Use the SEL-9321 Low-Voltage DC power supply as an inexpensive, robust means to convert high-voltage dc battery sources for use with communications or instrumentation devices.
Transceiver Power Supply—Provide power to fiber-optic transceivers, like the SEL-2814 Fiber-Optic Transceivers With Hardware Flow Control, SEL-2812 Fiber-Optic Transceivers With IRIG-B, and SEL-3405 High-Accuracy IRIG-B Fiber-Optic Transceiver, as well as to the SEL-2886 EIA-232 to EIA-485 Interface Converter, when connected to devices that cannot provide power through their serial ports.
Communications Device Power Supply—Provide +5 Vdc and ±10 Vdc power to other communications or instrumentation devices. SEL provides cables that are 1.82 meters (6 feet) long with 2.5 mm or 0.7 mm power plugs.
The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.