User guide

110 Advanced User Guide
5 Methods and Sequences
Suppose your standalone GC is equipped with a single FID. You
have created and saved methods that use this detector. Now you
remove the FID and install a TCD in its place. When you try to
load one of your stored methods, you observe an error message
saying that the method and the hardware do not match.
The problem is that the actual hardware is no longer the same
as the hardware configuration saved in the method. The method
cannot run because it does not know how to operate the
recently- added TCD.
On inspecting the method, you find that the detector- related
parameters have all been reset to the default values.
Correcting a method mismatch on a standalone GC
This problem can be avoided if you follow this procedure for any
hardware change, even including the simple replacement of a
defective detector board.
1 Before changing any hardware, press [Config][hardware
module], where [hardware module] is the device you intend to
replace.
2 Press [Mode/Type]. Select Remove module and press [Enter].
The module is now Unconfigured.
3 Turn the GC off.
4 Make the hardware change that you intended (in this
example, remove the FID and its flow module and replace
them with the TCD and its module).
5 Turn the GC on. Press [Config][hardware module].
6 Press [Mode/Type]. Select Install module and press [Enter]. The
GC will install the new hardware module, which corrects the
active method (but not the stored one!).
7 Save the corrected method using the same number (which
overwrites the stored method) or a new number (which
saves both versions of the method).