User manual
Chapter 12 Troubleshooting RIGOL
DG4000 User's Guide
12-3
8) Check whether the test devices used are under the working conditions
specified in the corresponding manual.
9) Check whether all the connections are tight.
10) Check whether any cable has internal damage.
11) Make sure that the operations conform to the settings and processes
specified by the performance verification guide.
12) Check whether the error calculation is correct.
13) Get a correct understanding of the definition of "typical value" for this
product: the performance specifications of this product under the specified
conditions.