Tracker-2800-2800S.pdf - 第5页

5 Section 1 Introdu ction 1-1 What is a Tracker 2800? A Huntron Tracker 2800 is a troubleshooting instrume nt that is used manuall y to troubleshoot printed circuit boards to the component leve l. Throughout this ma nual…

VALUES CONTROLS ............................................................................................................................................ 29

SCAN – MODE CONTROLS .................................................................................................................................. 30

SCAN – TOL (TOLERANCE) CONTROLS ............................................................................................................... 30

SCAN – PACKAGE CONTROLS (TRACKER 2800S) ............................................................................................. 31

CONTROL – SWITCH CONTROLS ...................................................................................................................... 32

CONTROL – DIAGS CONTROLS ......................................................................................................................... 33

CONTROL – 2000 MODE ..................................................................................................................................... 35

SECTION 3 TESTING PASSIVE COMPONENTS .................................................................................... 36

3-1. RESISTORS .............................................................................................................................................. 36

3-2. CAPACITORS .......................................................................................................................................... 41

3-3. INDUCTORS ............................................................................................................................................ 48

3-4. ELECTROMECHANICAL SWITCHING COMPONENTS ............................................................... 53

SECTION 4 TESTING DISCRETE SEMICONDUCTORS ....................................................................... 56

4-1. DIODES ..................................................................................................................................................... 56

4-2. TRANSISTORS ........................................................................................................................................ 65

4-3. SOLID STATE SWITCHING COMPONENTS .................................................................................... 71

SECTION 5 TESTING INTEGRATED CIRCUITS .................................................................................... 74

5-1. DIGITAL INTEGRATED CIRCUITS ................................................................................................... 74

5-2. ANALOG CIRCUITS ............................................................................................................................... 81

5-3. LOW VOLTAGE ...................................................................................................................................... 85

Section 1 Introduction

1-1 What is a Tracker 2800?

A Huntron Tracker 2800 is a troubleshooting instrument that is used manually to troubleshoot printed

circuit boards to the component level. Throughout this manual it will be referred to as the Tracker 2800

or 2800S (where applicable). This instrument uses a troubleshooting technique called Analog

Signature Analysis (ASA) for applying a current limited sine-wave voltage to an un-powered circuit or

electronic component. The resulting Current (I) and Voltage (V) characteristic (analog Signature) is

then displayed and used for comparing known good signatures of a good circuit card or electronic

component to those of a suspect circuit board. This comparison allows you to troubleshoot circuit cards

and electronic components without applying external power or requiring circuit cards to “start up”.

Each pin of a component can have a unique signature. When components fail, their signatures change

so troubleshooting using ASA is simply a matter of finding the defective component by analyzing its

signature. The Tracker 2800 implements the ASA technique of troubleshooting.

The built-in current limited stimulus sine-wave of the Tracker 2800 ensures non-destructive testing and

does not damage any components. ASA has many advantages as a proven, fast, and effective

troubleshooting technique.

You can:

Troubleshoot circuitry that cannot be powered up due to a shorted condition.

Troubleshoot in a qualitative mode, allowing you to see physical problems with a suspect component.

Compare device characteristics with known types for better matching.

Investigate intermittent problems by seeing marginal indicators, such as small amounts of leakage,

noise, etc.

Eliminate risk of accidental shorting across other points during POWER ON testing which could

further damage the component or other components on the board.

Minimize the risk of shock hazard since the ASA troubleshooting approach requires no power applied

to the circuitry.

Perform preventative maintenance by seeing flaws in components that could possibly lead to untimely

failures.

Look at replacement components before they are installed in circuitry to reduce the risk of installing

defective ones.

ASA may be universally applied to any type of passive component like a resistor, capacitor, or

inductor, or a solid state semiconductor component like a diode, transistor, SCR, digital, analog, or

mixed-signal IC. When troubleshooting a circuit card, the resultant signature is a composite of various

component signatures at a particular node in the circuitry. By understanding what different signatures

mean, you can determine which components are faulty.

You can manually connect the Tracker 2800 front panel test terminals directly to the circuit card or

component that you are testing. You can automate the test process to a certain degree by connecting to

boards under test via custom cabling or IC clip cables using a Tracker 2800S. The Tracker 2800S is a

modified version of the Tracker 2800 that has internal switch cards and external, front panel IDC

connectors to which custom cable interfaces or DIP clip cables can be connected.

1-2 Specifications

Electrical (Note: Test Signal is a sine wave.) Specifications subject to change without

notice

Open Circuit Voltage (Vs):

selections of peak voltage:

200mV,

3V, 5V, 10V, 15V, 20V

Source Resistance (Rs):

selections of resistance:

10Ω, 50Ω, 100Ω, 500Ω, 1kΩ, 5kΩ, 10kΩ,

50kΩ, 100kΩ

Short circuit current (Vs divided by Rs)

Maximum

200 mApk

Frequency (fs):

selections of frequency:

20Hz

, 50Hz, 60Hz,

200Hz, 500Hz, 2kHz

Channels

Number

Connections

Banana (Channel A, Common, Channel B);

Two (Ch. A and Ch. B) 40 pin IDC connectors (Tracker

2800S only)

Overvoltage Protection

Circuit breaker

Auxiliary Connection

9 pin mini jack with ground, Trigger IN, Trigger OUT,

Calibration TP, Sine wave zero-crossing, Signal ON, Line

IN and Line OUT

DC Voltage Source

10VDC + output @ 200mA max;

PC Interface

USB 2.0

GENERAL

Power Requirements

100/115V~ 0.2A 50/60Hz, 230V~ 0.1A 50Hz

Fuse

T400mA 5x20mm 250V

Operating Temperature

59 degrees F to 86 degrees F

(+15 degrees C to +30 degrees C)

Storage Temperature

58 degrees F to 140 degrees F