IS215VAMBH1A GE Acoustic Monitoring Input Board
Description:
IS215VAMBH1A is designed as GE Mark V Acoustic Monitoring (VAMB) board.  IS215VAMBH1A provides 18 channels of signal conditioning through two 9 channel acoustic monitoring terminal boards IS200TAMBH1ACB (TAMB) and one 18 channel I/O acoustic monitoring sub-assembly IS215VAMB (VAMB). The TAMB supports third party vendors such as, Bentley-Nevada , Vibro-meter, GE/Reuter-Stokes , and others.

The acoustic monitoring function for the frame 6, 7, or 9 size gas turbines issupported by the VAMB and either one or two TAMB terminal boards. IS215VAMBH1A receives an mV output from the CCSA or a third party charge amplifier. Power forthe charge amplifier is supplied by the TAMB using a current limited +24V or -24Vsupply or from an external source. Other than electro-magnetic transient suppression,the differential input signal is routed directly to the VAMB through a cable with 18twisted-pairs to the Versa Module Eurocard (VME) card front edge. 

There are 3 LEDs at the IS215VAMBH1A front panel to indicate the status information. Thenormal RUN condition is a flashing green, and FAIL is a solid red. 

The IS215VAMBH1A software features include:
18 channels of acoustic monitoring with
Synchronous sampling of all 18 channels of data
Configuration of TAMB terminal board controlling open circuit test
voltage and constant current mode
A/D gain and offset adjustment
De bias removal from dynamic pressure signal to maximize SNRProprietary fimmware functions
RMS calculation of the sampled AC signal data.