Tektronix TDS 420A Service Manual

Adjustment Procedures
5-10
TDS 420A, TDS 430A & TDS 460A Service Manual
Probe Adjustment
Probe adjustment is divided into three parts: Compensate the Probe, Measure the
Probe Bandwidth,andAdjust the Probe High-Frequency Response. If probe
bandwidth is within required limits, do not do the high frequency response
adjustment.
Equipment
Required
The P6138A probe (Item 12)
The probe adjustment tool included as a probe accessory
1. Install the test hookup and preset the oscilloscope controls:
Digitizing Oscilloscope
Figure 5- 1: Hookup for Probe Compensation
a. Hook up test-signal source: Install the standard-accessory probe to
CH 1. Connect the probe tip to PROBE ADJ on the front panel; leave
the probe ground unconnected.
b. Initialize the oscilloscope:
H Press save/recall SETUP.
H Press the main-menu button Recall Factory Setup.
H Press the side-menu button OK Confirm Factory Init.
c. Modify the initialized front-panel control settings:
H Press AUTOSET. Set the horizontal SCALE to 200 s.
H Press SET LEVEL TO 50%.
Compensate the Probe

Tektronix TDS 420A Specifications

General

Brand	Tektronix
Model	TDS 420A
Category	Test Equipment
Language	English