Section 4: Sourcing and measuring
All measure connections should be considered to be hazardous.
The maximum floating (common mode) voltage for a source-measure unit (SMU) is ±250 V.
Exceeding this level may cause damage to the instrument and create a shock hazard.
Using an external source to float a SMU could create a shock hazard in the test circuit. A
shock hazard exists whenever >42 V
cables or insulators must be provided for all connections to prevent access to live parts.
When >42 V is present, the test circuit must be insulated for the voltage used or surrounded
by a metal safety shield that is connected to a known protective earth (safety ground) and
chassis ground (see
DUT connection settings
Make sure to properly configure the Series 2600B sense mode for the specific DUT test connection
scheme. Use care to configure the output-off state to supplement safe operation of your test setup.
Sense mode selection
The sense mode can be set to use
sensing connections
The default sense setting is 2-wire local.
Front panel sense mode selection
To check or change the sense mode from the front panel:
1. Press the CONFIG key.
2. Press the SRC or MEAS key. You can access and set the Series 2600B sense mode from either
the V-SOURCE or the V-MEAS menu items.
3. If you pressed the SRC key: select V-SOURCE > SENSE-MODE, and then press the ENTER key
or the navigation wheel
If you pressed the MEAS key: select V-MEAS > SENSE-MODE, and then press the ENTER key
or the navigation wheel
4. Select 2-WIRE or 4-WIRE as needed, and then press the ENTER key or the navigation wheel
4-52
Series 2600B System SourceMeter® Instrument Reference Manual
is present in the test circuit. Appropriately rated
PEAK
Safety shield
(on page 4-43)).
2-wire local sensing connections
(on page 4-32).
.
.
(on page 4-32) or
4-wire remote
2600BS-901-01 Rev. E / January 2019
.
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