Telephonics Corporation
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I V I S I O N
TM113806 (3/10)
1-29
Detailed theory of operation, assembly, list of materials, and test procedures for the IU-1707A
Interface Unit can be found in the RDR-1700A Radar System Maintenance Manuals, TM114306.
1.5.5
IN-1502R, IN-1702A, and IN-1702B Radar Indicators
The Radar Indicator is the primary pilot interface with the radar system. The operator can view the
radar data, and with the 18 softkeys, the operator can control all functions of the radar system. The
RDR-1700A writes menus on the display next to one of the 18 softkeys. Upon pressing a softkey, the
menu item next to the softkey is activated. This menu item may change the radar mode of operation,
the radar overlay mode, radar pulse width, antenna tilt, receiver gain, or call up another menu screen.
Refer to the RDR-1700A Pilot’s Guide for radar control using the menu screens.
When selecting a radar display, the display must match all radar video and control standards in order
for the system to operate correctly. The following is a brief description of the radar display interface
for the RDR-1700A radar system.
The RDR-1700A Radar System has two STANAG 3350 B video outputs. STANAG 3350 B is a PAL
625 line Standard Video with three 75 ohm lines (Red, Green, and Blue) with sync on green. The
aspect ratio is not PAL standard, but is a 1:1 aspect ratio.
The RDR-1700A radar system has the ability to accept ARINC 429 control data from two ARINC 429
data sources. Each ARINC 429 control input to the radar system will expect control data for three
displays. This will require each Display Unit to monitor the other Display Units so that if a button is
pressed on a Display Unit, then the other Display Units will note the button press and then send that’s
units data to the radar system. If three Display Units are not installed, then the data for that Display
Unit will be set to No Computed Data.
1.5.6 JS-1709A
External
Joystick
The joystick shall have a push button on the top of it to permit system acceptance of on screen data by
the operator. The joystick can be used to offset the display center, to select a target for tracking, or to
select and mark a target for target data transmission to other avionics systems. Refer to the Pilot’s
Guide for joystick operation.
1.6
EQUIPMENT OPERATION AND CONTROLS
WARNING:
Do not operate the radar until you have carefully read and followed
all radiation safety precautions outlined in advisory circular AC 20-
68b, located in the preface at the front of this manual. Improper use or
exposure to microwave radiation can cause serious bodily injury.
The document reference is online, please check the correspondence between the online documentation and the printed version.
