HP Car 3490A manual Model3490A

SectionIII

and'1.2 V, the I V range should be used for greater accuracy.

b. Connect External Reference(dc only) to EXT REF terminals.

c.Select DC or AC FUNCTION to correspondto input signalto be measured.

d.Set RANGE switch to desired range or to AUTO.

e.Connectinput signal(dc or ac). Input signalLow and External ReferenceLow must be at samepotential,

Model3490A

sincetheseterminalsare connectedinternally.

f.Read ratio display directly if I V EXT REF range is selectedIf. 10V EXT REFrangeisselected,multipiy displayby 0.1.

NOTE

Whenoperating in Autorange mode with less than full-rcale External Reference input

(<1 V or 110 V), the first readingfoiow- ing on uprangewill be incotect.

J - L -