RDL ST-NG1 Data Sheet

STICK-ON® SERIES

Model ST-NG1
Random Noise Generator

ANYWHERE YOU NEED...

• True Random Noise Source

• Masking Noise Sources

• Pink Noise

• White Noise

• Mic and/or Line Level Noise Signals

You Need The ST-NG1!

The ST-NG1 is part of the group of versatile STICK-ON products from Radio Design Labs. STICK-ONs
feature the advanced circuitry for which RDL products are known, combined with unequalled versatility in
mounting possibilities. The durable adhesives provided with the ST-NG1 permit permanent or removable
mounting. Numerous available mounting accessories, brackets and rack-mount chassis are optionally
available to facilitate any system design.

APPLICATION: The ST-NG1 is the ideal choice where random white or pink noise is needed. It is
suitable either as a reference noise source for audio measurements; or as a masking noise source in
engineered sound or counter-intelligence applications, particularly where true random noise is required.

Amplitude limiting circuitry in the ST-NG1 controls extreme peak excursions while preserving random
variations of at least 20 dB. The noise generating circuitry in the ST-NG1 is truly random analog noise
occupying the full bandwidth from 20 Hz to 20 kHz. This makes the ST-NG1 ideal in masking
environments where secure, random noise is required. Unlike the typical digitally-generated
pseudo-random noise generators, which can be decoded and removed by effective intelligence
equipment, the ST-NG1 produces no repetitive frequency or amplitude pattern.

Four outputs are available on the ST-NG1. Both a mic-level and line-level output are provided from each
noise source. A 25-turn gain-trimming potentiometer is provided for the white noise. A separate 25-turn
gain-trimming potentiometer is provided to set the pink-noise level, independent of the white-noise setting.
The gain trim for each noise source adjusts both the line and mic output for that source. Each output is
balanced low-impedance, and may be wired either balanced or unbalanced. All outputs may be used
simultaneously.

Wherever white or pink noise signals are needed, the ST-NG1 is the ideal choice. Use the ST-NG1
individually, or combine it with other RDL RACK-UP®, STICK-ON®, TX™, or FLAT-PAK™ series products
as part of a complete audio/video system.

RDL •• P.O. Box 1286 •• Carpinteria, CA., USA 93014 •• [phone] •• FAX [phone] •• http://www.rdlnet.com

STICK-ON® SERIES

Model ST-NG1
Random Noise Generator

Installation/Operation

EN55103-1 E1-E5; EN55103-2 E1-E4

Typical Performance reflects product at publication time
exclusive of EMC data, if any, supplied with product.
Specifications are subject to change without notice.

TYPICAL PERFORMANCE

Outputs (4):
White Noise (2):
Line Level (1): +4 dBu (nominal, balanced)
Mic Level (1): -45 dBu (balanced)
Pink Noise (2):
Line Level (1): +4 dBu (nominal, balanced)
Mic Level (1): -45 dBu (balanced)

Radio Design Labs Technical Support Centers

U.S.A. [phone], [phone]; Fax: [phone]

891-0104J

Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287

Gain:
Line Level: Off to +8 dBu (adjustable)
Mic Level: Off to -40 dBu (adjustable)
Noise Passband: 20 Hz to 20 kHz
Spectral Distribution: White and Pink Simultaneously
Power Requirement: 24 to 33 Vdc @ 30 mA
Dimensions: Height: 1.55 in. 3.94 cm
Width: 3.00 in. 7.62 cm
Depth: 0.65 in. 1.65 cm