Honeywell ASPIRE-400 System Description, Installation And Maintenance Manual page 46

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
(3) The HPA supports the following functions:
(a)
(b)
(c)
(d)
(4) The L-band Tx Power Amplification provides the primary function RF signal amplification.
Control for gain settings and activation is defined by ARINC-429 [ID6] messaging from
the SDU. The RF performance, functional health and operational status is continuously
monitored and reported via ARINC-429 [ID6] messaging back to the SDU. In addition to
enabling the ARINC-429 [ID6] control and response, the processor manages the RF
Power Amplification through activation/deactivation current profile sequencing and
continuous gain optimization. A high level block diagram is shown in Figure 1-2.
EFFECTIVITY
ALL
© Honeywell International Inc. Do not copy without express permission of Honeywell.
ASPIRE-400
L-band Tx RF Power Amplification
Processor RF Power Management and Diagnostics
Power Supply Secondary Power Generation and Management from Aircraft
Primary Mains
Backplane - providing ARINC 600 [ID5] interface.
23-15-49
3rd rvw Draft as of:
29 January, 2020
Page 1-4
22 Apr 2019