Scale Factor (Sensitivity) -- The standard scale factor for the ARS-12 is 57,000 mV/(rad/sec). We can provide custom scale factors to order over a range of values.  Any other desired scale factor must be specified in mV/(rad/sec) or mV/(deg/sec). Increasing scale factors beyond the standard value will result in a reduction in frequency range. This product is smaller size and mass than the ARS-11 but has a higher noise floor and lower resolution with the same sensitivity.

Range -- The output signal range is determined by dividing the maximum output voltage by the scale factor. A higher scale factor will result in a more limited range. A standard ARS-12 with a 57,000 mV/(rad/sec) scale factor and an output power voltage of ±10 V will have an angular velocity range of ± 0.175 rad/sec.

Input Voltages (Excitation) -- Standard input voltages of + 5/-5 Vdc to +15/-15 Vdc are used for the ARS-12.  When the applications require operation from a single power source such a +12 Vdc, an ILC can be used to generate the dual voltage inputs to the sensor.

Signal Conditioning and Power Supply Requirements -- the ARS-12 may be operated without a separate power regulator or in-line signal conditioning unit if the standard customer power supply is well regulated and without noise, and if the sensor output cables are of proper impedance, not more than 15 to 20 feet in length, and not subject to induced noise from external emi sources. ATA Sensors supplies optional cables for the ARS-12 which have the proper connectors, use Teflon® insulated wire with twisted pairs and heavy metal shielding to minimize noise.

Cables and Connectors -- Two cable connection options are offered for the ARS-12. The cable CA-01 is specified when no ILC is used. Standard cable lengths are approximately 7 meters (23 feet) and this is supplied with the sensor mating connector on one end and un-terminated pigtail at the other to allow for the customer to add their own connection to measurement equipment.

The cable CA-02 is specified when an ILC box will be used.  This is a 5.5-meter cable, which goes from the sensor connector to the ILC box.  The ILC box utilizes a 4-pin military specification AirBorn® connector (male) MA-211-004-113-0000.  The output side of the ILC box uses a corresponding CA-03 cable, which is 1.5 meters in length, has an AirBorn® connector at the ILC box end, and a pigtail at the other end to allow customer interface connectors to be added. Custom machined connector housing allows the connector to be locked to the ILC using screws provided.

In-Line-Converter (ILC) -- modules are offered by ATA Sensors to provide a complete measurement solution for power regulation and signal conditioning / amplification. The ILC modules applicable to the ARS-12 are:

ILC-01xx -- This is a single sensor ILC unit which provides a DC/DC converter and signal conditioning / amplification in a single unit or a combination of these three functions. Units can only be configured at the time of manufacture, since they are fully encapsulated with special epoxy resins for ruggedness and durability at assembly. Signal conversion and gain options are exclusive; only one or the other may be specified.

•       As a power converter, the ILC will allow the user to supply a single excitation voltage (typically +10 to12 Vdc) and provides a bipolar voltage (±13.2 Vdc) output to the sensor.  The order number for an ILC for power conversion has the letter “D” as the ILC first option indicator.  If no power conversion is desired, the letter “N” is specified.  
  

•      As a signal conditioner, it will covert the standard angular velocity output of the sensor to an angular acceleration signal. (The calibration data sheet provided with the ILC-01DGA will specify the volts-per-volts output of the acceleration signal at 10 Hz. and at 100 Hz. This is a differential circuit. The gain at 100 Hz. will be ten times that at 10 Hz). The order number for an ILC for signal conversion from velocity to acceleration has the letter “A” as the second ILC option indicator. 
   

•      As an amplifier, the ILC will supply an amplified signal with gain of 1 to 1000 times normal signal output.  Standard versions are available in 1, 10, 100, or 1000 times gain. The order number for an ILC without additional gain (1x) is “F”.  The order number for an ILC for signal amplification from 1 to 10x has the letter “G” as the second ILC option indicator.  For gain from 1 to 100x, the letter “H” is specified.  For gain of 1000x, the letter “L” is specified.  (See examples below.)  Note that either gain or acceleration signal output can be supplied, not both.

ILC-03xx  -- This is a three channel ILC with functions equivalent to the ILC-01 functions and is designed to support a triaxial array with a single box.  The unit has separate input and output connectors for each of the three sensors plus two connectors for voltage input/velocity output and acceleration output. See the section on triaxial units for ILC-03 options.

Allowable ILC Order Numbers for ARS-12:

On a custom order basis, the ARS-12 can be supplied in a Triaxial kit, which has three ARS-12 sensors and a mounting block to make the triaxial system.  This can also have linear accelerometers added to make a 6 degree-of-freedom system.