8 Service and Maintenance
200 E364xA User’s and Service Guide
Resistive loads (R
L
) – For E3640A:
2.7 Ω,150 W/13.5 Ω,150 W
– For E3641A:
43.8 Ω, 300 W/120 Ω, 300 W
– For E3642A:
1.6 Ω, 300 W/8.0 Ω, 300 W
– For E3643A:
25 Ω, 300 W/75 Ω, 300 W
– For E3644A:
1.0 Ω, 300 W/5.0 Ω, 300 W
– For E3645A:
15.9 Ω, 300 W/46.2 Ω, 300 W
-Measure ripple and noise
Current monitoring
resistor (shunt) – R
M1
0.01 Ω, 0.1%
[a]
ISOTEK Co. model A-H
or equivalent
Constant current test setup
Current monitoring
resistor (shunt) – R
M2
0.2 Ω/250 Ω, 0.1%
[a]
ISOTEK Co. model RUG-Z
or equivalent
Measure current rms ripple
and noise
[a] To find the accurate resistance, it is recommended to use a current monitoring resistor after calibration.
Table 8-4 Recommended test equipment
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