Plasma User Manual
Contents
1. SIN COS COS using a maximum cable length of 3 22 24AWG stranded wire Air Core Gauge 200 Q IMPORTANT Some Air Core movements found in automobile instrument clusters use gears in order to increase torque These types are not supported and must be replaced with standard Air Core Movements whereby the needle is mounted directly onto the shaft Calibration Procedure In order to calibrate the AC305A driver circuit use the USB12BITDAC exe test utility for use with the Dx10 8BIT DAC card or the USBDAC exe utility for use with the RXC amp NITRO card Both these utilities can be found in the USB toolkit 1 Set the output to OV Press the needle onto the Air Core Movement s shaft at the minimum position on the gauge SN e0 100 i20 aa re 746 kmn 140 60 B60 180 40 zisa 220 a 260 i 280 _ 2 Set the output to 5V Adjust the GAIN trimpot R3 so that the needle moves to the maximum position on the gauge AN so 100 20 ES 70 kmh 140 a 160 50 i 8 ao 200 30 220 240 260 10 a 280 A Beta Innovations c 2007 http www betainnovations com 2 Beta Innovations The Air Core driver circuit is now calibrated and will not need to be adjusted unless the physical range of the meter faceplate is changed Additional in software calibration may be required depending on the intended application Refer to accompanying software help file for details Mechanical Speci2. The AC305A circuit is designed to provide differential signals necessary to drive any suitable Air Core Movement with up to 305 range of meter deflection Suitable for simulation of various automotive and aircraft gauges Silent and fast Air Core Movements offer better performance over servo solutions Features Beta Innovations AC305A Air Core Driver Differential outputs provide fast response time and higher torque output for the pointer over PWM solutions Pin compatible with RXC NITRO expansion cards and Dx10 8BIT DAC card Output gain adjust Connecting the AC305A If you have purchased the AC305A driver with an Air Core Movement connect JP1 to the expansion card using a maximum cable length of 36 22 24 AWG stranded wire 12VDC GND Vin 5VDC NOTE The expansion card must supply the required 12VDC Connect the expansion card to a standard ATX power supply for the Dx10 8BIT card or plug a 12 16VDC 1A adapter to the J1 power connector if using the RXC or NITRO card If you have purchased only the AC305A driver circuit connect the SINE and COSINE outputs to any suitable Air Core movement such as those found on 2 most automobile instrument clusters Beta Innovations c 2007 http Awww betainnovations com Beta Innovations Determine the pins of the coil windings by measuring approximately 200 Ohms across the contacts with an ohmmeter Connect each contact pair to the AC305A output pads SIN
3. fications AC 305A BI C 2006 O U1 Rl D j L t R8 amp f H R5 E R4 900 00 660 O00 Oa 1950 00 f 2190 00 Visit www betainnovations com for the availability of expansion modules and accessories Beta Innovations c 2007 http www betainnovations com 3
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