RIGOL DG5000 Series - Manual (Page 207)

Chapter 12 Troubleshooting RIGOL
User’s Guide for DG5000 12-3
10) Check whether any cable has internal damage.
11) Make sure that the operations conform to the settings and processes which
are required by the performance verification manual.
12) Check whether the error calculation is correct.
13) Correctly understand the definition of “typical value” for this product: the
performance specification of this product under specified conditions.