Adjustment Procedures
d.
Make the maximum voltage tracking adjustment:
• Adjust
VR501
until the voltage output of the Slave output matches
the reading obtained from the Master output.
wore
Recheck the value of the Master output compared to the value of
the Slave output. Readjust
VR501
if the outputs do not match.
Disconnect the test setup.
Parallel Tracking Equipment
Required:
Digital multimeter
ModG See Figure
5-1
on page 5-8 for adjustment locations used in this procedure.
1.
Adjust the parallel tracking Mode:
a. Set up the
equipment:
• Disengage both TRACKING mode switches (both switches out) so
that the power supply is in the INDEPendent operating mode.
• Set the MASTER VOLTAGE and CURRENT controls to minimum
(fully counterclockwise).
•
v
Set the digital multimeter to measure a DC current of 4 A.
• Connect the digital multimeter to the + and - terminals of the
Master output.
• Set the MASTER VOLTAGE control to midrange and adjust the
MASTER CURRENT control until a reading of
1
A (PS283) or 2 A
(PS280) is displayed on the multimeter.
NOTE
Do not readjust the
CURRENT
control setting through the remainder
of this procedure.
• Engage both TRACKING switches (both switches in) so that the
power supply is in the PARALLEL operating mode.
• Set the SLAVE CURRENT control to maximum (fully clockwise)
and set the SLAVE VOLTAGE control to midrange.
b. Make the parallel tracking adjustment:
• Adjust VR502 until a reading of 2 A (PS283) or 4 A (PS280) is
displayed on the multimeter.
Disconnect the test setup.
5-6
REV AUG1991
Adjustment
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