Agilent Technologies 8453 Operator's Manual page 131

Theory of Operation
Instrument Description
system.
• The right CAN bus is used to connect the handheld controller of the Agilent
8453E UV-visible spectroscopy system to the spectrophotometer.
• The GPIB connector is used to connect the spectrophotometer with a
computer. The 8-bit configuration switch module next to the GPIB
connector determines the GPIB address of your spectrophotometer. The
switches are preset to a default address recognized by the operating
software from Agilent Technologies.
The GPIB port is not used when the handheld controller of the Agilent
8453E UV-visible spectroscopy system is connected to the
spectrophotometer. However, the 8-bit configuration switch of the port
must be set for GPIB communication.
• The MIO board slot is reserved for a LAN interface board.
• The accessory board slot is reserved for future use.
• The power input socket does not have a voltage selector because the
power supply has wide-ranging capability, for more information see
Chapter 1 "Specifications". There are no externally accessible fuses,
because automatic electronic fuses are implementeded in the power
supply. The security lever at the power input socket prevents that the
spectrophotometer cover is taken off when line power is still connected.
Side of the Instrument
On the right side of the instrument there is a door for exchanging the lamps.
Behind this plastic door there is another sheet-metal door. Two independant
safety light switches are implemented. They automatically turn off the lamps
when the sheet metal door is opened.
25