UPS Aviation Technologies AT7000, Руководство по установке

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Installation Installation Manual
Page 26 560-0405-00 Rev –
December 14, 2001
© 2001 by UPS Aviation Technologies Inc.
Series isolation diodes are included on all discrete inputs.
3.5.1.2 Discrete Outputs
The discrete outputs, unless otherwise defined, are open drain outputs. When active,
the output will be pulled low to ground. When inactive, the output be open (or pulled
high to 28 volts with 100K ohm).
Active.................... pulled low to ground
Inactive.................. open (100k pull-up)
3.5.1.3 Valid Flag Inputs
The valid flag inputs are intended for connection to valid superflag outputs on con-
nected equipment. The levels for these inputs are as follows:
Valid...................... > 18 volts DC input relative to ground
Invalid ................... < 3.5 volts DC input relative to ground
3.5.2 Gillham Code Altitude Input
The transponder allows connection to an altitude source using the 11 wire Gillham
code interface. Two inputs are provided, and the source can be selected with the alti-
tude source discrete input, see 3.5.9.
3.5.3 Synchro Altitude Input
The altitude information for the transponder may be obtained from an analog synchro
altitude interface.
3.5.3.1 Synchro Valid Flag Input
The synchro valid flag inputs are used to indicate the validity of the corresponding
synchro input. The transponder will not use the synchro altitude if the valid flag input
indicates an invalid condition. The synchro valid flag is a high level input.
3.5.4 ARINC 706 Air Data Inputs
The altitude information for the transponder may be obtained from an ARINC 706 air
data system via two low speed ARINC 429 data busses.
3.5.5 Control Panel Input
The control panel data may be entered into the transponder on either of two low speed
ARINC 429 data busses (Ports A and B). The port is selected by the control data port
select discrete input. See paragraph 3.5.5.1.
3.5.5.1 Control Panel Port Selection
The control port selection input is used to select which control panel port the trans-
ponder will use:
Ground ..................uses control panel port A
Open......................used control panel port B