MAINTENANCE GUIDE | MT-4E ANALOG & P25 DIGITAL RADIO SYSTEMS
Chapter 5: Codan Radio System Testing
Page 18
GENERAL SET-UP AND CONNECTIONS
Uploading Codan Confi gurations to the IFR 2975
The IFR 2975 allows for confi guration fi les to be saved and recalled on the test set. These confi guration
fi les are uploaded to the test set from a fl oppy disk and can also be uploaded from your computer if the
test set is connected to your network.
Firmware version 1.8.1 or higher is required on your IFR 2975 to use these confi guration fi les. To check
the fi rmware version of the IFR 2975, go to System (7) then Version (3). If Version 1.8.1 or higher is not
installed in the IFR 2975, go to www.P25.com for the latest update. On some fi rmware versions, the
fi les would be recalled with the MOD TYPE off . Update the fi rmware version or remember to turn the
MOD TYPE to FM or P25 after recalling a setup.
The IFR 2975 confi guration fi les are available from the Codan website at www.codancomms.com. The
fi le can be downloaded, then unzipped and copied onto a fl oppy disk or transferred onto the network.
If a Codan directory already exists on your IFR 2975 (for MT-4R/D testing), rename that directory or it
will be overwrittwen by the MT-4E Codan directory.
To upload a fi le from a fl oppy disk, insert the fl oppy disk into the drive and go to System (7) then Save
/ Recall Setups (6). Click on the BACKUP SETUPS button on the right hand side of the screen. In
the window that opens, click on the BACKUP TO button and select RESTORE FROM fl oppy. This will
download the Codan directory to the internal drive of your IFR 2975.
The recalled setups could aff ect some of the System Confi guration settings on the IFR 2975 (such as
the 10 MHz reference selection). You may need to change and re-save these saved fi les depending on
your system confi guration (eg. if you are using an EXTERNAL 10 MHz reference).
Please note that some of the setups that are recalled are generic and may need to be changed for your
specifi c receiver and transmitter settings.
The generic saved setups are as follows:
Audio = 1000 Hz @ 1.5 KHz deviation (for wideband set this to 3.0 KHz deviation)
CTCSS = 100.0 Hz @ 0.35 KHz deviation (for wideband set this to 0.5 KHz deviation)
NAC = 293
TGID = 1
Summary of Contents for MT-4E
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