Many Avtech pulser generators require 50 Ohm load impedances. When driving a laser diode, the resistance must be added in series with the diode. Most of the pulse generator output power will be dissipated in the series resistance, rather than the diode, so a high power rating is sometimes required. The fan-cooled AVX-RL3 series is provided for that purpose. The AVX-RL3 is available in resistances of 10 and 50 Ohms. The input connector is SMA female. The output signal and a ground connection are provided on two solder terminals, spaced approximately 1.5 cm apart. Different connector arrangements can be provided upon request. A DB-9 female connector provides power to the internal fans (+24V to pins 6 and 7, ground to pins 8 and 9) and provides access to a thermistor (pins 1 and 2) thermally bonded to the resistance.
