LTQ Orbitrap XL Hardware Manual

Power Supply 2 Board
Instrument Control Board
Table 1-5. Diagnostic LEDs of the Data Acquisition Analog board
Name Color Description Normal Operating Condition
+5 V Green +5 V voltage present On
-5 V Green -5 V voltage present On
+3.3 V Green +3.3 V voltage present On
Functional Description
Printed Circuit Boards
The power supply 2 board (P/N 206 1440) provides the supply voltages
for the data acquisition analog board. It is mounted to the back inside
the housing of the internal computer. See Figure 1-26 on page 1-34.
The diagnostic LEDs listed in Table 1-6 show the status of the voltages
applied to the board.
Table 1-6. Diagnostic LEDs of the Power Supply 2 board
Name Color Description Normal Operating Condition
+5.1 V Green +5.1 V voltage present On
-5.1 V Green -5.1 V voltage present On
+3.3 V Green +3.3 V voltage present On
Figure 1-29 shows the instrument control board (P/N 205 4221). The
instrument control board is located in a housing next to the internal
computer. It is connected to the LTQ Orbitrap XL main power.
The instrument control board is used to interface the LTQ XL control
electronics to the Orbitrap control electronics. Three signal lines are
passed from the LTQ XL: a digital, parallel (DAC) bus, a serial SPI bus,
and a Link Port Signal line. The instrument control board contains a
micro controller, digital and analog converters, and serial port
connectors.
On the instrument control board, analog signals from vacuum gauges
are converted to digital signals and passed to the data system as well as to
the power distribution board. (See page 1-39.) Turbopumps (Refer to
the topic “Vacuum System” on page 1-19.) are attached to a serial port
connector and this is connected via the signal lines to the linear ion trap.
Thermo Fisher Scientific LTQ Orbitrap XL Hardware Manual 1-37