Condensed Consolidated Balance Sheets (USD $)	Jun. 30, 2012	Mar. 31, 2012
Current assets:
Cash and cash equivalents	$ 1,144,000	$ 2,674,000
Accounts receivable, less allowances of $74 and $58, respectively	2,195,000	2,132,000
Inventories, net	4,223,000	3,970,000
Prepaid expenses and other current assets	267,000	197,000
Total current assets	7,829,000	8,973,000
Machinery and equipment	3,550,000	3,516,000
Demo equipment	1,086,000	1,070,000
Furniture and fixtures	224,000	224,000
Leasehold improvements	372,000	372,000
Property and equipment, at cost	5,232,000	5,182,000
Less—accumulated depreciation and amortization	3,322,000	3,149,000
Total property and equipment, net	1,910,000	2,033,000
Other assets, net	77,000	77,000
Deferred debt cost, net	1,372,000	1,516,000
Total assets	11,188,000	12,599,000
Current liabilities:
Capital lease obligations	86,000	91,000
Accounts payable	828,000	587,000
Accrued expenses	834,000	944,000
Accrued compensation	800,000	657,000
Deferred revenue	170,000
Line of credit—related party	10,000,000	10,000,000
Capital lease obligations, net of current portion	78,000	97,000
Total liabilities	12,957,000	13,048,000
Commitments and Contingencies
Stockholders’ deficit:
Common stock, $0.01 par value Authorized—75,000 shares; issued and outstanding—46,143 shares and 45,396 shares, respectively	462,000	454,000
Additional paid-in capital	99,701,000	98,382,000
Treasury stock at cost, 7 shares of common stock	(14,000)	(14,000)
Accumulated deficit	(101,918,000)	(99,271,000)
Total stockholders’ deficit	(1,769,000)	(449,000)
Total liabilities and stockholders’ deficit	11,188,000	12,599,000
Advances from Customers [Member]
Current liabilities:
Deferred revenue	161,000	672,000
Total current liabilities	$ 2,879,000	$ 2,951,000