An electronic subassembly designed to be plugged into one or more basic pieces of test equipment to extend the capabilities of the basic instrument. the basic instrument cannot function without one or more plug-in units (as required) in position.
NSN 6220-01-269-7887
NSN 6320-01-322-8249
NSN 5950-01-499-5941
NSN 5855-01-423-7473
NSN 6130-01-225-4101
NSN 5998-01-430-7248
NSN 6645-01-559-8314
NSN 6240-01-327-3239
NSN 4140-01-502-3345
NSN 6145-00-275-4046
NSN 6645-01-188-5237
NSN 5905-01-420-6349