HP 4145B Semiconductor Parameter Analyzer With Floppy Disk and Software 135093608186 the timer LED starts cycling

the timer LED starts cycling from top to bottom

Manufacturer Analog Devices Model Number AD9528/PCBZ SKU 19-68612 Ref 23-100425

Manufacturer TEAC SKU 19-50171 Ref 23-71000

Manufacturer American DJ Model Number MB DMX II SKU 19-68573 Ref 23-97855

Manufacturer Leadtech Model Number DMC2410 SKU 19-26298 Ref 23-33098

HP 4145B Semiconductor Parameter Analyzer With Floppy Disk and Software 135093608186 the timer LED starts cyclingCondition Used Description This item is fully tested and in excellent working order. Item will come with a 30 Day Warranty. Cosmetically in good condition showing minor scuffs scratches blemishes from previous use. Includes Semiconductor Parameter Analyzer, Floppy Disk, and Software as pictured. No additional items or accessories are included. Unless pictured, no power adapter power cable included. Photos are of the actual unit for sale. Inventory is