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DNA-AO-358
DNA-AO-358
8-Channel Strain gage Simulator Board
 

The DNA-AO-358 and DNR-AO-358 are 8 channel, strain gage simulators designed for use in UEI’s popular Cube and RACKTangle chassis respectively. The boards are based on actual variable resistors and will precisely duplicate the behavior of the gages simulated.

The boards are an ideal solution for simulator applications where an on-board system device is expecting an strain gage as an input. The boards are also an excellent solution for testing and diagnosing errors in a variety of strain gage based systems.

The boards support simulation of full, half and quarter bridge gages and are available in standard 120, 350 and 1 kOhm configurations. Other resistance values are available on a special order basis. The DNx-AO-358 series is compatible with both DC and AC excitations and offers AC throughput bandwidth greater than 250 kHz.

All connections are made through a convenient 62-pin D connector ensuring OEMs will have no problems obtaining mating cables or connectors. Users may also connect the DNx-AO-358 boards to our popular DNA-STP-62 screw terminal panel via the DNA-CBL-62 cable. The cables are fully shielded and are available in 2.5, 10, and 20 foot lengths.
 
Characteristics:
  • 8 Simulated strain gages
  • Configured as Full, Half or Quarter bridge
  • 120, 350 and 1k Ohm standard configurations
  • AC or DC excitation
  • >250 kHz bandwidth
  • Wide ±15 V excitation range
  • On-board A/D converter monitors excitation voltage
 
Technical Specifications
Configuration
Number of Channels 8
Bridge configurations Full or Half/Quarter bridge
Strain Resistances 120, 350 and 1k Ω standard, other 
resistances available as special orders
Max / Min Excitation Voltage +15 / -15 VDC (3 W max bridge power Note 1 below/left)
Resistance Specifications
Nominal resistance Variable resistor ± 1.0 %
Bridge completion resistors ± 0.1 %
Full scale resistance range ±1.5%
Resolution 120 Ω gauges 0.46 mΩ
350 Ω gauges 1.33 mΩ
1 kΩ gauges 3.82 mΩ
Output resistance non-linearity 0.005% max
Dynamic Specifications
Excitation frequency DC to 25 kHz
System bandwidth 250 kHz, minimum
Resistance change update rate 0 - 5 kHz
Excitation Monitor Specifications
Monitor Accuracy ±10 mV
General
Power consumption <3W, not including bridge IR dis
Operating range Tested -40 to +85 °C
Humidity range 0-95%, non-condensing
Vibration IEC 60068-2-6 5 g, 10-500 Hz, sinusoidal
IEC 60068-2-64 5 g (rms), 10-500 Hz, broad-band random
Shock IEC 60068-2-27 50 g, 3 ms half sine, 18 shocks @ 6 orientations
30 g, 11 ms half sine, 18 shocks @ 6 orientations
Altitude to 70,000 feet
MTBF greater than 250,000 hours