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Copyright 2006 - Unistring Tech Solutions Pvt. Ltd., INDIA

Solar & EPC
Products & Technologies
ISO certified company
UTS offers wide range of products in Wireless communications, RADAR, SONAR, EDA and Energy sectors. With the long standing IP core development experience, UTS offered products use latest algorithms and technological developments, to provide better features than existing products. UTS products take best out of the latest FPGA/GPU/CPU technologies to offer improved features compared to legacy processor based products.
UTS being ISO 9001:2008 certified company, follows standard procedures while executing the projects, to ensure  long term success to client, by delivering fully verified, reusable and well documented software and hardware modules.
Signal and Noise Generator with BER Tester
Unifying Software & Hardware
The UTS’s SNG with BER tester is an automatic injection mode category equipment for characterizing the communication receivers against noise and fading conditions. This equipment allows perfect validation of UUT through precise noise injection in the signal and measures the bit error rate. The Eb/No sweep and BER plot generation feature allows automatic validation of modern telemetry receivers, satellite modems and most of the other communication receivers. 

Operating modes and features

Specifications

Ratio Description
C/NO User can set the desired ratio between Carrier to Noise spectral density.
C/N User can set the desired ratio between Carrier to Noise power.
Eb/NO The desired ratio between energy per bit to Noise spectral density can be given.
NO User can use the CNG as noise generator with desired spectral density.
(a) SNG with BERT :      Digital modulations with precise noise levels (as per C/N, C/No, Eb/No ratios) and BER measurement.
(b) Fading simulator: User can select different fading models with required fade depths and rates to generate faded signal conditions.
(c) CNG: In Carrier to Noise Generation mode user applied input signal is added with noise as per the set ratio and output signal is generated.
The UTS’s SNG can be shipped with additional modules for 100 Mbps LAN, RS-232, RS-422  interfaces. Also for remote control usage (suitable for ATEs) additional TCP/IP server can be opted (to be ordered separately).
Part No. and Frequency range UTS-TMSE-SNG-BERT02-RF1 ( 400 MHz -4 GHz)
(Refer separate data sheet for IF 50  - 180 MHz model)
SBC and Display Windows ported SBC with 10” TFT display with control GUI software.
Interfaces SMA and N-type Female connectors
I/O ports RF :   Input signal,  Output signal (N-type)
Tx base band: - Clk out, Bit in, Bit out, Trig (SMA)
Rx base band: Bit in, Clk in, Gate in, Error out

bandwidth 40 MHz , (optional feature 80 MHz)
Input power -40 dBm to +0 dBm
Output power -55 dBm to +0 dBm
Gain Flatness 0.4 dB
Noise output -55 dBm to 0 dBm
Noise flatness 0.4 dB
Set Ratio accuracy 0.4 dB RSS
Modulation types BPSK, QPSK, 8-PSK, OQPSK, QAM-16, QAM-32, QAM-64, FSK, Non-coherent FSK  (Optionally other modulation types available)
Source selection Internal PN sequences with programmable lengths or External data bit.
Channel coding Convolution, Reed Solomon
Fading types Rayliegh and Rician fading models (symbol spaced, fractional symbol spaced) with adjustable fade rates and depths
BER mode BER measurement at given Eb/No or given range of Eb/No values. BER plot can be directly generated with set time averaging.
BER measurement settings The number of bits for each Eb/No step can be selected.
Power requirement 230+/- 10 Volts AC, 50 Hz.
Size 19", 5U Rack mountable
Operating Temp range 0o C  -  35o C
The unit provides 10” touch screen display along with single board computer (SBC) ported with Linux OS. The user friendly GUI provides all the options to set required parameters. The software allows the user to save and load the configurations. In addition to touch screen interface the SNG allows USB keyboard and mouse interface.
Unlike conventional diode based and other analog based noise generators, the UTS’s CNG uses DSP techniques for AWGN generation.  The three key parts of the digital techniques based SNG are digital power measurement, precise noise and fading generation with fine output level control.
User friendly GUI
Digital Noise and Fading generation algorithms
User interfaces (optional)
Click here to download data sheet Signal and Noise Generator with BER Tester
Contact ewip@unistring.com for more details.