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Model 10A60-4
 Quad Voltage Conditioner

Input Type Description SPS6000 SPS8000 System 10
Voltage, Current Quad Voltage X*X
 X-X
 X*X


This general-purpose conditioner allows low-cost input of up to four miscellaneous external analog signals. Mixed as desired, these inputs may derive from DC-to-DC LVDT's, potentiometer-type sensors, and other 2-wire analog sources that provide their own power supply. Or they may represent the outputs of other instrument systems having various voltage levels and grounding configurations.

Using the Model 10A60-4 with DC-to-DC LVDT's to monitor wheel roundness Inputs can be either floating (differential) or grounded (single-ended). With differential inputs, generous common-mode range and excellent common-mode rejection eliminate ground-coupling errors and other problems normally associated with off-ground signal sources. Chopper-stabilized DC amplification with active low-pass filtering yields smooth and stable measurement of the true average value of the input variable, even in the face of substantial dynamic content.

When used in System 10, the 10A60-4 employs "two-point" ("deadweight") calibration only. The SPS6000 System allows "calculated" as well as "two-point" calibration of 10A60-4 data channels.

Specifications:
  • Transducer Types: 2-wire DC voltage sources, grounded or floating For multichannel VOLTAGE conditioning with real-time Analog Track-and-Hold, use Model 10A74-4C with Model 10VAC
  • Input Voltage Ranges: ±0.5, 1.0, 2.0, 5.0, 10, or 20 V-DC; automatically selected- on an individual channel basis- when the channel is configured
  • Amplifier (per channel):
      Normal-Mode Range: ±20 V operating; ±200 V without instrument damage
      Common-Mode Range: ±50 V operating; ±300 V without instrument damage
      Common-Mode Rejection Ratio: DC: -60 dB; at 60 Hz: -70 dB
      Input Impedance: Differential: 2 M-ohm; Common-Mode: 0.5 M-ohm
      Offset: Initial: ±0.5 mV; vs. Temperature: ±0.005 mV/°C; vs. Time: ±0.05 mV/month
      Gain Accuracy: ±0.02% of full scale typical, following calibration*
      Gain Stability: vs. Temperature: ±50 ppm/°C; vs. Time: ±50 ppm/month
  • Filter (per channel): 3-pole modified Butterworth; 3 dB down at 10 Hz; 60 dB down at 100 Hz
      Step-Response Settling Time (Full-Scale Output):
      To 1% of final value: 150 msec
      To 0.1% of final value: 200 msec
      To 0.02% of final value: 250 msec
  • Auxiliary Outputs: Filtered outputs available on wire-wrap pins
    *Initial (uncalibrated) inaccuracy may be as great as ±1.5% of full scale (see "Accuracy Specifications"). Maximum error that could occur upon replacement of a Model 10A60-4 not followed by calibration is ±3% of full scale.


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