Abstract: An EMI shielded isolation chamber is provided, having an integral manipulator for manipulating electronic devices such as cell phones within the chamber, whereby a probe can be precisely positioned to selectively and directly actuate controls, switches, and keypads upon the devices anywhere in the chamber upon rotation of a probe tip. Extensible collapsible shielding boots are coupled between wall portions of the shielded chamber, adjacent a wall mounted manipulator support gimbal, and forward or rearward portions of the mechanical manipulator for preventing EMI signals from entering or leaving the shielded chamber. Alternatively, the gimbal constitutes the shielding device whereby a metallic hollow ball, slidably and rotatably supporting and containing the elongated manipulator, is mechanically biased snugly against a concave metallic member to block radiation from entering or leaving the shielded chamber.