Test apparatus

Test apparatus comprising: a connector ( 8 ) for connecting to the test apparatus ( 1 ) a system to be tested, a processor ( 2 ) for controlling the operation of the test apparatus and a user interface device ( 6 ) for presenting an interface to a user for the provision of input and output, a plurality of test routines ( 401, 402, 403 ), each defining a test to be performed on a system to be tested, each test routine having associated information relating to an input user interface ( 411, 412, 413 ) and an output user interface ( 421, 422, 423 ) to be presented to a user in response to the associated test routine being selected, the processor ( 2 ) being arranged, on selection of a particular test routine ( 401 ), to present to the user a user interface determined by the information ( 411, 421 ) associated with the selected test routine, the user interface being a simulation of the conventional test apparatus normally used to carry out the test routines on the system to be tested.