Tektronix PS280 Service & Reference Guide

Adjustment Procedures
b. Make the current adjustments:
• Adjust VR303 for a reading of 1.05 A (PS283) or 2.1 A (PS280) on
the multimeter.
• Adjust VR602 until the Laboratory DC Power Supply meter dis-
plays 1.05 A (PS283) or 2.1 A (PS280).
Disconnect the test setup.
Series Tracking
Mode
Equipment Required: Digital multimeter
See Figures 5-1 and 5-3 on pages 5-8 and 5-9 for adjustment locations used
in this procedure.
1. Adjust the series tracking Mode:
a. Set up the equipment:
• Engage the left TRACKING mode switch (switch in) and disen-
gage the right TRACKING mode switch (switch out) so that the
power supply is in the SERIES operating mode.
• Set the SLAVE CURRENT control to midrange.
• Set the MASTER VOLTAGE control to minimum (fully
counterclockwise).
«. • Set the digital multimeter to measure a DC voltage of ±16 mV.
• Connect the digital multimeter to the + and - terminals of the
Master output and note the reading obtained.
• Connect the digital multimeter to the + and - terminals of the
Slave output.
b. Make the zero voltage tracking adjustment:
• Adjust VR306 until the voltage output of the SLAVE output matches
the reading obtained from the MASTER output.
c. Set up the equipment:
• Set the MASTER VOLTAGE control to maximum (fully clockwise).
• Set the digital multimeter to measure a DC voltage of ± 35 V.
• Connect the digital multimeter to the + and - terminals of the
Master output and note the reading obtained.
• Connect the digital multimeter to the + and - terminals of the
Slave output.
PS280 & PS283 Laboratory DC Power Supply Module-Level Service Manual
REV AUG 1991

Tektronix PS280 Specifications

General

Brand	Tektronix
Model	PS280
Category	Power Supply
Language	English