How do I configure signal strength in sending advertisement data?

Question

I'd like to minimize signal strength of nRF51822 chip in sending advertisement.
How do I configure? 
 Thanks in advance.

Håkon Alseth · Accepted Answer

Hi Ken, 
 You can configure the output power using the call "sd_ble_gap_tx_power_set", defined in file ble_gap.h: 
 /**@brief Set the radio's transmit power.
 *
 * @param[in] tx_power Radio transmit power in dBm (accepted values are -40, -30, -20, -16, -12, -8, -4, 0, and 4 dBm).
 *
 * @note -40 dBm will not actually give -40 dBm, but will instead be remapped to -30 dBm.
 *
 * @return @ref NRF_SUCCESS Successfully changed the transmit power.
 * @return @ref NRF_ERROR_INVALID_PARAM Invalid parameter(s) supplied.
 * @return @ref NRF_ERROR_BUSY The stack is busy, process pending events and retry.
 */
SVCALL(SD_BLE_GAP_TX_POWER_SET, uint32_t, sd_ble_gap_tx_power_set(int8_t tx_power));

 
 Best regards
Håkon