Infinition BR-3501 BR-3501 35 GHz Doppler Radar User Manual UserManual

Infinition Inc BR-3501 35 GHz Doppler Radar UserManual

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rEVISED USER MANUAL

BR-3501User Manual
Safety WarningBased on limits specified by the Federal Communication Commission (FCC) on Radio Fre-quency (RF) emissions in a general population environment, continued exposure to radiationshould be avoided within 1.1 meter in front of the radar. Radiation levels outside this regionfall within regulations of 1 mW/cm2 and are not considered safety hazards. When setting upthe antenna, special care should be taken to avoid situations where the antenna radiatestowards individuals. The antenna should be positioned such that bystanders are located behindthe antenna. During antenna setup, the antenna power cord should be unplugged to avoidaccidental hazardous exposures to radiations. Always turn the antenna transmitter off duringperiods of inactivity. SpecificationsInstallationThe BR-3501 radar system includes the following three components:• Radar antenna• Tripod• Tripod mounting adapterBefore attempting to install your radar, you should familiarize yourself with your new tripod and under-stand how the mounting adapter can be secured in place to hold the radar.Installation Steps:• Adjust your tripod to a convenient height and orientation.• Install the tripod mounting adapter under the base of the radar.• Mount the radar on the tripod ensuring that the mounting adapter is properly locked in place.• Adjust the radar height, tilt and inclination to you needs using the tripod controls.Operating Frequency 35 GHzNominal Transmitting Power 100 mWAntenna Gain 30 dBiTransmitter Stability ±0.1%Beam Width 4° x 4°Side Lobes -24 dBWeight 12 Kg!
OperationThe BR-3501 rear panel contains only three components:Power/Signal ConnectorThe BR-3501 is interfaced to a processing unit using a single six-wire cable equipped with militaryconnectors. This cable is used to provide power to the antenna, to carry the radar doppler signal to theprocessing unit and to carry the antenna transmission control. You should connect your radar cable fromthis connector to the appropiate radar input on your processing unit.The connector type is ITT Cannon MS3124E16-8P. The following table discribes the pinout of thisconnector:The remote activation of the transmitter can be achieved by short circuiting pins D and E of the connec-tor.Transmitter SwitchThe transmitter switch controls the state of the radar transmitter. When set to On, the radar will transmitthe radar signal. When set to Remote, the radar will not actually transmit until the system is armed. Thearmed state is controlled by the processing unit via the Power/Signal cable.Gain Adjustment KnobDepending on the type of projectile being tested, the amplitude of the return signal may vary greatly. Justthink of the returned signal of a 155mm projectile versus the returned signal of a 2mm fragment. TypicalDoppler processing units have a minimum dynamic range of 72 dB . The gain adjustment allows you tocontrol the level of amplification applied to the returned signal before it is output to a processing unit.The gain adjustment knob provides nine (9) gain levels ranging for 10 dB up to 90 dB. Having controlover the gain allows you to avoid very strong signals from being amplified outside the supported dy-namic range which would lead to a loss of information when processing. Similarly, it allows you themaximize the gain applied to a very weak signal returned by a small projectile.Pin FunctionA AC NeutralB 110 Volts ACC Not ConnectedD Remote Make (+ 5 Vdc Output)E Make GroundF Doppler Signal + (5 Vpp max.)G Doppler Signal - (5 Vpp max.)H Ground

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