diff --git a/hardware/asix-sigma/asix-sigma.c b/hardware/asix-sigma/asix-sigma.c
index f356c848..b549c22f 100644
--- a/hardware/asix-sigma/asix-sigma.c
+++ b/hardware/asix-sigma/asix-sigma.c
@@ -1209,9 +1209,9 @@ static int hw_start_acquisition(int device_index, gpointer session_device_id)
 
 	sigma = sdi->priv;
 
-	/* If the samplerate has not been set, default to 50 MHz. */
+	/* If the samplerate has not been set, default to 200 KHz. */
 	if (sigma->cur_firmware == -1)
-		set_samplerate(sdi, MHZ(50));
+		set_samplerate(sdi, KHZ(200));
 
 	/* Enter trigger programming mode. */
 	sigma_set_register(WRITE_TRIGGER_SELECT1, 0x20, sigma);