Operating instructions
1892 1335 - Orion Radio Modem Operating Instructions - v2.9 / Aug 2009 81
APPENDIX C: ATT? PARAMETER STRING STRUCTURE
The Orion responds to the ATT? command by returning the data which could be obtained by
issuing all the read commands (those ending in a question mark). It is chiefly intended to be
read by a computer, and is therefore presented with few annotations.
The data is presented as a number of strings separated with <CRLF>, and each string
consists of a series of comma-separated fields. In some cases, several fields correspond to
a single AT register. For example, ATS3181? returns the three parameters Output number,
Failsafe level, Failsafe enable. Where a parameter is not applicable in the current
configuration, a (comma-separated) empty field is left in the string, for example 0,450,,1.
The order in which register contents are presented is shown in the table below. You can find
more details about each register and the significance of its values from the table of Appendix
A.
This table is for firmware 08.03.12, Date: 28/07/2008. Enhancements may change the parameters returned.
Param
no.
AT register Description
1 ATI9 Software version
2 ATI9 Software date
3 ATSN Serial number
4 ATI4 Append RSSI and DQ to message
5 ATB0 Baud rate on primary serial port
6 ATB1 Parity on primary serial port
7 ATB2 Hardware mode on primary serial port
8 ATB5 Data bits on primary serial port
9 ATB3 Baud rate on secondary serial port
10 ATB4 Parity on secondary serial port
11 ATS154 AT entry Guard time
12 ATRMT Radio module type
13 ATFC Comparison Frequency
14 ATFLB Bottom of switching bandwidth
15 ATFHB Top of switching bandwidth
16 ATS155 Centre frequency = Channel 0
17 ATS157 Channel number -99 to +99
18 ATS161 Channel step size
19 AT&F Operating Frequency
20 ATRXOFF TX to RX frequency offset
21 Calculated Rx Frq RX frequency (= AT&F + ATRXOFF)
22 ATFIF IF Frequency
23 ATS163 Over the air symbol rate
24 ATMTX TX start behaviour
25 ATS167 Inverted symbol state
26 ATS168 Squelch delay
27 ATS160 Power level
28 ATI10 Any test mode active
29 ATS162 Period between repetitions of test message
30 ATM0 Over air protocol
31 ATM1 Orion behaviour mode