MercuryiTC
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pressure in a cryogenic system. A maximum of eight of these boards can be fitted. Chapter
12 gives a full technical description.
The iTC automatically identifies every daughter board present.
Figure 4 Layout of MercuryiTC expansion slots
The location of daughter boards is subject to certain constraints, as given in the following table.
Board Allowed position Typical position
Level sensor Any 5
Auxiliary I/O Any 4
Temperature sensor not used to control heater Any
GPIB GPIB only
Heater 1, 2 or 3
Temperature sensor used to control heater 6, 7 or 8
Pressure Any
Interconnecting heater and temperature-sensor boards
A heater board is always associated with a temperature sensor board. The output of a heater
board is hard-wired to the 9-way D-connector on an associated temperature controller board. If
one or more heater boards are fitted, temperature sensor boards must be fitted in the
corresponding slots listed below.