The Personal Dosimeter Model 1630 is a miniature electronic dosimeter capable of solving a wide range of personal dose monitoring tasks; measurement of personal dose equivalent (DE), and personal dose equivalent rate (DER) of X-ray and gamma radiation. Real time data transfer capability allows use of Model1630 as a means of control/indication of DER and DE during endovascular surgical procedures/other procedures with the use of radiation sources and to maintain a database and perform control of personnel exposure for the period of stay in an operating room using Automated Personal Dosimetry System PM531.