Specifications

Performance Verification
Performance Verification
Voltage Programming and Readback Accuracy
Constant Voltage Load Effect
Constant Voltage Ripple and Noise
Transient Recovery Time
Current Programming and Readback Accuracy
Constant Current Load Effect
HAZARDOUS VOLTAGES The output may be enabled at turn-on, depending on the
*PON setting. Check this setting before attaching anything to the output terminals.
Introduction
The following types of performance verification tests are available:
l Self-Test A brief power-on self-test occurs automatically whenever you turn on the instrument. This limited test
assures that the instrument is operational. If a self test error occurs, do not perform the verification tests. For
details, see Self-Test Procedures.
l Performance Verification Tests Performance verification tests verify that the power supply is operating nor-
mally and meets its published specifications.
The performance verification tests are recommended as acceptance tests when you first receive the instrument. The
acceptance test results should be compared against the instrument specifications. After acceptance, you should repeat
the performance verification tests after every calibration interval.
Perform the verification tests before calibrating your power supply. If the power supply passes the verification tests, the
unit is operating within its calibration limits and does not need to be re-calibrated.
If the instrument fails any of the tests or if abnormal test results are obtained, try calibrating the unit. If calibration is
unsuccessful, return the unit to an Agilent Technologies Service Center.
Refer to Recommended Test Equipment and Setups for the equipment list and test setups required for verification.
Refer to the Measurement Techniques section for information about setting up the voltmeter, connecting the current
shunt, and connecting the electronic load.
HAZARDOUS VOLTAGES All models generate voltages in excess of 60 VDC, with some
models rated at up to 1,500 VDC! Ensure that all instrument connections, load wiring,
and load connections are either insulated or covered so that no accidental contact
with lethal output voltages can occur.
Always turn off the output when connecting or disconnecting any equipment on the
sense or output terminals of the unit.
Equipment Damage It is recommended to set the overvoltage protection function of the instru-
ment slightly higher than its operating point during the verification procedure. This will prevent
damage to any external equipment (electronic load, differential amplifier) that may occur if the out-
put voltage is accidentally programmed higher than the prescribed voltage setting.
Turn the unit off or send a Reset command after completing the verification procedure to return all
instrument settings to their default values.
Agilent N8900 Series Operating and Service Guide 123