Broadcom HEDS-9940PRGEVB USB to SPI Programmer Kits are designed for programming the AEDR-9940, a versatile three-channel reflective optical encoder. The Broadcom HEDS-9940PRGEVB kit includes a user-friendly USB to SPI interface and a dedicated PC-based program, AEDR_9940_Gateway.exe, which facilitates the programming process. The AEDR-9940 encoder offers selectable options for three-channel digital or analog differential A, B, and I outputs, with programmable interpolation values. The HEDS-9940PRGEVB kit streamlines the programming of desired interpolation factors into the encoder ASIC for enhanced flexibility and performance.