Page 4-14
GTS 8XX/GPA 65 Installation Manual
Revision 4TP
190-00587-00
4.6.5 Active
High
Discrete Inputs
Pin Name
Connector
Pin
I/O
HEADING VALID
P8002
68
In
ANALOG RADAR ALTIMETER VALID
P8002 76 In
ACTIVE: 8 V
≤
Vin
≤
36 V
INACTIVE: 0 V
≤
Vin
≤
3.5 V, or Rin
≥
100k ohms
Sink current is internally limited to approximately 1 mA typical for an input connected to +28VDC.
4.6.6 Annunciator
Output
Pin Name
Connector
Pin
I/O
TA DISPLAY ENABLE*
P8002
50
Out
AURAL TA ALERT*
P8002 51
Out
VISUAL TA ALERT*
P8002 53
Out
TRAFFIC SYSTEM STATUS VALID*
P8002 54
Out
An asterisk (*) following a signal name denotes that the signal is Active Low.
ACTIVE: 0 V
≤
Vout
≤
0.5 V or Rout
≤
10 ohms, sinking up to 500 mA
INACTIVE: Rout
≥
100k ohms to ground, withstanding up to +36 VDC.
4.7
Mutual Suppression Bus
Pin Name
Connector
Pin
I/O
EXTERNAL SUPPRESSION I/O
P8002
48
I/O
Mutual Suppression Input/Output bus compliant with ARINC 735A Attachment 8, with the exception that
the maximum applied DC steady state voltage is +30.3V. Suppression I/O signal is pulsed under normal
operation.
