Fuji Electric NRF51 User Manual page 29

4.4.3 USB communication function
4.4.3.1 Instructions for use
(1) Driver file should be installed in PC before starting USB communication.
Driver: CP210x USB to UART Bridge VCP Driver (Made by Silicon Laboratories)
URL: https://jp.silabs.com/developers/usb-to-uart-bridge-vcp-drivers
*URL information as of year 2020
(2) NRF51 should be connected PC with USB cable.
(3) Setting parameter can be changed by user with Dosimeter Configuration Tool in the same way as using
infrared communication. Also, NRF51 starts transmission of telemetry data periodically when USB
telemetry mode setting is "ON".
*It is recommended that USB telemetry mode "ON/OFF" setting is changed by using infrared
communication. If USB telemetry mode is "ON", setting configuration may be unstable by using USB
communication.
*Power is supplied by PC under USB connection.
(NRF51 doesn't have a function to charge batteries)
4.4.3.2 Specification
Communication standard: USB2.0
USB connector type: Micro-B
Recommended USB cable: CW-117MC (Made by Core Wave) or equivalent
*It may not work when use except for recommended USB cable
4.4.3.3 Icon display
USB icon
(1) USB icon turns on: Active (connection established)
(2) No icon: OFF
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