2-4
Connections
Model 6485 and 6487 User’s Manual
Voltage source output connectors
The rear panel V-SOURCE OUTPUT HI and LO connectors (see
are used to connect the voltage source to the DUT. The voltage source is primarily used
for ohms measurements. See
“Ohms measurement connections,” page 2-7
for details.
Maximum input levels
The maximum input levels to the Model 6487 are summarized in
.
WARNING
The maximum safe voltage between the voltage source or ammeter
common and chassis ground (common mode voltage) is 505V peak.
Exceeding this voltage can create a shock hazard.
Figure 2-4
Model 6487 maximum input levels
Input HI
Input LO
505V Peak
Chassis Ground
Max Continuous
Input = 505V Peak
505V Peak
Connecting cables and test leads
When making precision measurements, you should always use low-noise triax cables for
INPUT connections. As a general rule, always use the shortest possible cable for measure-
ments. When using the voltage source, the test leads must be rated for 505V minimum and
should include safety sheaths. See
“Model 6487 input cables, connectors, and adapters,”
in for recommended cables and test leads.
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