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TV FIELD INTENSITY METER, TYPE: GD-300
GD-300

 

 

 

TV Field Intensity applies to the need of the television and cable television engineering installation and detection, it is the high-performance surveying instrument specially designed for the cable television technical personnel. The instrument adopts the all-number display, the readings on the measuring instrument are clear and precise, and owing to the introduction of the micro processing unit, therefore, it makes its functions stronger, the precision higher, operation more flexible and convenient. The large screen figure monitor is very convenient to measure the main technical targets of CATV system. It has the functions such as the single-channel, multi-channel, all-band scanning, difference-carrying measurement, signal-to-noise ratio (SNR, S/N) measurement and spectrum analysis frequency analysis etc.

Applications
  • Cable modem analysis using Zero Span mode provides accurate, in-service power and C/N measurements.
  • QAM View option provides complete analysis of digital TV and forward cable modem signals.
  • Find ingress fast with Field View option. Cable technicians working in the field can see the reverse path at the headend.
  • Full, in-service, proof-of-performance analyzer.
  • Fast, sensitive spectrum analyzer.
  • Digital QAM carrier demodulation includes 16,32,64, 128 and 256 QAM constellation display with zoom, average digital power level, bit error rate (BER), and 22 to 39 dB modulation error rate (MER).

     Katalógus letöltés (pdf) 

GD300
46MHz to 870MHz
GD300D
5MHz to 870MHz
GD300Q
46MHz to 870MHz, with QAM function
GD300DQ
5MHz to 870MHz, with QAM function

 

 Specifications:                 

Channel/Frequency Index
Frequency Range  
46MHz --870MHz,
5MHz--870MHz (Only for type
with letter D)
Precision 
50ppm (at 25 +5 Celsius)
Resolution  
50KHz
Resolution
Bandwidth 
280KHz
Frequency step
50KHz, 100KHz,500KHz
Channel type
Analog TV
TV
Digital TV
16/32/64/128/256 QAM
Frequency/Channel
SIGL
Analog power level testing
measuring range
25dBuV --120 dBuV
Precision
±1.5dB
Resolution
0.1 dB
detection method
Peak value detection
input impedance
75Ω
Digital power level testing
measuring range
25dBuV -- 110 dBuV
Precision
±1.5dB
Resolution
0.1 dB
detecting method
average power
input impedance
75Ω
Voltage testing
input range
0 --100V AC/DC
precision
±2V
resolution
0.1V
 
 
Digital Channel
modulation mode
comply with DVB-C/ITU J83-A
QAM mode
16/32/64/128/256QAM
Symbol Rate
1MS/S-7MS/S
Band width
set by user
MER
22-39 dB
Precision
±2dB
BER
1E-4--1E-9
Carrier-Noise ratio (C/N)
signal input range
>70dBuV
measuring range
20dB--50dB
Precision
±2 dBuV
Resolution
0.5dB
Spectrum Analysis
Frequency Range  
5MHz--870MHz
Resolution 
100Hz
Precision 
50ppm
power levels range
25dBμV--120dBμV
power levels resolution
0.1dB
power level Precision
±1.5dB
Dynamic range
60dB
input impedance
75Ω
RBW
300KHz
testing band width
6MHz,12MHz, 62MHz,
All range scan
slope testing
Number of channels
5
resolution
±0.1dB
QAM testing function (Q model)

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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