--- a/kk-data-provider.c	Mon Mar 31 17:03:31 2014 +0200
+++ b/kk-data-provider.c	Mon Mar 31 17:03:31 2014 +0200
@@ -39,18 +39,18 @@
 
 	/* get serial port name configuration */
 	rv = Ini_GetStringIntoBuffer(configuration, "KK", "port", port, sizeof(port));
-	if (! rv)
+	if (rv < 1)
 		strncpy(port, DEFAULT_PORT, sizeof(port));
 	
 	/* channel number */
 	rv = Ini_GetInt(configuration, "KK", "nchan", &nchan);
-	if (! rv)
+	if (rv < 1)
 		nchan = DEFAULT_NCHAN;
 	
 	/* enable scrambler */
 	rv = Ini_GetInt(configuration, "KK", "scrambler", &scrambler);
-	if (! rv)
-		scrambler = FALSE;
+	if (rv < 1)
+		scrambler = 0;
 	
 	/* free */ 
 	Ini_Dispose(configuration);
@@ -140,7 +140,7 @@
 	/* scrambler */
 	cmd = "\x50";
 	cmd[0] += scrambler;
-	rv = FX_Send("\x50");
+	rv = FX_Send(cmd);
 	if (! rv) {
 		SendMessage(mainThreadId, FX_Error());
 		goto error;
@@ -171,7 +171,8 @@
 			break;
 		}
 		
-		if (strneq(resp, "2900", 4)) {
+		/* 2900 with scrambler off or 2910 with scrambler on */
+		if (strneq(resp, "29", 2)) {
 			
 			/* timestamp */
 			gettimeofday(&event.time, NULL);
@@ -200,10 +201,8 @@
 			   with some other information */
 		} else if (strneq(resp, "7020", 4)) {
 			/* undocumented packet. it probably reports the header for
-			   subsequent data packets. match it against expected value  */
-			if (strcmp(resp + 6, "$2900")) {
-				SendMessage(mainThreadId, "KK Counter: %s", resp);
-			}
+			   subsequent data packets */
+			SendMessage(mainThreadId, "KK Counter packet header: %s", resp + 7);
 		} else if (strneq(resp, "7F51", 4)) {
 			/* measurement interval synchronized */
 			SendMessage(mainThreadId, "KK Counter measurement interval synchronized");