TECHNISONIC INDUSTRIES LIMITED
TDFM-9000 Installation Instructions
TiL 11RE442 Rev. D Issue 1
18
RESULTS
If the installed system passes all of the applicable EMI tests, then no further action is
required. If interference is observed, then the interference must be assessed against the
appropriate standards of airworthiness for the system in question. For example, it is
permissible for a VFR certified GPS to lose navigation capability while the TDFM-9000
unit is transmitting, providing that it recovers properly and promptly, but it is not
permissible for an IFR Approach certified GPS to be affected in the same way. A
complete discussion of all the standards of airworthiness to be applied in assessing EMI
effects is beyond the scope of this document.
PROCEDURE
A.
Operate the TDFM-9000 transmitter on the following frequency for at least 20 seconds.
Observe the GPS for any degradation in satellite status or availability or flags.
FREQUENCIES
GPS #1
GPS #2
TDFM-9000
PASS
FAIL
PASS
FAIL
143.2125 MHz
143.2250 MHz
157.5375 MHz
157.5500 MHz
512.0000 MHz
NOTES: