Codan MT-3 Technical Note

TN910 Rev 5-0-0 May 14
TN910 Codan MT-3 and IFR COM-120 Test Procedures
MT-3 Radio Systems
TECHNICAL NOTES
Page 11 of 16
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To set the IFR COM-120 receive audio fi lters, highlight LINE and select CONFIG as shown in Figure 12. Set up
the fi lters as shown in Figure 13. Hit RETURN to return to the RECEIVE window.
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Figure 12: IFR COM-120 Audio Filter Confi guration Figure 13: IFR COM-120 Audio Filter Selection
To set the IFR COM-120 AF Generator frequency and level, highlight AF GEN OUT and select ZOOM as shown in
Figure 14. Set up the GEN1 as shown in Figure 15. The Audio level of 0.43 Vp is 0.304 Vrms or -8.0 dBm. Hit
RETURN to return to the normal RECEIVE window.
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Figure 14: IFR COM-120 AF Generator Confi guration Figure 15: IFR COM-120 AF Level Selection
This will set the proper fi lters and audio levels for distortion and deviation measurements.
This product has been discontinued and is no longer manufactured by Codan Radio Communications

Codan MT-3 Specifications

General

Brand	Codan
Model	MT-3
Category	Receiver
Language	English