The 6160 is a two-channel transducer amplifier-filter module. Each channel has isolated input and excitation, 50 kHz bandwidth and two outputs that can be filtered or wideband. Bandwidth of 100 kHz is optional. The Series 6100 Mainframe holds 32 channels, which is expandable to 1,024 channels. It is
available with RS-232, IEEE-488, USB or Ethernet interface and
software for Windows 2000 and XP.
The bridge input is ten-wire shielded; input (2), excitation (2), sense (2) and shunt calibration (4) with programmable
constant voltage or constant current excitation. Programmable bridge completion eliminates plug-in jumpers, loose resistors and component soldering. Automatic bridge balancing ahead of the instrumentation amplifier accommodates large unbalances without limiting gain or dynamic range.
The input and excitation are isolated from the outputs, power and control interface. This gives the user complete freedom to ground the input transducer without creating ground loops that introduce noise and offset errors. The isolation provides for operation with up to ±300 Volts of common mode applied to the input.
Specifications - Model 6160
Input
Two to ten wire plus shield; input (2), excitation (2), sense (2) and shunt calibration (4). Programmable bridge completion for half bridges and 120 Ohm and 350 Ohm quarter bridges. Other gage resistances by request.
Voltage Excitation
Programmable 0.1 to 20 Volts with 0.5 mV resolution. Calibrated 2-Volt steps ±0.1%.
Current Excitation
Programmable 0.1mA to 51.2 mA with 1 µA resolution. Calibrated 5 mA steps ±0.1%.
Balance
Automatic to ±0.05% of range ±1 mV RTO. Stability ±0.02% for 8 hours, ±0.005%/°C. Range set by resistor up to 25 mV/V, 2.5 mV/V (350 Ohms) installed.
Shunt Calibration
Two steps of single resistive shunt. Program selection of internal or external shunt connection. Optional 4-step shunt or ±32,768-step DAC shunt.
Voltage Calibration
Alternate input for external calibration source with programmable attenuation of 1, 0.1 and 0.01 ±0.02%.
Input Range
±2 mV to ±10 Volts full scale. Input protected to ±50 Volts.
Gain
Programmable from 1 to 5,000 with 0.05% resolution. Calibrated steps of 1, 2, 3, 5, 10 .... 5,000 with ±0.1% accuracy.
Static Accuracy
Typically ±0.02% for gains 1 to 1,000 after calibration.
Common Mode
60 dB plus gain in dB to 120 dB for balanced input and 110 dB for a 350 Ohm source unbalance, DC to 60 Hz.
Bandwidth
50 kHz (-3 dB), 100kHz (-3 dB) optional.
Standard Filter
Six-pole low-pass Bessel filter with bandwidths of 150 Hz, 625 Hz, 2.5 kHz, 10 kHz and wideband. Other filter frequencies are available on request.
Voltage/current excitation with remote sensing
