SEL recommends selecting the SEL-3400 IRIG-B Distribution Module for demodulated IRIG-B in place of the SEL-IDM. For demodulated applications, the SEL-3400 provides time source redundancy, an expanded operating temperature range, and an easy-to-read LED display. SEL will continue to support and warranty the SEL-IDM.
Replacement product: SEL-3400 IRIG-B Distribution Module
The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.