Tektronix KEITHLEY SourceMeter 2606B Reference Manual page 87

Section 4: Operation Model 2606B System SourceMeter® Instrument Reference Manual
Input/output connectors
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The Keithley Instruments 2606B System SourceMeter instrument uses screw terminal connectors for
input and output connections to devices under test (DUTs).
You can remove a screw terminal connector from the rear panel by loosening the two captive
retaining screws and pulling it off the rear panel. Each screw in the terminal connector cable
2
assembly (used with the SMU connector) can accommodate from 24 AWG (0.2 mm ) to 12 AWG
2
(2.5 mm ) conductors.
Basic connection sequence:
1. With the output off and the connector uninstalled from the 2606B rear panel, make the wire
connections from a connector to the DUT.
2. Reinstall the connector onto the rear panel.
3. If using a screw terminal connector, tighten the two captive screws.
Hazardous voltages may be present on the output and guard terminals. To prevent electrical
shock that could cause injury or death, never make or break connections to the 2606B while
the output is on. Power off the equipment from the front panel or disconnect the main power
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cord from the rear of a System SourceMeter instrument before handling cables connected to
the outputs. Putting the equipment into standby does not guarantee the outputs are not
powered if a hardware or software fault occurs.
Maximum floating (common mode) voltage for a SMU is 250 V. Exceeding this level could
damage the instrument and create a shock hazard. See Floating a SMU (on page 4-12) later in
this section for details on floating the SMUs.
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The input/output connectors of the System SourceMeter instrument are rated for connection
to circuits rated Measurement Category O only, with transients rated less than 1500 V . Do
PEAK
not connect the 2606B terminals to CAT II, CAT III, or CAT IV circuits. Connections of the
input/output connectors to circuits higher than CAT I can cause damage to the equipment or
expose the operator to hazardous voltages.
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To prevent electric shock or damage to the System SourceMeter instrument, when
connecting to a source with a greater current capability than the 2606B, a user-supplied fuse,
rated at no more than 20 A SLO-BLO, should be installed in-line with the 2606B
input/output connectors.
4-4 2606B-901-01 Rev. C November 2021