ntp/util/tg2.c

2  * tg.c generate WWV or IRIG signals for test
5  * This program can generate audio signals that simulate the WWV/H
8  * intended to test the WWV/H driver (refclock_wwv.c) and the IRIG
24  * over the range 0-255. The signal generator by default uses WWV
34  * warning bit in the WWV/H timecode, so is handy to check for correct
39  * During operation the program displays the WWV/H timecode (9 digits)
43  * left to right. For WWV/H The leap warning L preceeds the first bit.
82  *   pulses for WWV format.
112  * - Corrected WWV(H) signal to leave "tick" sound off of 29th and 59th second of minute.
113  * - Adjusted verbose output format for WWV(H).
241 #define	WWV		(0)				/* WWV encoder */
246 #define	DATA0	(200)			/* WWV/H 0 pulse */
247 #define	DATA1	(500)			/* WWV/H 1 pulse */
248 #define PI		(800)			/* WWV/H PI pulse */
334  * WWV/H format (100-Hz, 9 digits, 1 m frame)
515 int	tone = 1000;		/* WWV sync frequency */
516 int HourTone = 1500;	/* WWV hour on-time frequency */
717 		case 'd':	/* set DST for summer (WWV/H only) / start with DST active (IRIG) */
721 		case 'f':	/* select format: i=IRIG-98 (default) 2=IRIG-2004 3-IRIG+IEEE-1344 w=WWV(H) */
827 		case 's':	/* set leap warning bit (WWV/H only) */
961 		printf ("\nFormat is WWV(H)...\n\n");
962 		encode = WWV;
1093 	 * For WWV/H and default time, carefully set the signal
1096 	case WWV:
1097 		printf("WWV time signal, starting point:\n");
1151 	 * once per minute for WWV/H and once per second for IRIG.
1372 			if (encode == WWV) {
1816 		 * The WWV/H second consists of 9 BCD digits of width-
1819 		case WWV:
2192  * Generate WWV/H 0 or 1 data pulse.
2200 	 * The WWV data pulse begins with 5 ms of 1000 Hz follwed by a
2207 	 * WWV/H radio clock worked much better.
2240  * Generate WWV/H 0 or 1 data pulse, with no tick, for 29th and 59th seconds
2248 	 * The WWV data pulse begins with 5 ms of 1000 Hz follwed by a
2255 	 * WWV/H radio clock worked much better.
2452 	printf ("\n\nTime Code Generation - IRIG-B or WWV, v%d.%d, %s dmw", VERSION, ISSUE, ISSUE_DATE);
2465 	printf (  "\n                                        w = WWV(H)");
2474 	printf (  "\n         -s                             Set leap warning bit (WWV[H] only)");
2475 	printf (  "\n         -t sync_frequency              WWV(H) on-time pulse tone frequency (default 1200)");
2476 	printf (  "\n         -u DUT1_offset                 Set WWV(H) DUT1 offset -7 to +7 (default 0)");