6400 kHz
Upstream Output Signal Level QAM level range: +17 to +58 dBmV; QPSK level range: +17 to + 61dBmV
Upstream Channel Bonding Up to 4 channels
Upstream Maximum Speed 120 Mbps (4 channels bonding)
Upstream Signal Generator
Signal Modulation CW, QPSK, 16 QAM, 64 QAM, 256 QAM
Symbol Rate 1.28 MS/s, 2.56 MS/s, 5.12 MS/s
MER >38 dB; Accuracy ±2 dB
Frequency Range 5 MHz ~ 85 MHz
Frequency Adjustable Steps 1 MHz
Signal Level Range 8.0 ~ 58 dBmV (CW, QPSK)
Level Adjustable Step 1 dB
Others
RF Input 75Ω F-type connector
USB USB 1.1
Ethernet RJ45, 10/100T Ethernet
Display 4.3″ 480 x 272 TFT LCD
AC/DC Adapter 100 ~ 240 V/50 ~ 60 Hz (AC); 12 V/3 A (DC)
Battery Li-ion, 7.4 V/7.8 Ah
Charge Time ~ 4 hours
Working Time > 6 Hours
Dimension (W×H×L) 9.6 in x 5.1 in x 2.4 in (245 mm × 130 mm × 60 mm)
Weight About 3.3 lbs (1.5kgs)
Working Temperature 14 ˚F ~ 122 ˚F (-10 ˚C ~ + 50 ˚C)
Storage Temperature -4 ˚F ~ 140 ˚F (-20 ˚C ~ + 60 ˚C)

Additional Information

High-Speed Spectrum Analysis

The GAOTek Handheld CATV/QAM Analyzer offers enhanced spectrum analysis performance with a frequency range of 4 MHz ~ 1000 MHz and sensitivity to signals as low as -55 dBmV (@300 KHz).

Figure 1: Spectrum Analysis

Figure 2: Spectrograph

The spectrogram provides a scrolling three-dimensional display, allowing users to track frequency and level over time- excellent for analyzing intermittent signals.

DVB-C Signal Analysis

The GAOTek Handheld CATV/QAM Analyzer supports the ITU-T J.83 Annex A/B/C standard, providing Channel Power, MER, BER, Constellation, and Digital HUM measurements.

Figure 3: DVB-C Channel Measurement

The GAOTek Handheld CATV/QAM Analyzer also offers Digital HUM distortion measurement, from the fundamental frequency to 4th harmonic components.

Figure 4: Digital HUM

Figure 5: Constellation Display

Figure 6: BER and MER Statistical Analysis

EVS In-service Interference Detection

The Error Vector Spectrum feature can find interference signals under a QAM carrier without service interruptions.

Figure 7: The EVS mode finds narrow band interference signals with supreme clarity and ease.

Cable Modem Measurement

The GAOTek Handheld CATV/QAM Analyzer incorporates a standard DOCSIS 3.0 cable modem, compatible with DOCSIS 1.X, 2.0 & 3.0. The built-in modem supports 8x DS and 4x US bonded carriers. Figure 8 (below) shows the CM statistical info screen – including downstream signal level, modulation type, bandwidth, symbol rate, MER, BER, upstream signal level, symbol rate & UCD (Upstream Channel Descriptor). Users can select the desired DOCSIS mode, downstream channel, and UCD. Basic network test tools include Ping, Traceroute, PPPoE, FTP, and Browser.

Figure 8: DOCSIS 3.0 Statistical Information Display

Upstream Signal Generator

The Upstream signal generator can generate a CW carrier or a QAM signal. A sweeping mode is also available.

Figure 9: Upstream Signal Generator

Auto Test

The GAOTek Handheld CATV/QAM Analyzer comes equipped with a wide range of region standard channel plans spanning (in part) North America, Asia, and Europe, as well as several sets of limit profiles – allowing users to design automatic tests. Tasks that can be automated include Analog TV, Digital TV and Cable Modem testing. Once the analyzer completes an auto test, all items in the test results will indicate Pass or Fail according to the limit profile. Results are automatically saved for later analysis.

Figure 10: Auto Test Project

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