Embraer EMB145 Operation Manual page 2257

INTEGRATED NAVIGATION UNIT (RNZ-851)
The Integrated Navigation Unit is a complete self-contained navigation
system. The system consists of the VOR, localizer, glide slope and
marker beacon receiver modules, the ADF module, a six-channel
scanning DME module, and audio digitizers. The system also
incorporates two L-Band antenna (optional), two ADF antenna
(optional), two MB antenna, two VOR/ILS antenna and one GS dual
antenna.
The following modules are provided in this unit:
− VHF NAV Receiver Module (NV-850) - The VHF NAV receiver is a
module of the Integrated Navigation Unit and houses the major
navigation functions of the VOR/LOC receiver, glide slope receiver
and marker beacon receiver.
The ILS meets Category II instrument landing requirements.
Housed within the NAV receiver is a glideslope receiver which
provides 40 channels of glideslope information for the conventional
ILS. Also includes a 75 MHz marker beacon receiver which detects
and transmits the tones of the marker beacons to the Audio System.
− DME Transceiver Module (DM-850) - The DME module is a
six-channel DME that simultaneously tracks four selected channels
for distance, groundspeed and time to station as well as monitoring
two additional channels for the ident functions. This feature gives the
system the capability of tracking four channels and having the
decoded identifier readily available from two additional channels. The
unit dedicates two of the four selected channels to the FMS (if
installed). Thus, with the FMS installed, there are two remaining
channels to control and display ident, distance, time to station and
ground speed. Even with the FMS installed, the preset or standby
VOR channel, when selected, provides instant station identification
since it was one of the two additional channel being monitored.
− ADF Receiver Module - The ADF System comprises the ADF
receiver (DF-850) and the companion ADF antenna (AT-860). The
ADF receiver operates in the frequency ranges of 100 to 1799.5 kHz
and 2181 to 2183 kHz (marine emergency frequency range).
MARCH 30, 2001
AIRPLANE
OPERATIONS
MANUAL
NAVIGATION AND
COMMUNICATION
Page
1
2-18-09
Code
01