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B
A system configuration making use of these optional curves may require
further showing of compliance for the KMH 820 for installation approval
b. GPS Sensor
The KMH 880 contains an embedded GPS-XPRESS Card sensor that pro-
duces validated navigational position data by continuous signal acquisition
and tracking of the navigational satellite network. The GPS Sensor
receives the C/A code signals transmitted by the satellite network on the L1
frequency of 1575.42 MHz. The sensor has 8 signal processing channels
allowing 8 satellites to be tracked simultaneously. At least 4 satellites must
be in view of the antenna for the sensor to operate. The GPS Sensor uses
data in the satellites' navigation messages to solve for latitude, longitude,
altitude, horizontal velocity, vertical velocity and current UTC.
GPS Data can also be supplied via the ARINC 743, 743A and RS 232
(KLN 94) interfaces.
A GPS Antenna Splitter could be used in liew of installing another antenna.
B. TAS System
1. TAS Modes of Operation
a. Setup Mode
The system shall be configured using an external PC via the Diagnostic
(RS 232) Interface. Reference the Appendices for the programming proce
dures.
b. Standby Mode
When the Standby mode is selected, the TAS Processor shall disable
surveillance and tracking operations.
The Standby mode may be activated by any of the following: discrete
selection, self-test, aircraft on ground (configuration option), or system failure.
c. Functional Test Mode
When the Functional Test mode is selected, the unit shall be placed into the
Standby mode and the Functional Test portion of BITE shall be performed.
Rev 3, August/2002
10609I03.CDL
KMH 880/KTA 870
Page 1-7
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