Specification 1.S/N : 2848J00604 2. Vintage : June, 1994 3. Consists (1) Main PC with Monitor, Keyboard and Mouse : HP Series 700i (2) Switching Matrix Controller : HP4084B (3) Modular DC Source / Monitor : HP4142B - 2 x Source / Monitor Unit (40uV-200V/20fA-1A) : HP41420A - 2 x Source / Monitor Unit (40uV-100V/200fA-100mA) : HP41421B - 1 x V Source / V Monitor Unit : HP41424A - 1 x Analog Feedback Unit : HP41425A (4) Precision LCR Meter (20Hz-1MHz) : HP4284A (5) Test Head (Switching Matrix) : HP4085A with 48 pins 4. Option : 026, 034, 060, 220, 310, 311, X36, 319, 400, 410, 411, X 2, 414, 415, 510