Item powers on but is missing Heat-Sink Rear Panel
It's a stand alone combination test set that measures level, frequency, C-message circuit noise, noise-with-tone, channel signal-to-noise ration, 1 level impulse noise, and envelope delay, all with one instrument! Features speed and ease of testing and at only 26 lbs the 4942A is easily portable. A MASTER SLAVE Control transmission impairment testing faster and easier, a SLAVE unit can be controlled automatically from a MASTER unit.
Missing Heat-Sink Rear Panel