Heathkit IG-4505

The Heathkit Model lG-4505 Oscilloscope Calibrator is an
accurate, crystalAcontrolled, fast-rise square wave generator.
It provides you with the accurate time and amplitude signals
you need to calibrate Heathkit Oscilloscopes, as well as most
other oscilloscopes.

The time (or period) signals (.5 s to 1 us) are the fast-rise
(less than 4 ns) square waves you need to adjust oscilloscope
sweep speeds, delay line terminations, and high frequency
compensation. A terminated output cable prevents ringing
and assures a good frequency response of the time signal.

The accurate voltage signals (1 mV to 100 V) are used for
oscilloscope vertical calibration and attenuator
compensation.

The Calibrator also serves equally well as a bench standard.
It can be used to calibrate other test equipment or as a signal
source when you build or test experimental circuits.