diff --git a/pc_firm/dr_adc121s051/dr_adc121s051.c b/pc_firm/dr_adc121s051/dr_adc121s051.c
index 3e0e597..03d136b 100644
--- a/pc_firm/dr_adc121s051/dr_adc121s051.c
+++ b/pc_firm/dr_adc121s051/dr_adc121s051.c
@@ -795,6 +795,9 @@ dr_adc_err_t dr_adc_capture_channel_only(uint8_t freq_option, uint16_t delay_us,
     /* 채널 선택(MUX) : 1.3ms */
     dr_piezo_select_channel(piezo_ch);
 
+    /* MUX 전환 후 S/H 커패시터 안정화를 위한 dummy read */
+    (void)spim_read_raw();
+
     /* 채널당 반복 측정 횟수만큼 */
     for (uint16_t avg_iter = 0; avg_iter < averaging; avg_iter++)
     {