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B
Performance Test and Calibration Procedures
Introduction
This appendix contains test procedures for checking the operation and calibration of the Agilent N330xA Series
Electronic Load Modules. The tests are performed using the front panel keypad of the N3300A or N3301A
Mainframes. The required test equipment is listed in Table B-1 and sample performance test record cards are
included at the end of the performance test section. The performance tests confirm the Agilent N330xA Series
Electronic Load Modules meet all their published specifications.
The calibration ( adjustment ) procedures create new calibration constants to bring the current, voltage and
resistance values within specifications. Calibration cannot be performed using the front panel keypad, an IEEE-
488 ( GPIB ) controller is required. Note that the Electronic Load Mainframe does not require calibration.
Important Perform the verification procedures before calibrating your Electronic Load Module. If the
Electronic Load Module passes the verification procedures, the unit is operating within its
calibration limits and does not need to be re-calibrated.
If the electronic load requires service, refer to the list of Agilent Sales and Support Offices at the back of this
manual.
Equipment Required
The equipment listed in the following table, or the equivalent to this equipment, is required for verification and
calibration. An IEEE-488.2 controller is not required for verification.
Table B-1. Equipment Required
Equipment
Characteristics Recommended Models
Current Shunts
1
0.1 Ohms @ 15 Amps, 0.04% @ 25 watts
0.01 Ohms @ 100 Amps, 0.04% @ 100 watts
0.001 Ohms @ 300 Amps, 0.04% @ 100 watts
Guildline 9230/15
Guildline 9230/100
Guildline 9230/300
Voltmeter DC accuracy 0.01% 5 digit Agilent 34401A or 3458A
Current Probe DC to 100Arms - DC to 100kHz Agilent 1146A
Oscilloscope Agilent 54520A
Power Source 61Vdc / 61A minimum ( N3302A, N3304A, N3306A )
20Vdc / 143A minimum ( N3305A, N3306A )
241Vdc / 10A minimum ( N3303A, N3305A )
6032A or equivalent
6031A or equivalent
6035A
Controller GPIB ( IEEE 488.2 ) HP Series 200/300 or
PC with HP 82341 IEEE
488.2 Interface card and
Basic for Windows or equiv.
1
A 4-terminal resistor ( current shunt ) is required to eliminate output current measurement errors caused by voltage drops in the load
leads and connections.