FEATURES
 Programmable excitation with remote sensing |
| Programmable input configuration |
| Shunt and voltage calibration |
| Automatic balance and zero |
| Gains 1 to 5,000 with 0.05% accuracy |
| 10K Samples per second with 16-bit resolution |
DESCRIPTION
The 6038 input module has eight channels of programmable
transducer signal conditioning amplifiers, filters and digitizer. Each
channel has programmable voltage excitation, bridge completion and
balance, programmable gain instrumentation amplifier and four-pole
low pass filter. Channel outputs are multiplexed and digitized to 16
bits then provided to the 6000 data bus.
The 6038 is used with ¼, ½ and full bridge transducers,
potentiometers and low-level voltage signals. It is particularly suited
to strain gages and bridge transducers. A shielded eight-wire input
provides excitation, calibration and signal connections to the
transducer. Excitation is programmable from 0 to 12 Volts for each
channel. Remote sensing regulates excitation at the transducer
eliminating line losses. The effect of loading or a short on any other
channel is less than 0.01%. A calibration mode is provided to
measure the excitation voltage applied to the transducer.
| Unless noted, specifications apply to each channel individually |
| Input |
Two to eight wires with guard shield. Bridge configuration is programmable for quarter, half and full bridge transducers, 120 Ohm or 350 Ohm.
Input connector is 50-pin Type D Subminiature. |
| Excitation |
Programmable from 0 to 12 Volts in 1 ±0.1% Volt steps (same voltage for 8 channels), 70 mA per channel and 3.3 mV resolution adjustment. Stability is ±0.01%,
line and load regulation are ±0.1% for ±10% line and no-load to full-load using remote sensing. Calibration mode applies excitation voltage to the
amplifier input. |
| Balance |
Automatic by program control. Balance accuracy ±0.05% of range, ±1 mV RTO. Stability ±0.02% for 8 hours, ±0.005%/°C. |
| Input Range |
Range set by resistor up to 10 mV/V, ±5 mV/V (350 Ohms) installed. Input protected to ±50 Volts differential, ±50 Volts common mode. |
| Calibration |
Programmable attenuator with steps of 1, 0.1 and 0.01, ±0.01% accuracy. Single step shunt, either polarity, internal or external connection, 0.502 mV/V, ±0.1% installed. |
| Gain |
Programmable from 1 to 5,000 in 1, 2, 3, 5 steps with ±0.05% accuracy. |
| Static Accuracy |
±0.01% for gains less than 1,000, ±0.02% for gains 1,000 and higher. |
| Common Mode |
60 dB plus gain in dB up to 106 dB, DC to 60Hz for ±10 Volts. |
| Bandwidth and Filter |
1 kHz bandwidth. Four pole, low pass Butterworth. Other filter response characteristics are available. 10 Hz supplied unless
otherwise specified by the customer. |
| Sampling |
Up to 10k samples per second per channel. |
| ADC |
16-bits, two's complement output. |
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