Datasheet

A2
Vishay Micro-Measurements
Document Number: 11005 [e-mail] www.vishaymg.com
Revision 24-Aug-06 13
Signal Conditioning Amplifier System
MODEL A2-MC-8 CONTROLLER
Supports hardware identification, setup and output data
monitoring of each type of plug-in card via a local keyboard
interface or remotely via an Ethernet Interface. Each
controller supports 8 channels of signal conditioning and up
to 128 channels of signal conditioning when expansion
cabinets are added.
Front Panel User Interface:
Membrane keypad with illuminated 128 x 64 pixel FSTN
positive, gray transflective LCD.
Communication Interface:
Physical: 10/100 Base-T
Protocol: HTTP
IP Addressing: Static. Configurable by the front panel
controls
Size:
17” W X 12” D X 8.5”H [43.2cm W x 30.5cm D x 21.6cm H]
Weight:
12.6lbs [5.7kg]
MODEL A2-SG-8-BX STRAIN GAGE CARD
(Specify Model A2-SG-8-BW (with Butterworth filter
characteristics) or Model A2-SG-8-BS (with Bessel filter
characteristics).
These specifications apply for each of eight independent
channels of signal conditioning per removable card.
Amp Input:
Inputs:
Quarter (120 ohms, 350 ohms, and 1000 ohms), half and
full bridge (50-1000 ohms).
Bridge completion resistors are provided for quarter-
bridge circuits.
Input Impedance:
>100 MΩ
Source Current:
±5nA typical; ±10nA max.
Amplifier:
Zero Temperature Stability:
±1.7μV/°C RTI*, ±100μV/°C RTO*, after 30-minute
warm-up.
Input Range:
4 to 80mV full-scale input range (x2500 to x125) -
adjustable by software control per channel.
Output Range:
±10V into 600Ω minimum load (When powered from
15VDC)
DC Gain Accuracy & Stability:
±0.10%; ±50ppm/°C
Common-Mode Rejection (DC to 100Hz):
105dB typical
Common-Mode Voltage:
±10V typical
Bandpass:
Full Power Frequency response DC to 110kHz; -3dB.
(Wideband operation)
Slew Rate: 7V/µs
Dynamic Characteristics:
Noise RTI:
1µV p-p at 0.1Hz to 10Hz;
6µV RMS at 0.1Hz to 110kHz
.
Total Harmonic Distortion:
0.014% at 1kHz
Filter:
Type:
Software settable 5th order filter - DC to 40kHz max: -3dB.
(Butterworth or Bessel characteristics)
Settings:
Wideband, 40kHz, 20kHz, 10kHz, 5kHz, 1kHz, 100Hz,
and 10Hz Software-programmable per channel.
Bridge Excitation:
Type:
Constant voltage
Settings:
0.0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0,
6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5 and 10.0VDC.
Software-programmable per channel.
Accuracy:
±3mV typical