Model 2461 Calibration and Adjustment Manual
Section 2: Preparing for calibration verification and adjustment
2461-905-01 Rev. A / February 2016
2-3
Calibration and adjustment connections
Connections for Model 2461 calibration verification and adjustment are the same. The following topics
describe the connections you should use for the different ranges and functions.
Hazardous voltages may be present on all output and guard terminals. To prevent electrical
shock that could cause injury or death, never make or break connections to the Model 2461
while the instrument is powered on. Turn off the equipment from the front panel or
disconnect the main power cord from the rear of the Model 2461 before handling cables.
Putting the equipment into standby does not guarantee that the outputs are powered off if a
hardware or software fault occurs.
The maximum common-mode voltage (voltage between LO and chassis ground) is 250 V
peak
.
Exceeding this value may cause a breakdown in insulation, creating a shock hazard.
The front and rear terminals of the Model 2461 are rated for connection to circuits rated
Installation Category I only. Do not connect the Model 2461 terminals to CAT II, CAT III, or
CAT IV circuits. Connection of the SourceMeter
®
instrument input/output terminals to
circuits higher than CAT I can cause damage to the equipment or expose the operator to
hazardous voltage.
The maximum voltage between input/output HI and LO or 4-wire sense HI and LO is 210 V
peak
. The
maximum voltage between input/output HI and 4-wire sense HI or between input/output LO and
4-wire sense LO is 5 V. Exceeding these voltages may result in instrument damage.
