Keysight TS-5020 - System Capability DC Accuracy Sample

System Overview 3
TS-5020 Automotive Electronics Functional Test System Wiring Guide and Hardware Reference 3-5
DMM DC Accuracy + offset
+ relay V offset (DvmHi to abus1)
+ relay V offset (abus1 to Row matrix relay)
+ relay V offset (row matrix relay to abus2)
+ relay V offset (abus2 to DvmLo)
(This equals 4 relay offsets of 50uV each)
Calculated system capability = ±[(0.0045%*12.5 + 0.6 mV) + 4*50uV]
= ±1.36 mV