10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110
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4-3
MAINTENANCE
5.
Set the resistor box to 10 Ω and operate the R1L-D1.
Check that the R1L-D1 reads between the resistor box 10
Ω setting’s actual value ± 0.0051 Ω in Auto-range. Then
step through the ranges to the 20 Ω manual range and
check that the R1L-D1 reads between the resistor box 10
Ω setting’s actual value ± 0.0051 Ω.
6.
Set the resistor box to 1 Ω and operate the R1L-D1.
Check that the R1L-D1 reads between the resistor box 1
Ω setting’s actual value ± 0.52 mΩ in Auto-range. Then
step through the ranges to the 2 Ω manual range and
check that the R1L-D1 reads between the resistor box 1
Ω setting’s actual value ± 0.52 mΩ.
7.
Set the resistor box to 0.1 Ω and operate the R1L-D1.
Check that the R1L-D1 reads between the resistor box
0.1 Ω setting’s actual value ± 0.065 mΩ in Auto-range.
Then step through the ranges to the 0.2 Ω manual range
and check that the R1L-D1 reads between the resistor
box 0.1 Ω setting’s actual value ± 0.065 mΩ.
8.
To check 3-wire operation, disconnect the wire between
the -E binding post and the resistor under test. Repeat
the tests listed in 4.4.3 and 4.4.4. Note that the accuracy
will be degraded if the lead from the +E binding post and
the +I lead do not have exactly the same resistance.
Other ranges are not specified.
9.
To check 2-wire operation, disconnect the wires between
the +E binding post and the resistor under test. (This
leaves only +I and –I wires connected). Repeat the tests
listed in 4.4.3 and 4.4.4. Note that the accuracy will be
degraded by the resistance of the leads. Other ranges are
not specified.
