User's Manual

Hayes AT Reference
RFI-148 & RFI-900 High Output Power Paging Transmitters User Manual Page 77 of 134
ATS66=n sets Channel Width to n.
Enumeration values:
0 = 12.500 KHz
1 = 25.000 KHz
Can return the following error codes:
1 = Not a multiple of the raster.
2 = Not within bandwidth.
3 = Invalid channel.
4 = Channel frequency violation.
5 = Insufficient access rights.
6 = Cannot change while transmitting.
7 = Unsupported or restricted with this hardware.
Channel Table
Tx Freq (Stored)
Radio channel transmit frequency.
ATS55[a]: Returns the current value of Tx Freq.
ATS55[a]=n[.m].: Sets the value of Tx Freq to n MHz, given that 130.000000 <= n <= 1050.000000.
Where: a = Channel Table table index (starting from 1).
Can return the following error codes:
1 = Not a multiple of the raster.
2 = Not within bandwidth.
3 = Invalid channel.
4 = Channel frequency violation.
5 = Insufficient access rights.
6 = Cannot change while transmitting.
7 = Unsupported or restricted with this hardware.
Reference Menu
Current Reference
The current reference being used to generate channel frequencies.
ATI122: Returns the current value of Current Reference.
Enumeration values:
0 = Internal
1 = External
2 = Pending
External Reference
The state of the external reference.
ATI123: Returns the current value of External Reference.
Enumeration values:
0 = Detected
1 = Not Detected
2 = Pending
Reference Mode (Stored)
The reference selection method. 'Internal' uses the internal 10 MHz reference. 'External With Failover' will
attempt to use the external reference, but switch (until cleared) to the internal upon failure. 'External Only'
will always try and use the external reference but disable transmission when it cannot be locked to. 'External
When Available' will use External as a preference whenever present, while falling back to internal when
absent.