E0505

The E0505 is a pulse generator, made by IEMI in Bucharest and designed at the ICE research institute [1].

ICE’s laboratory for electronic instruments for measuring electrical quantities designed all the institute’s generations of oscilloscopes, voltmeters, multimeters, signal generators, frequency meters, logic analysers, RLC bridges and stabilised AC power supplies; they went into production at IEMI or in ICE’s own microproduction workshop, and equipped industrial laboratories and production lines as well as teaching and research laboratories [1]. In the 1970s and 1980s about half of the components of measuring instruments were imported; after 1980 about three quarters were Romanian [1].

It gives rectangular pulses from 5 Hz to 50 MHz; it was made after 1985 [2].

Its list price, set in 1984, was 24,000 lei [3].

Annex III.2.9 lists it in IEMI’s 1988 production, with a commercial prospectus and a price approved by the ministry. Its frequency, amplitude, edge times (5 ns – 0.5 ms), pulse width and delay (10 ns – 0.1 s) and DC offset (−2.5 … +2.5 V) could be set from the front panel or externally; it gave single, double, normal or complementary pulses at a BNC socket and was meant for testing digital and analogue circuits in automation, computing and industrial electronics. The table of characteristics gives 10 ns – 0.1 s for the edge times, the range the text gives for width and delay, and its dimensions read 107 × 414 × 373 mm (W × H × D) [4].