ST-8831 1GHz Spectrum Analyzer with CATV,DVB-C

ST-8831 1GHz Spectrum Analyzer with CATV,DVB-C

ST-8831 Series Spectrum Analyzer is portable analyzer, and can be used anywhere in the cable network for analyzing RF signals with a comprehensive scope of measurements. From analysis of digitally modulated signals to test of distortion and noise parameters in the field, this spectrum analyzer is an industry workhorse. The analyzer is specifically focused on the cable TV industry with application specific test features as well. Cable operators typically use the analyzers in the headend and as a tool for elite (high tier) technicians to use for in-depth testing and troubleshooting. They are also used for FCC proof of performance tests. The ST-8831 Series meet the precise testing needs of the customer and are the greatest assistant

ST8831 Series Spectrum Analyzer Includes:

Model	Description
ST8831A	Standard Spectrum Analyzer 50Ω
ST8831B	Spectrum Analyzer 75Ωwith CATV
ST8831Q	Spectrum Analyzer with CATV, DVB-C
ST8831T	Spectrum Analyzer with CATV, DVB-C, DTMB

＊Portable design with DSP technology ＊QAM analysis, spectrum analysis and CATV analysis ＊QAM analysis: MER, BER, EVM, Constellation Diagram ＊Support ITU-TJ.83 Annex A/B/C ＊CATV analysis: CSO/CTB, C/N, HUM, MOD, LEVEL, Cross-Modulation, Auto and Limit Test etc ＊Video Analysis Function: Differential Phase/Gain, Chrominance-to-Luminance Delay Inequality and ＊Powerful Spectrum Analysis ＊6.4"color TFT LCD  and USB, LAN Interface ＊Tracking Generator(option) ＊Battery and AC power supply

