Pulse Generator - Model 500

The Ludlum Model 500 Pulse generator provides the functions necessary for use in calibrating Ludlum radiation detection instruments as well as many other scaler/ratemeter instruments from other manufacturers. The adjustable output pulse rate is displayed on a three-digit LED readout. Potentiometers (both coarse and fine controls) and a multiplier switch provide rates from 1 to 9.9 x 106 counts per minute (cpm). Pulse amplitude is controlled by a multiplier switch and a LO/HI potentiometer, while pulse polarity is chosen by a selector switch. Amplitude may be varied between 0 and a negative or positive 5 volts; displayed on an analog meter. The high voltage of the instrument under test is displayed on an analog meter with markings of 0-2.5 kilovolts.

Other Versions of the Model 500-Series

  • Model 500-1:  Digital display for the HV and Pulse Rate with an Analog readout of the Pulse Amplitude
  • Model 500-2:  Digital display for the HV, Pulse Rate, and Pulse Amplitude