Why Having a Shelf-Ready TCQA Changes the Game During an Outage

The DS200TCQAG1BHF arrives in original factory packaging, with no operating history — relevant because the TCQA is one of the busiest boards in the Mark V: it concentrates practically all of a core's analog instrumentation (LVDT, thermocouple, 4-20 mA, vibration, servo-valve), and an unplanned outage rarely leaves time for repair. Having the part ready to install cuts downtime compared to sending a used board out for testing.

What It Does

Mounted in position 2 of each of the <R>, <S>, and <T> cores, the TCQA scales and conditions the analog signals before making them available to the rest of the control logic. The board also carries an RS232 port (enabled by jumper J7) used specifically for board testing — a useful feature on the bench, but one that doesn't replace comparing the field values across all three cores.

Before Installing the New Board

• Compare the position of all six jumpers on the new board against the board being removed before energizing it — especially J1/J2 (mA output circuits) and J5/J6 (mA output range, 20 or 200 mA).
• Confirm the fault really was in the TCQA and not in a field sensor, terminal board, or the STCA that precedes the TCQA in the core's chain — swapping the board without that confirmation only repeats the symptom.
• Note the revisions installed in the other two cores to keep the set as uniform as possible.

Reading the Part Number

DS200TCQAG1B is the base; DS200TCQAG1BHF is the full revision on the label. Always provide the complete code when requesting a quote.

This Unit

New surplus in original factory packaging, with a 1-year warranty.

Details for Your Quote

• Full part number with suffix (photo of the old board's label)
• Destination core and the revisions of the other two cores
• Mark V Simplex or TMR
• Urgency of the outage

Request a quote through Request a Quote: response within 24 hours, worldwide DDP dispatch, purchase orders accepted.

• GE Speedtronic part number decoder
• GE Mark V DS200 collection