ryan TCAD 9900B User Manual

Revision 4 - December 17,1998 Ryan TCAD 9900 Series Page 2-3
2.4 SUPPRESSION
Transponder and DME suppression are required for TCAD operation. TCAD sends and
receives positive-going suppression signals. The outgoing suppression amplitude is
approximately battery voltage.
DME suppression is used to insure the DME does not interfere with the transponder or
the TCAD. Interference that causes transponder squitter (unsolicited replies) from any
source reduces data available to the TCAD. See Transponder Suppression Section VI.
TCAD is compatible with both mutual and unidirectional suppression systems.
Figure 2-2 lists the availability of suppression for popular transponders.
TCAD suppression can be connected directly to any ARINC-standard mutual suppression
bus. Not all suppression busses conform to ARINC standards. See the Note below.
NOTE: Not all transponder suppression configurations conform to ARINC
standards. See Figure 2-16 for conformance information.
Manufacturer Model Suppression Remarks
ARC 359
459
859
1060
* Yes
*Yes
*Yes
Yes
*Can be modified to accept
suppression. Contact
Sigma Tek, Inc.
Collins TDR950
All Others
Yes
Yes
See Figure 2-16
See Figure 2-16
King KT-76
KT-78
KT-76A
KT-78A
All Others
None
None
Yes
Yes
Yes
Not compatible
Not compatible
See Figure 2-16
See Figure 2-16
See Figure 2-16
Narco AT50
AT50A
All Others
Yes
Yes
Yes
Terra Radair 250
TRT 250
Yes
Yes
Figure 2-2 Availability of Suppression for Popular Transponders

ryan TCAD 9900B Specifications

General

Brand	ryan
Model	TCAD 9900B
Category	Aircrafts
Language	English