horiba FluoroMax-3, Operation Manual

Page: 95 / 220

FluoroMax-3 v. 3.1 (3 Mar 2006) Maintenance
6-11
Excitation monochro-
mator control board
Emission monochro-
mator control board
Sample
compartment
Excitation mono-
chromator direct drive
Emission monochro-
mator direct drive
Emission
PMT
Accessory control
board may be here
Photon-counting
module for PMT
AC
power,
DC sup-
plies, and
filters
Warning:
The information in this section does not consti-
tute permission to adjust, manipulate, or remove any
electrical or other components in the FluoroMax
®
-3.
This information is provided for reference purposes
only. Contact Spex
®
Fluorescence Service in case of
system failure or suspected failure, before attempting
repairs or testing with meters. DO NOT ATTEMPT
ANY REPAIRS OR INSTRUMENT EVALUATION
WITHOUT THE EXPRESS PERMISSION OF SPEX
®
FLUORESCENCE SERVICE.
The emission photomultiplier tube is coupled to a photon-counting acquisition module,
called a DM302. The photomultiplier tube’s housing contains a high-voltage supply
preset for the standard R928P photomultiplier tube. The DM302 is connected to the S-
channel input on the CTI board at P140. The reference detector is a silicon photodiode,
which has a current-acquisition module directly behind it. This module is connected to
the CTI board at P130. The silicon photodiode does not require high-voltage bias.
Each direct drive has the main-gear drive and stepper motor accessible on the bottom
platform. Power and optical sensors are interfaced with the respective 180F drive
board.