Agilent Technologies 1100 Series Reference Manual page 245

Introduction to the Detector 6
Diagnostic A/D Converter
The diagnostic A/D converter senses currents and voltages of the deuterium
and tungsten lamps and converts the analog signals into digital values. The
digital values are transferred via the control bus on the detector main board.
When values are outside the normal range, an appropriate error message is
generated and the lamps will be switched off.
Safety Switches
If the EPP foam is removed while the instrument is still on, the safety light
switches are activated and the deuterium lamp, the tungsten lamps and the
fan are switched off.
Interfaces
For detailed information on interfaces, see "Interfaces" on page 256.
Temperature Control
The G1315B/G165B detectors are equipped with a temperature control to
improve the baseline stability in unstable environments (e.g. strong variation
of the temperature due to air condition systems). A heater and a temperature
sensor assembly have been added and are controlled by the detector main
board and its firmware. The temperature at the fan is compared with a
temperature sensor on the main board. Depending on the difference the heater
in front of the fan is controlled. There are no parameters to be set for the
temperature control.
1100 Series DAD and MWD Reference Manual 245