Figure 6-12 Discrete Out Page; Discrete Outputs - Garmin GTX 3X5 Installation Manual

DISCRETE OUT
Function
Off
ALT ALERT
All discrete outputs on P3251
Off
FAIL 1
P3251-17
Off
FAIL 2
All discrete outputs on P3251 or P3252
Off
RPLY ACTV
All discrete outputs on P3251 or P3252
Off
EQUIP STS
All discrete outputs on P3251 or P3252
Off
TRFC STBY
All discrete outputs on P3251
Off
TRFC TEST
All discrete outputs on P3251
Off
TRFC ALRT
All discrete outputs on P3251 or P3252
Off
TCAD SL
All discrete outputs on P3251 or P3252
190-01499-02
Rev. 4
Table 6-8 Discrete Outputs
Pin Selection

Figure 6-12 Discrete Out Page

Description
When this discrete is grounded, it indicates a
deviation from the preset altitude setting.
Failure of transponder causes discrete to
ground.
Failure of transponder causes discrete to open.
Discrete grounds when transponder sends
replies to interrogations.
If the unit needs service soon, this discrete will
switch between open and ground for the first 30
seconds after power up. If after 30 seconds,
there is no detection of ADS-B In/Out failures
the discrete opens. The discrete will ground if
any ADS-B In/Out failures are detected after 30
seconds.
Commands TAS/TCAS standby/operate.
Discrete output operation automatically sets
through TAS/TCAS input configuration.
GTX 345 only.
Commands TAS/TCAS into test mode.
GTX 345 only.
When a traffic alert is active, this discrete will
ground. GTX 345 only.
Supports automatic control and integration with
Ryan TCAD and Avidyne TAS600 Series traffic
systems. GTX 345 only.
GTX 3X5 Transponder TSO Installation Manual
Page 6-13