Measuring the Mechanical Quality of Antenna Systems

The Radar Gyroscope and Inclinometer (RGI59x) and the Radar Timing Interface (RTI966), provide a tool to perform mechanical check-up and analysis of the antenna system.

The RGI59x basically has 2 co-related functions, measuring:

the quality of the encoder system• the leveling of the platform•

The RGI59x also allows you to evaluate the mechanical and structural design of the antenna support and tower under wind-loads, temperature, etc.The RGI59x measures the angular velocity and planar angle of the antenna. For this purpose the device is mounted on the rotating part of the (SSR or PSR) antenna and the data is logged in the RGI59x’s internal memory.

At the same time a RTI966 (Radar Timing Interface) installed close to the interrogator’s cabinet measures and records the azimuth information from the encoder (ACP and ARP).

Radar GYROSCOPE AND INCLINOMETER RGI596RADAR Timing Interface RTI966

After the recording, the RGI59x is taken down from the antenna and linked to the computer connected to the RTI966. The rotational information data combined with the encoder signal provide essential information on encoder accuracy and platform leveling. Note that deviation on the instantaneous azimuth (=encoder error) is measured, because biases (e.g. wind-load) are simultaneously recorded at encoder (RTI966) and antenna level (RGI59x). These two signals plus their difference are shown in the software.

Antenna start-up and stop are also recorded and provide information about the mechanical stiffness of the radar tower. The RGI59x works for any type of radar (SSR-PSR, fast or slow rotating).

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INTERSOFT ELECTRONICS NVLammerdries-Oost 27B-2250 Olen, Belgiumtel +32 14 23 18 11fax +32 14 23 19 44support@intersoft-electronics.com

IE-CD-00102-003 RGI596-RTI966.idd

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RADAR GYROSCOPE AND INCLINOMETER RGI596

INTERFACES-EXTERNAL CONNECTORSBNC for time synchronisation signalCharge connectorCharge LEDPPS LEDUSB connector

TECHNICAL SPECIFICATIONSGyro ModuleMax. Angular Rate -20 … + 140°/sResolution 18 bitSelf calibrated using the radars North and time referenceBatteryBattery Type NiMH 4,8V/1,2 AhOperating Current 250 mA typ.Battery Autonomy max 4h

100% at +10°C <-> + 30°C80% at 50°C20% at -20°C

Internal Charge ControllerInclino ModuleMeasuring Range ±20°Static Accuracy ±0,6° out to 20°Dynamic Accuracy ±0,02°Positioning12rpm radar within 1m of rotation center

of antenna6rpm radar within 4m of rotation center

of antenna

GENERAL SPECIFICATIONSCharge Temperature 0°C <-> +50°CDischarge Temperature -20°C <-> +50°CStorage Temperature 6 months 2 years

-40°C <-> +50°C-20°C <-> +35°C

Size 120x120x90 mmWeight 1,3Kg

RADAR TIMING INTERFACERTI966

INTERFACES-EXTERNAL CONNECTORSIn/Out DB9 male -

Differential Timing inputIn DB15HD female -

Single Ended Timing inputRB1/2 2x DB15HD female -

Timing Signals and PowerGPS DB9 female -

GPS interface for timestampingUSB USB2.0 B female

(480Mbit/s high speed)

TECHNICAL SPECIFICATIONSDifferential Timing InputRS422/RS2324 inputs or 4 outputs or 2 in- and 2 outputsSingle Ended Timing Input0...6 Volt, 2kΩSelectable trigger level, 4 inputsRASS Bus:RB1/2Timing signals TTL, 2kΩPower in/out 200mA, 15VConnects to power supply or other RASS-M device

GENERAL SPECIFICATIONSDimensions WxHxD (mm)

125x48x245

Weight 1.1kgOperating temperature

0°C...+ 40 °C