Elpro Technologies 905U-D User Manual download pdf (Page 60)

905U-D Radio Modem User Manual

Man_905D_1.10.doc Page 60

S16

0-255

Transmit Hold-off Time

In msec (default = 0)

S17

0-255

Receive Hold-off Time

In msec (default = 0)

S18

0-255

Input buffer delay

Radio will not transmit until the number of

characters in the input buffer = 2 x S18

value - see below

S19

0-255

Input buffer delay override

Override time in msec to override S18 delay

- see below.

S20

0-255

Default system address

S21

0-255

Radio message signature /

lead-in tones

0, 1, 2 or 3

default = 1

set to 0 for old systems, set to 2 or 3 for

new systems suffering interference from

other 905U systems

S18 is calculated as S18 = (MP – (SR * (10*MP/RB + TD)) / 2 (Rounded up)

SB is serial baud Rate, (in bits per second)

SR is serial data Rate, (in bytes per second – usually 1/10

of SB)

RB is radio baud Rate, (in bits per second)

TD is transmit delay (0.028 for transparent/controlled mode, 0 for fast controlled mode)

MP is the maximum packet size to be transferred

NB is the maximum number of bit times delay allowed between characters in the protocol.

S19 is calculated as S19 = 1000 * (NB/SB) (Rounded up)

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Elpro Technologies 905U-D User Manual Page 60