Keithley 486 Instruction Manual page 64

SEClTON 3
Front Panel Operation
L-----------'
Model 8002A
'igure 3-10. V/l Ohms Connections (Source V Measure 1)
To make V/I ohms measurements, the Model 487 is con-
figured to source voltage and measure current (Source V
Measure I). The V/I feature simply performs the calcula-
tion (R = V/I) and displays the resistance reading in
ohms. The results of any source V measure I test can be
converted to resistance by using the V/I ohms function.
Paragraph 3.15 expands on tests that source voltage and
measure
current, and provides some examples that are
particularly applicable to the V/I ohms function.
CAUTION
To prevent damage to the instrument, ad-
here to the following precautions when
floating the input above chassis ground:
1. Do not connect ANALOG OUTPUT LO
to CHASSIS. If there is a ground lii in-
stalled at the rear panel binding posts, re-
move it.
2 Make sure that any monitoring ins&w
ment connected to the analog output is float-
tng.
Paragraph 3.16.8 explains the precautions for
floating measurements in more detail.
3-15