Manufacturer of electronic instrumentation including signal conditioners, custom power supplies, computer controlled amplifiers and computer controlled signal conditioning instrumentation.



The Model 610 strain gage amplifier provides the performance characteristics and control for the most demanding applications.  Featuring  low output noise, user selectable gain and frequency response and a host of other conveniences,  the Model 610 offers maximum performance at a moderate price.


Bridge configuration: Quarter dynamic and full bridges are switch selectable on the front panel. Static and half bridges are selectable by changing the internal completion header. This unit also can be used as a general purpose differential amplifier
Bridge completion: Internal header mounts customer-specified precision completion resistors
Bridge excitation: Front panel adjustable 1.25VDC to 15.0VDC constant voltage excitation or fixed 15mA or 30mA constant current excitation; front panel on/off switch
Bridge balance: Front panel trimpot allows bridge to be manually balanced
Operating modes: Switch selects Zero, AC coupled, External cal signal, DC coupled, or DC cal
Gain: Front panel switch selectable gains of 1, 2, 5,10, 20, 50, 100, 200, 500, 1000, 2000, 5000 with gain vernier
Frequency response: DC to 50kHz, with board-mounted dip switch selectable two-pole active filter at 10Hz, 500Hz, 1kHz, 5kHz, 16kHz, and 32kHz -3dB frequencies
AC coupled response: Board-mounted toggle switch selects 10Hz highpass or 0.4Hz highpass filter
CC limit: Front panel LED lights if bridge wiring resistance exceeds constant current excitation capabilities
Output noise: 5 microvolts RMS RTI max, DC to 32kHz at G=1000
Power: Model 819-003 power supply module provides unregulated ±24V to all 610 modules in enclosure
Mechanical: 19″W x 5.25″H x 14″D, seven-module rack adapter, Model 4007-145
Carrying case: One- and two-module desktop cases, Model 4009-104 and Model 4010-106


Shunt cal
Activated by front panel Mode switch or remote  command; places internal  calibration resistors  across bridge
External cal
Activated by front panel Mode switch or remote command; signal applied to rear panel BNC is connected to amplifier input
Signal outputs:
±10V max., 100mA peak load
±10V max., 5mA peak load