Terra TN 200D, Operation & Installation Manual

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Revision H
August 19, 1996
1
SECTION I
1. INTRODUCTION
1.1 SCOPE
This manual provides installation and operation instructions for the Terra by Trimble TN
200D Navigational Receiver manufactured by Trimble of Austin, Texas.
1.2 DESCRIPTION
The Terra by Trimble TN 200D is a small, lightweight, all solid state navigational receiver
available with and without a glideslope receiver. The digital frequency synthesizer provides
200 channels with 50 KHz spacing from 108.00 to 117.95 MHz. The receiver provides VOR/
LOC information to navigational converters while the glideslope receiver completes the ILS
capability and supplies remote DME channeling.
The TN 200D features microprocessor controlled frequency synthesizers that employ phase
lock loop circuits to generate local oscillator frequencies. Other features include a user
programmable 10 location memory, active and standby frequencies displayed on a planar gas
discharge display, an Ident-voice switch to filter station Ident from receiver audio and a
rotary frequency selector.
The receiver can be mounted in three different configurations: in a single tray, in a double
tray or in a 3" ATI hole using the 3" adapter. With tray mounted units, all power and control
connections are made to a 15 pin “D” type connector installed in the rear of the mounting
tray. A standard BNC male chassis connector is supplied on the tray for antenna
connections. For the 3" option a locking, hooded, 15 pin “D” type connector and standard
BNC male connector are used respectively for power/control and antenna interfacing. The
TN 200D is secured by means of a positive locking cam, accessible through the front panel.
The 3" option is mounted with a minimum of 3 screws through the instrument panel.
Weighing only 1.14 lb. (.517 kg) without the glideslope option and 1.43 lb (.649 kg) with
glideslope, the TN 200D measures 11.450" long, 3.125" wide and 1.625" high (29.083 cm x
7.938 cm x 4.128 cm). Panel cutout is a mere 3.03" x 1.54" (7.70 cm x 3.91 cm) and the
overall length of the unit is only 12.80" (32.50 cm) including the mounting tray.
Pulling only 300 mA of current without the glideslope receiver and 600 mA with the
glideslope option, the TN 200D operates at 13.75 VDC. Operation at 27.5 VDC is possible
by utilizing an optional Terra by Trimble MLC 28-5 power converter P/N 0900-3219-12.
The TN 200D is designed to work with standard aircraft auxiliary audio amp systems as per
wiring diagram, or a high impedance headset.