6.3.4 Discretes Maintenance Page
The Discretes page (see Figure 6-5) shows all the discrete inputs.
A Discrete may be VALID-LOW or VALID-HIGH. In either case a 30K resistor
is connected to pull the signal to the invalid state (ground or aircraft power) as
applicable unless the valid signal is applied.
Figure 6-5: DISCRETES
82002-IM-L ST3400 INSTALLATION MANUAL 6-9
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