Tektronix 2465 User Manual

Appendix A-2465 Operators
POWER-UP TESTS
Power-up tests are divided into two main parts: Kernel
tests and Confidence tests.
KERNEL TESTS
The Kernel tests confirm proper operation of the
memory associated with the basic instrument's micro-
processor (RAM and ROM) and of any instrument options
that are present. A failure of
a Kernel test is indicated by
a flashing TRIG'D indicator on the instrument front panel.
Even with a Kernel failure, the instrument may still be
put into the operating mode by pressing in the A/B TRlG
button. However,
its operation will be unpredictable.
CONFIDENCE TESTS
The Confidence tests are performed after successful
completion of all Kernel tests. Confidence testing for any
options present in the instrument will automatically be
included. A failure of any Confidence
test at power on is
indicated in the bottom line of the crt readout. The failure
display has the following format:
TEST XX FAIL YY
where XX is the two-digit hexadecimal test number and YY
represents the failure code for the failed test.
Brief descriptions of the tests are listed in Table A-I. A
Confidence test failure may not render the instrument
inoperable. The instrument may still be placed into the
operating mode by pressing in the
A/B TRlG button;
however,
it may not meet all specifications.
Table
A-I
Confidence Test Numbers and Descriptions
Test Number
Description
IRQ-Checks that interrupts are occurring
and that correct time interval exists
between interrupt occurrences.
SWITCH STUCK-Checks for momentary
switches that may be stuck closed.
READOUT BOARD-Checks interfaces
with the Readout circuit board and the
readout RAM.
EAROM-Checks the
EAROM interface
and verifies the calibration constants stored
in the EAROM.
MAIN BOARD-Partially checks the Main
circuit board by operating the Auto Level
function on the Line Trigger source.

Tektronix 2465 Specifications

General

Bandwidth	300 MHz
Channels	4
Vertical Sensitivity	2 mV/div to 5 V/div
Maximum Input Voltage	400 V (DC + Peak AC)
Display Type	CRT
Trigger Modes	Auto, Normal, Single Sequence
Input Impedance	1 MΩ
Power Requirements	48-440 Hz

Summary

Operators Safety Summary

Safety Terms and Definitions

Defines manual terms, equipment markings, and warning symbols.

Grounding and Power Cord Safety

Ensures safe operation through proper grounding and power cord usage.

Specification

Introduction and Performance Conditions

Overview of features, electrical, and environmental specifications.

Preparation for Use

Safety, Voltage, and Fuse Procedures

Covers safety, voltage selection, and line fuse information.

Power Cord and Instrument Cooling

Details on power cord connection and ensuring proper instrument cooling.

Start-Up and Repackaging

Describes power-up tests and how to repackage the instrument.

Controls, Connectors, and Indicators

Power and Display Controls

Location and function of controls related to power and screen display.

Vertical Controls and Connectors

Description of vertical input connectors, coupling switches, and deflection controls.

Horizontal and Delta Measurement Controls

Controls for sweep speed, delay, and measurement functions.

Trigger Controls and Indicators

Controls and indicators for setting up trigger modes, source, coupling, and slope.

Rear Panel and Readout Display

Identification of rear panel connectors and the alphanumeric readout display.

Operating Considerations

Graticule and Measurement Techniques

Using graticule, cursors, and delayed sweep for measurements.

Grounding and Signal Connections

Proper grounding and connecting signals via probes or cables.

Input Coupling and External Triggering

Function of input coupling and using external trigger sources.

Operator's Checks and Adjustments

Introduction and Initial Setup

Procedures for verifying operation and setting up a baseline trace.

Key Adjustments and Checks

Covers trace rotation, astigmatism, DC balance, and probe compensation.

Amplitude and Timing Checks

Verifying signal amplitude and timing accuracy using calibration signals.

Basic Applications

Voltage and Ratio Measurements

Using the Delta Volts function for voltage and ratio measurements.

Time and Frequency Measurements

Measuring time intervals, frequency, and differences using Delta Time.

Phase Difference and Delayed Sweep

Measuring phase difference and using delayed sweep for waveform analysis.

Options and Accessories

Instrument Options and Power Cords

Details on options like Option 11, 1R, and various power cord configurations.

Power-Up Tests

Kernel and Confidence Test Descriptions

Explanation of power-up tests verifying instrument and option functionality.

Manual Change Information