Features
The Noise Com programmable DNG7500, generates pseudo-random noise and CW signals for RF, Microwave, and digital applications. It can provide up to a 70 MHz wide RF output to emulate real-world noise and interference conditions. The user can create many complex waveforms, including digital notches, and burst pattern waveforms The Large 8.4 “ color display contains unit block diagrams and tabular signal parameter values making the creation and storage of waveforms intuitive and efficient. The signals can be up-converted to your band of interest with an optional LO and mixer. User created MatLAB data files can be imported for digital conversion and subsequent analog signal output. An optional dual channel output allows for cost effective ATE test systems.
The Noise Com DNG7500, generates programmable, user specified, pseudo-noise and CW signal spectrums for RF, Microwave, and Fiber Optic equipment testing. It can provide a 70 MHz RF spectrum output including noise and CW waveforms to precisely emulate real-world noise and interference conditions. Noise and Signal parameters can be entered via keypad and a 8.4 inch color GUIGraphical User Interface. It can also generate signals from data files supplied by the user and downloaded via an optional Ethernet remote interface.
The unit comes standard with a GPIB, IEEE-488, remote interface.
The DNG7500 can provide digitally simulated Additive White Gaussian Noise-AWGN with the following user settable parameters: precise start and stop frequencies with brick wall filters; tilt; notch (stop-band) filters with programmable frequency, bandwidth, and depth. The DNG7500 can generate any combination of noise and signals adjacent or occupying overlapping frequency positions with precise relative amplitudes.
CW signals are generated with user programmable amplitude and frequency.
Optionally, other types of signals can be included or loaded by the user via Ethernet.
At the heart of the DNG7500 is a state-of-the-art 14-bit, 150 M-Sample/s AWG-Arbitrary Waveform Generator with up to 64 M-Bytes of memory. This allows the most accurate signal and noise simulation to date.
Features
70 MHz RF output bandwidth
Generates noise and interfering signals for all types of communications applications
GUI-Graphical User Interface which can plot predicted spectrum
8.4” Color VGA Display
Keypad-Full Local Control
Waveform building from front panel
Keyboard interface
Rugged N-type Connectors
GPIB IEEE-488 remote interface
Generate and save waveforms with Programmable CW and Noise Parameters in Windows 98.
Deep memory, 32 M-Byte standard, Up to 64 M-Byte memory
View noise and CW spectrum plot on Display.
Variable output attenuator
Rack mountable chassis
The DNG includes interfaces for video display, keyboard, mouse and GPIB-equipped devices.
Remote operation and data access is available through integral GPIB and Ethernet ports.
Output signals are available at a type N connector with maximum VSWR of 1.50:1.
Options
External triggering.
Custom frequency converters available up to 40 GHz.
MatLab file download compatible.
Internal Analog noise (true AWGN) generation.
Burst generator. Internally time gated noise and interference.
Applications
Custom pseudo noise generation with precise Band Width.
CATV
• Test this equipment against every possible noise and interference
• Upstream Interference. CMTS-Cable Modem Termination System-Noise and interference testing
• Return Path monitoring systems testing-Creates interfering spectrums including shaped noise, ingress, signals, and bursts.
DNG7500
Specifications Summary
RF Output:
Frequency Range: 500 kHz to 70 MHz
Frequency Resolution:
Noise: 1 Hz
CW: 1 KHz
Output Bandwidth: 70 MHz
Output Power: 0 dBm
Output Attenuator: 63.9 dB in 0.1 dB steps
Impedance: 50 Ohms
VSWR: 1.5:1
Output Connector: Type N
Harmonically Related Spurs: -60 dBc typical
Non-harmonic Spurs: -60 dBc typical <50MHz
-55 dBc typical <60MHz
-50 dBc typical >60MHz
Generator AWG:
Memory: 32 MB standard, optionally up to 64 MB
DAC Resolution: 14 bits
DAC Output Rate: 150 MSPS
General:
Controller/Processor: Pentium Class 500 MHz
Memory: 256 MB
Hard Drive: 20.5 GB
Display: 8.4” TFT-LCD
640x480 resolution
Operating System: Windows 98 SE
Interfaces: Ethernet 10/100baseT, Video, Keyboard, mouse, GPIB.
Remote: Ethernet or GPIB
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