S.R.A. Developments Ltd

Duo Son Main

TECHNICAL SPECIFICATIONS FOR DUO SON

Power Supply
Input	90V 260V ac (50/60Hz)
Output	24V, 1.25A dc
Battery life	15 mins to 2 hours depending upon mode selection
Other
Modes	LF only, LF+HF (pulsed)
Weight	2kg
Dimensions	200 x250 x70 mm (w x d x h)
Class	BF
Display	Liquid Crystal Display
Standard	IEC 61689 (96)

	Low Frequency 45kHz	High Frequency 1MHz
ERA*	16.3cm²	0.38cm²
BNR	<6	<6
Beam Type	diverging	diverging
Power Settings	0.15W, 0.4W, 0.75W	0.07W, 0.14W
Maximum Intensity	47mW/cm²	2.1W/cm² (420mW/cm² pulse averaged)
Mode of Operation	continuous	pulsed 20% duty cycle

*ERA = Effective beam radiating area
BNR = Beam non-uniformity ratio
ERA & BNR are measured according to the standard shown

Beam Plot for low frequency		Beam Plot for high frequency
Click here for larger image		Click here for larger image

S.R.A. Developments Ltd
Bremridge House, Ashburton
South Devon, UK, TQ13 7JX
Telephone: +44 (0)1364 652426
Facsimile: +44 (0)1364 653589
Email: mail@sra-developments.co.uk