External Temperature (SST)

Purpose

Monitor periodically (~1HZ) the temperature within the FGD detector at the bus board position using the SSTProtocol.

Description

The ADT7486 provides one internal and 2 remote temperature sensor monitoring. The FEB64 has 4 devices for 8 remote temperature sensors. The 4 internal temperature are read out as well. The remote sensors are NP junction. The same device is used for the TEMP36 card and two reports can be found here Noel Wu's report , Blair Jamieson's report.

MSCB Registers

MSCB(23): Temp0     32bit F         21.7994 deg. celsius  (RO)
MSCB(24): Temp1     32bit F         21.7994 deg. celsius  (RO)
MSCB(25): Temp2     32bit F         21.8775 deg. celsius  (RO)
MSCB(26): Temp3     32bit F         21.7212 deg. celsius  (RO)
MSCB(27): Temp4     32bit F         21.8462 deg. celsius  (RO)
MSCB(28): Temp5     32bit F         21.7212 deg. celsius  (RO)
MSCB(29): Temp6     32bit F         21.8462 deg. celsius  (RO)
MSCB(30): Temp7     32bit F          21.815 deg. celsius  (RO)

MSCB(1): Error      16bit U               0 (0x0000) (RO)
FGD detector Temperature fault               0x0400
SST protocol error                           0x1000
read SST error                               0x2000

Condition

Board shutdown in case of over limit measurements around 30 degC. See FEB64 Limit parameters

Location

On the perimeter of the FGD each section one temperature sensor for every 8 consecutive MPPC mounted on the bus board.

DataSheets

Digital Temperature Sensor ADT7484A


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