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GENERAL DESCRIPTION
2 - 6
2.6 Description of Interface Signals
The following 6 lines are used to transmit/receive signals between the equipment and the ADF.
REQ ......................Communication request signal (from equipment to the ADF)
DF-REQ ................Communication request signal (from the ADF to equipment)
DF-ACK.................Communication request acknowledging signal (from the ADF to equipment)
ACK.......................Communication request acknowledging signal (from equipment to the ADF)
TxD .......................Data transmitted from equipment to the ADF
RxD .......................Data transmitted from the ADF to equipment
Data communication (RxD and TxD) between the scanner and the ADF has adopted the serial commu-
nication system which does not allow checking using testing devices to see whether the signals are
transmitted/received properly in the field.
Fig. 2-5
RADF Equipment
RxD
ACK
DF-REQ
TxD
DF-ACK
REQ