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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

 Specifications

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 50
ST8831B
Spectrum Analyzer 75with 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
1MHz1000MHz
Reference Frequency Stability
1 x10-6/1 x10-7(Option)
Frequency Temperature Stability
2 x10-6(050)
Resolution
10Hz
Frequency Counter
Accuracy
1S/N >25dB
Resolution
1Hz
Frequency Scan Width
Range
0Hz(Zero Span)1KHz1000MHz
Sweep Time and Triggering Type
Sweep Time
20mS250S(Span 1KHz)
20 S250S(Span = 0Hz)
Time Accuracy
0.2%
Triggering Type
Free TriggerSingle TriggerVideo TriggerLine Trigger
Resolution Bandwidth(RBW)
Range
1KHz3 MHz 1-3 Step  and 30Hz100Hz300Hz Option
Accuracy
10%
selectivity
60dB/3dB Bandwidth Rate< 5:1
Video Bandwidth(VBW)
30Hz1MHz1-3 Step 
Phase Noise
-120 dBc/Hz @ 100kHz offsettypical
-90 dBc/Hz @10 kHz offsettypical
Level Index
Attenuator
Range
0dB - 55dB
Step
5dB
Amplifier Inside
Frequency Range
1MHz1000MHz
Gain
20dB
Noise Coefficient
4dBtypical
Maximum input
+20dBm (Peak Power/ Attenuation>15dB )
100V DC
TOI
>+18dBm(Typical)
Display Average Noise LevelNo Signal Input0dB Attenuation30 kHz RBW, 100 Hz VBW, Sampling Demodulation
-98dBm, 1 MHz1000MHz (Amplifier close)
-117dBm, 1 MHz1000MHz (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 interval1MHz, Amplifier Closed
Residual  Response
(No Signal Input and Attenuation is 0)
-93dBm 1MHz1000MHz
Display
Logarithm Scale
0.10.9 dB/Scale0.1dB step;   140dB/ Scale1dB step
linearity Scale
10 Scale
Scale Unit
dBm, dBmV, dBV, mV
Marker Resolution
Reference Levels 0.03 dB Logarithm     
Reference Levels 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@+255(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 dBV125 dBV 1.0 dB@+255     S/N> 30 dB   
TV Video Frequency
Accuracy
Carrier Frequency2 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
92dBV97dBV  0dB AttenuationAmplifier Close
72dBV77dBV  0dB AttenuationAmplifier Open
Maximum C/N
60dB  ( 1dB Accuracy)
65dB  (3dB Accuracy)
Resolution
0.1dB
CTB/CSO
Best Measurement Range
82dBV87 dBV   0dB AttenuationAmplifier Close
62dBV67 dBV   0dB AttenuationAmplifier Open
Maximum CTB/CSO
63dB    (78 Channels1.5dB Accuracy)
70dB     (78 Channels4.0dB 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
30BV120dBV
Resolution
0.1 dB
Accuracy
Typical:1.0 dB@25 5,C/N>20dB
Width Range
200kHz200MHz
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 BERIn 1 Second
2 x10-31 x10-9
BER Statistic
14320/Minute
Symbol Rate
17 MS/s
Inpu/Output Index
Front Panel
Calibration Output
Frequency
150 MHz 2 x10-6
Amplitude
-20dBm0.5 dB @ +25
RF-Input
Input connector
BNC or F
Input Impedance
75(8831 B/Q) and 50(8831 A/T)
Stationary Wave Ratio
Typical <1.5 (10MHz1000MHz, Attenuator10dB)
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
75/ 50
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 HoursWith Tracking Generator
Others
Work Temperature
0C+40C
Storage Temperature
-10C+50C
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
640480 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 300Hz100H30Hz;     VBW to 1Hz
Video output converter
Converting the VGA signal to RCA and S-Video output


 
 
 
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