At the back of the racks, the wiring required is to take the output from the filter banks to the dedisperser, search digitiser and msp timing digitiser. The available filter banks are summarised in the table 2.
The outputs of these filter banks and how they should be connected are shown
in Figure 4. The top panel shows the setup for the 
MHz filter bank. The other 4 filter banks use the setup
shown in the lower panel.
Figure 4: Plan of how cables should be connected from the filter banks to the
DDU, search digitiser and msp timing digitiser. The top panel shows the
setup for the MHz filter bank. The other 4
filter banks use the setup shown in the lower panel.
The tasks you need to do to change from 400/600 MHz timing to 1400 timing are:
MHz filter bank to
the 
MHz filter bank. The MHz filter bank has two copies of each output as shown in the top
left panel of Figure 4. You should remove the cables from the left
outputs and plug them into other filterbank.
A useful cross check that things are plugged in correctly is to run the search program (Section 8) with output set to none and the telescope errors check set to off. Then start up display (see Section 9) and run stats. If everything is correctly wired, you should see a mean level of 0.5.