Electronic Load - Agilent Technologies 6571A Service Manual

Type
1
Digital Voltmeter
Current Monitor Resistor
DC Power Supply

Electronic Load

Oscilloscope
RMS Voltmeter
Variable-Voltage Transformer
GPIB Controller*
1
Required for Operation Verification Tests.
*Required for remote testing of 667xA models.
Electronic Load
Many of the test procedures require the use of a variable load capable of dissipating the required power. If a variable
resistor is used, switches must be used for connecting, disconnecting, and shorting the load resistor. For most tests, an
electronic load (see Table 2-1) is easier to use than a variable resistor. However, an electronic load may not be fast enough
for testing transient recovery time or may be too noisy for testing noise (PARD). In these cases, fixed load resistors of
suitable power dissipation can be used with minor changes to the test procedures given in this chapter.
12 Verification
Table 2-1. Test Equipment Required
Required Characteristics
Resolution: 10 nV @ 1V
Readout: 8 1/2 digits
Accuracy: 20 ppm
1
Agilent 6571A, 6671A:
0.001Ω ± 0.04%, 300A, 100W
Agilent 6572A-6575A, 6672A-
6675A
0.01Ω ± 0.04%, 100A, 100W
5V @10A
Range: Voltage and current range
must exceed that of supply under test.
Power: 2KW minimum
Agilent 6571A-6574A, 6671A-
6674A
Agilent 6575A, 6675A
Sensitivity: 1mV
Bandwidth Limit: 20MHz
Probe: 1:1 with RF tip
True RMS Bandwidth: 20MHz
Sensitivity: 100 µV
Power: 4KVA minimum
Range: -13% to +6% of input
Full GPIB capabilities
Recommended Model
Agilent 3458A
Guildline 9230/300
Guildline 9230/100
Agilent 6653A
(1) Agilent 6050B, mainframe with
(3) Agilent 6040A modules.
(2) Agilent 6050B, mainframe with
(3) Agilent 60507B modules plus
(1) Agilent 6051A mainframe with
(1) 60507B module.
Agilent 54504A
Agilent 3400B
HP Series 300 or Vectra with and
GPIB card