New CD333 Series digital / analog real power analyzer – Analyzer, Digital TV, TV Field Test Instruments – HC Network broadcasting industry
A new type of digital TV TV Field Test Instruments – CD333 Series digital / analog real power analyzer
4 Chuanchuan Jia Electronics Co., Ltd.
New digital TV TV Field Test Instruments
Digital TV RF link testing is the core of the main channel power (ChannelPower), signal to noise ratio (S / N), carrier to noise ratio (C / N), bit error rate (BER), Modulation Error Rate (MER) and so on. Traditional TV Field Test Instruments are analog detectors to measure foundation on, he modified the method a large number of parameters to be added, therefore, whether or accuracy of test methods and product life cycles are difficult to fully meet the requirements of the target test. Furthermore, a variety of traditional instruments, including meter, TV Field Test Instruments, the measurement analyzer CNR (C / N) has many restrictions, especially require the input signal with high input level, there The also demanded the closure of the carrier can be accurately measured.
CD333 is the industry's first to measure the power-based link for digital television transmission specially designed for true high-performance portable power analyzers. Its advanced power measurement based on the true combination of unique simulation technology to CD333 into a high-performance digital signal analyzer. The era of digital television industry made to how accurate and reliable measure, analyze complex modulated signals (QAM, QPSK, etc.) waveform with a new problem. The application of real power measurement is effective and affordable solution to test power and arbitrary waveform scope.
Very low noise, and unlimited local measure C / N is an important feature of CD333. It can also satisfy the Link-level C / N and the client (a small level) C / N measurement requirements, and other similar products at home and abroad at this point difficult to achieve.
The other hand, for compatible with traditional analog TV transmission link characteristics of the measurement, CD333 in the original design when given adequate consideration and technical implementation, to meet the analog TV to digital TV excessive demands of the times. CD333 analog TV single-channel test method and the traditional testing methods remain a good inheritance.
Let's look at CD333N (ordinary type) of the major technical indicators:
frequency components Range (Range): 50 ~ 870MHz
Accuracy (Accuracy): ± 10ppm (20 ± 5 ) Resolution (Resolution): 125kHz, 62.5kHz, automatic selection
Resolution bandwidth (RBW): 100kHz, 300kHz, 6MHz, automatically selected
analog level (peak power) measurements Signal Type (Signal Types): continuous wave CW, video AM, audio FM, all standard PNS
Range (Range): 10 ~ 120 dB V (-50 ~ 60dBmV) typical
Accuracy (Accuracy): ± 1.8 dB (0 ~ 40 , the boot is larger than 1 minute)
Resolution (Resolution): 0.1dB Input attenuator (Attenuator): automatically adjusts Auto
Digital TV channel power (average power) measurements
Signal Type (Signal Types): QPSK, QAM, COMDF, ARBITRAYWAVE
Range (Range): 25 ~ 100 dB V (-35 ~ 40dBmV) / 100 kHz, typical
Accuracy (Accuracy): ± 2 dB (0 ~ 40 , boot than 1 minute)
Resolution (Resolution): 0.1dB Measurement bandwidth (MBW): 0.3 ~ 10MHz (linear integral)
Resolution (Resolution): 0.1dB Input attenuator (Attenuator): automatically adjusts Auto
carrier to noise ratio C / N measurement (analog)
Signal line measurement, no channel restrictions, no pre-filter frequency
Carrier out of range (Range): 15 ~ 120 dB V (-30 ~ 60dBmV) Typical value
Noise level out of range (Noise Range): 0 ~ 60 dB V (-60 ~ 0dBmV) typical
Noise bandwidth (Noise BW): 0.3 ~ 10MHz, 5.75MHz (default)
Noise deviation (Noise Offset): multi-point auto-select (Auto)
C / N measurement accuracy (Accuracy): ± 2 dB (0 ~ 40 , the boot is larger than 1 minute)
Resolution (Resolution): 0.1dB carrier to noise ratio C / N measurement (figure)
Signal line measurement, no channel restrictions, no pre-filter frequency
Carrier out of range (Range): 25 ~ 100 dB V/BW100 kHz
Noise level out of range (Noise Range): 0 ~ 60 dB V (-60 ~ 0dBmV) typical
Noise bandwidth (Noise BW): 0.3 ~ 10MHz, 8MHz (default)
Noise deviation (Noise Offset): multi-point auto-select (Auto)
C / N measurement accuracy (Accuracy): ± 2 dB (0 ~ 40 , the boot is larger than 1 minute)
Resolution (Resolution): 0.1dB QAM analysis Types (Types): 32,64,256
Power (Power): 25 ~ 100 dB V (-35 ~ 40dBmV) / 100 kHz, typical
Symbol rate (Symbol Rates): 1.00 ~ 7.99MHz Post-FECBER
estimated value of: 1.3E-01 ~ 1.6E-10
Automatic measurement mode Capture parameters: channel number, channel type (analog / digital), channel spectrum,
Analog / digital carrier to noise ratio
Determine eligibility limit: the maximum / minimum video, most video is poor, most / least poor video and audio
In use, CD333 keyboard functions are straightforward. And Windows similar to most of the measurement functions can be driven from the main menu to set the various operations, coupled with a friendly Chinese user interface, making measurement easier to understand and operate.
Overall, the real power measurement technology, Fu
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