Installation and Maintenance Using Modules
214 Agilent 8163A Lightwave Multimeter, Agilent 8164A Lightwave Measurement 
System, & Agilent 8166A Lightwave Multichannel System, Fourth Edition
Make sure that the instrument is in stand-by mode, see page 202, before you 
remove a module.
1 Position the module at the rear of the instrument as shown in Figure 164.
2 Insert the module into the mainframe, using the handle, being careful to keep 
the module completely flat. If the module does not slide freely, check that you 
have correctly oriented it and that there is no obstruction to its movement.
CAUTION If you insert the module at an angle or vertically, you may damage the instrument 
and the module. You should insert the module along the direction shown by the 
arrow in Figure 164.
3 Apply pressure to the handle, and push the module as far as it goes. You hear a 
small click when the module reaches its installed position. This is the catch 
making contact.
4 Tighten retaining screws, to hold module in place.
Figure 164 Fitting a Back-Loadable Module
      Tighten Retaining Screws
Insert module 
along the direction shown 
by this arrow