Omron DDAA1000/SRM manual Xmit Rate, RF Data Rate

DDAA1000/SRM User Guide

Table 6: Maximum Packet Size Settings where RF Data Rate=2

Maximum Setting

		0	1	2	3	4	5	6	7	8	9
	0	15	36	58	79	100	121	143	164	185	206
	1
		20	42	63	84	105	127	148	169	190	212
	2
		26	47	68	90	111	132	153	175	196	217
Setting	3
		31	52	74	95	116	137	159	180	201	222
	4
Minimum		36	58	79	100	121	143	164	185	206	228
	6
		47	68	90	111	132	153	175	196	217	238
	5	42	63	84	105	127	148	169	190	212	233
	7
		52	74	95	116	137	159	180	201	222	244
	8
		58	79	100	121	143	164	185	206	228	249
	9
		63	84	95	127	148	169	190	212	233	254

(3) Xmit Rate

There are two settings for the Transmit Rate parameter. For normal operation the DDAA1000/SRM should be set at Transmit Rate 1. Transmit Rate 0 is useful to qualitatively gauge signal strength. When set to Transmit Rate 0 the radio modems will transmit data back and forth continuously, and the strength of the signal may be gauged by viewing the Show Radio Statistics option.

Due to the fact that the radio modems transmit continuously when Transmit Rate is set to 0 (whether or not they have data to send) they use radio frequency spectrum unnecessarily. Therefore, Transmit Rate 0 should be used only as a diagnostic tool and not for normal operation.

(4) RF Data Rate

The DDAA1000/SRM has two settings for the RF Data Rate (not to be confused with the RS232 Baud Rate). Setting 2 should be used when the radio modems are close together and data throughput is to be optimized. Setting 3 should be used when the radio modems are farther away and a solid data link is preferred over data throughput.

Note: The RF Data Rate setting must be identical for all units in the system. Any radio modem with a different RF Data Rate than the master will not establish a communication link.

30 DATA-LINC GROUP

PN 161-09981-002C

rev 8/04