Agilent Technologies 8453 Operator's Manual page 128

Figure 2
Line power switch with
green light
Theory of Operation
Instrument Description
Instrument Description
Your spectrophotometer is very easy to use. It has a line power indicator, a
status indicator and some push buttons. All electrical connections are made
at the rear of the instrument.
Front View
The front view of the spectrophotometer is shown in Figure 2. Notice that the
sample compartment is open. Unlike conventional instruments the Agilent
8453 does not suffer from ambient stray light. The open sample area makes it
easier to access for cuvette handling and to connect tubing to a flow cell or
thermostattable cell holder. The spectrophotometer is shipped with the
standard single-cell cell holder. Standard and accessory cell holders can be
removed and replaced in seconds with few or no tools.
Front View of Spectrophotometer
The line power switch is located at the lower-left part of the instrument.
Pressing it in turns on the instrument. It stays pressed in and shows a green
light when the instrument is turned on. When the line power switch stands
out and the green light is off, the instrument is turned off.
On the front panel of the spectrophotometer is a status indicator which will
display different colors depending of the actual condition of the instrument.
22
Indicator
Pushbuttons