Frequency
Range	1MHz～1000MHz
Reference Frequency Stability	±1 x10-6/±1 x10-7(Option)
Frequency Temperature Stability	±2 x10-6(0～50)℃
Resolution	10Hz
Frequency Counter
Accuracy	±1（S/N >25dB）
Resolution	1Hz
Frequency Scan Width
Range	0Hz(Zero Span)，1KHz～1000MHz
Sweep Time and Triggering Type
Sweep Time	20mS～250S(Span ≥1KHz) 20 μS～250S(Span = 0Hz)
Time Accuracy	±0.2%
Triggering Type	Free Trigger、Single Trigger、Video Trigger、Line Trigger
Resolution Bandwidth(RBW)
Range	1KHz～3 MHz 1-3 Step  and 30Hz、100Hz、300Hz （Option）
Accuracy	±10%
selectivity	（60dB/3dB Bandwidth Rate）：< 5:1
Video Bandwidth(VBW)	30Hz～1MHz（1-3 Step）
Phase Noise	＜ -120 dBc/Hz @ 100kHz offset（typical） ＜ -90 dBc/Hz @10 kHz offset（typical）
Level Index
Attenuator
Range	0dB - 55dB
Step	5dB
Amplifier Inside
Frequency Range	1MHz～1000MHz
Gain	20dB
Noise Coefficient	4dB（typical）
Maximum input	+20dBm (Peak Power/ Attenuation>15dB )
	100V DC
TOI	>+18dBm(Typical)
Display Average Noise Level（No Signal Input，0dB Attenuation，30 kHz RBW, 100 Hz VBW, Sampling Demodulation）	≤-98dBm, 1 MHz～1000MHz (Amplifier close) ≤-117dBm, 1 MHz～1000MHz (Amplifier open)
spurious signal Response Range	-20dBm Single Audio Mixer Input and Amplifier Closed
Second Harmonic	<-65 dBc
IMD	<-70 dBc -20dBm Dual Audio Mixer Input， Signals interval≥1MHz, Amplifier Closed
Residual  Response (No Signal Input and Attenuation is 0)	≤-93dBm 1MHz～1000MHz
Display
Logarithm Scale	0.1～0.9 dB/Scale，0.1dB step;   1～40dB/ Scale，1dB step
linearity Scale	10 Scale
Scale Unit	dBm, dBmV, dBμV, mV
Marker Resolution	Reference Level’s 0.03 dB ——Logarithm      Reference Level’s 0.03%  —— Linearity
Trace	3 Traces Display
Detector Type	Sampling Value, Positive Peak Value, Negative Peak Value, Normal Value, Average Value
Marker Function	Peak Value, Next Peak Value, To Center, To Reference etc.
Marker Display	Normal, Delta, Fixed, Frequency Counting
Reference Level Range	-130 dBm～+40dBm
Level Accuracy	±1dB@+25±5℃(Typical)
Resolution Bandwidth Switching Accuracy	±0.1dB (Typical)
Input Attenuator Switching Accuracy	±0.3dB (Typical)
CATV Index
Channel Mode	Frequency, Channel
Channel System	Customized, NTSC, PAL
Channel Amplitude Range	20 dBμV～125 dBμV ±1.0 dB@+25±5℃     S/N> 30 dB
TV Video Frequency
Accuracy	Carrier Frequency×（±2 x10-6 ）＋10Hz
Resolution	1Hz
V/A
Accuracy	±100Hz
Resolution	1Hz
V/A Ratio	±1dB (S/N>30dB)
Audio offset
Range	100KHz
Accuracy	±2 KHz   ≤80KHz ±3 KHz   ≥80KHz and ≤100KHz
HUM/Low Frequency Interference
Type	CW or Video Signal(on-line)
Range	1%～20%
Accuracy	±0.5% (1%～5%);±1% (5%～20%)
Modulation Depth
Modulation Depth	40%～95%
Resolution	0.1%
Accuracy	±1.5%(S/N>40dB)
Signal Type	Use VITS line with white reference
Carrier to Noise Ratio (C/N)
Best Measurement Range	92dBμV～97dBμV  0dB Attenuation，Amplifier Close 72dBμV～77dBμV  0dB Attenuation，Amplifier Open
Maximum C/N	60dB  ( ±1dB Accuracy) 65dB  (±3dB Accuracy)
Resolution	0.1dB
CTB/CSO
Best Measurement Range	82dBμV～87 dBμV   0dB Attenuation，Amplifier Close 62dBμV～67 dBμV   0dB Attenuation，Amplifier Open
Maximum CTB/CSO	63dB    (78 Channels±1.5dB Accuracy) 70dB     (78 Channels±4.0dB Accuracy)
Resolution	0.1dB
In-Channel Frequency Response
Range	±12dB
Accuracy	±0.2dB
Resolution	0.1dB
Differential Gain
Accuracy	±2%
Differential Phase
Accuracy	±3°
Chrominance to Luminance Delay Inequality
Accuracy	±40ns
Digital Index
Modulation Analysis
Type	16/32/64/128/256QAM, QPSK  ITU-T J.83 Annex A,B&C DOCSIS, EuroDOCSIS
Interweaver Capability	Max 128 x 4 ( Annex B) ,Max12 x 17 (Annex A/C )
Constellation Diagram	QPSK 16/32/64/128/256QAM， Zoom Function
Equalizer	Open/Close
Channel Power
Range	30BμV～120dBμV
Resolution	0.1 dB
Accuracy	Typical:±1.0 dB@（25± 5℃,C/N>20dB）
Width Range	200kHz～200MHz
Modulation Error
MER	22 dB ～ 40 dB(64/256QAM)
Accuracy(MER)	± 0.5 dB  （22 ～ 30 dB） ± 1.0 dB  （30 ～ 35 dB） ± 1.8 dB  （35 ～ 40 dB）
EVM)	0.65% ～4.1%
Pre-post BER（In 1 Second）	2 x10-3～1 x10-9
BER Statistic	1～4320/Minute
Symbol Rate	1～7 MS/s
Inpu/Output Index
Front Panel
Calibration Output
Frequency	150 MHz ± 2 x10-6
Amplitude	-20dBm±0.5 dB @ +25℃
RF-Input
Input connector	BNC or F
Input Impedance	75Ω(8831 B/Q) and 50Ω(8831 A/T)
Stationary Wave Ratio	Typical <1.5 (10MHz～1000MHz, Attenuator≥10dB)
USB	USB1.1
Back Panel
VGA Output	Standard VGA Output
Keyboard Port	6pin
ASI Output	BNC
Tracking Generator(Option)
Phase Noise	<-80dBc/Hz@10KHz
Amplitude Range	0dBm～-60dBm
Amplitude Accuracy	±1.5dB
Harmonic Distortion	Typical≤-25dBc
Non harmonic Distortion	Typical≤-35dBc
Output Impedance	75Ω/ 50Ω
VSWR	≤2.0
Power Supply
Battery	14.8V / 6Ah Chargeable Li-lon Battery
Adapter	19V /3.42A
Charging Time	Round 5 hours
Battery Working Time	>3 Hours    >2.5 Hours（With Tracking Generator ）
Others
Work Temperature	0°C～+40°C
Storage Temperature	-10°C～+50°C
Dimension(Width X Height X length)	360mm × 180mm × 350mm
Net Weight(With Battery)	Round 9 kg
Display	16cm (6.4 inches) TFT Colorful LCD
Display Resolution	640×480 Pixels
Option
Tracking Generator	1000MHz/3000MHz Tracking Signal Source
Workbench	PC management software
Line Selection in CATV	Video Analysis including Differential Phase, Differential Gain, Chrominance-to-Luminance Delay Inequality and Row Triggering function in Spectrum
Narrowband RBW	RBW to 300Hz、100H、30Hz;     VBW to 1Hz
Video output converter	Converting the VGA signal to RCA and S-Video output