Section 6: Rechargeable battery measurements
Model 2460 Interactive SourceMeter® Instrument User's Manual
6-4
2460-900-01 Rev. A / September 2014
Device connections
To set up the test, connect the Model 2460 to the battery as shown in the following figure. Make a
4-wire (remote sense) connection from the instrument terminals to the battery to eliminate the effects
of the lead resistance. This allows you to measure the battery voltage as closely as possible to the
terminals of the instrument.
Figure 25: Schematic for the Model 2460 battery application
To prevent electric shock, test connections must be configured such that the user cannot
come in contact with conductors or any device under test (DUT) that is in contact with the
conductors. It is good practice to disconnect DUTs from the instrument before powering the
instrument. Safe installation requires proper shields, barriers, and grounding to prevent
contact with conductors.
There is no internal connection between protective earth (safety ground) and the LO
terminals of the Model 2460. Therefore, hazardous voltages (more than 30 V
rms
) can appear
on LO terminals. This can occur when the instrument is operating in any mode. To prevent
hazardous voltage from appearing on the LO terminals, connect the LO terminal to
protective earth if your application allows it. You can connect the LO terminal to the chassis
ground terminal on the front panel or the chassis ground screw terminal on the rear panel.
Note that the front-panel terminals are isolated from the rear-panel terminals. Therefore, if
you are using the front-panel terminals, ground to the front-panel LO terminal. If using the
rear-panel terminals, ground to the rear panel LO terminal.
The maximum input voltage between INPUT HI and INPUT LO is 105 V peak. Exceeding this
value may create a shock hazard.
The maximum common-mode voltage (the voltage between INPUT LO and chassis ground) is
250 V peak. Exceeding this value may cause a breakdown in insulation that can create a
shock hazard.
You can make test connections to the Model 2460 from the rear or front panel of the instrument.