IS200TAMBH1A

IS200TAMBH1A is an Acoustic Monitoring Terminal Board for the Mark VI system developed by General Electric. The CCSA or a third-party charge amplifier provides a mV output to the TAMB. The TAMB provides power to the charge amplifier via a current limited +24V or -24V supply or from an external source. Aside from electro-magnetic transient suppression, the differential input signal is routed directly to the VAMB via an 18-twisted-pair cable to the front edge of the Versa Module Eurocard (VME) card. Third-party vendors such as Bentley Nevada, Vibro-meter, GE/Reuter-Stokes, and others are supported by the TAMB.

Installation

• Each channel outputs current limited +24 V dc and +24 V dc power supplies. For the PCB sensors, a constant current source is connected to the SIGx line.
• When the signal is a logic-level low through a TAMB output, the input signal, CCSELx, is False. The output must be False (logic-level low) upon power-up, leaving the constant current output deselected until the configuration parameters are loaded.
• Each channel has a hardware jumper, JPx, where x is an even number, that allows you to choose between a current input, I IN, and a voltage input, V IN. The current input acts as a burden resistor for any 4-20 mA circuits connected to that channel, providing a 250 W load resistor.

Diagnostics

• The ID device on the TAMB terminal board is interrogated by the I/O board.
• The terminal board serial number, board type, revision number, and JR, JS, JT connector location are all encoded into a read-only chip. As part of the power-on diagnostics, this ID is checked.