BK Precision 575A User Manual

Model 575ADigital IC Tester

MODEL 575A HANDHELD

DIGITAL IC TESTER

OPERATOR’S MANUAL

Model 575ADigital IC Tester

CONTENTS

1. introduction 1

2. DC input 1

3. battery eliminator 2

4. switching on 3

5. operating modes 4

6. entering test numbers 4

7. testing the IC 5

8. test results 6

9. testing further ICs 7

10. continuoustesting 8

11. search mode 8

12. self test mode 9

13. CompactLinkmode 10

14. specifications 11

15. IC support list 12 introduction 12

15.2. series54/74 TTL ICs 12

15.3. CMOS ICs 14

15.4. memory ICs 15

15.5. interface, peripheral, microprocessorand LSI ICs 16

15.6. notes on TTL ICs 18

15.7. notes on CMOS ICs 18

15.8. notes on memory ICs 18

Model 575ADigital IC Tester

15.9. notes on interface ICs 19

16. Service Information 20

17. Limited One-Year Warranty 21

Model 575ADigital IC Tester

1. introduction

Thank you for purchasing the B & K Precision Model 575A Hand Held Digital IC Tester.

The basic function of the B & K Model 575A Digital IC Tester is to test a digital IC for correct logical functioning as described in the truth table and/or function table. The B & K Model 575A applies the necessary signals to the inputs of the IC, monitoring the outputs at each stage and comparing them with the expected states. Any discrepancy results in a FAIL indication and the faulty pins are shown on the integral display. Additional facilities are also provided, amongst them test loops that can be used for goods inwards inspection, detecting intermittent faults or simply providing a rapid method of exercising any IC for demonstration or educational purposes. Since the B & K Model 575A contains an extensive IC library, it is not necessary to program the unit yourself other than to key in the IC number. It isalso capable of identifying an unknown IC using the SEARCH mode - this isa feature that many userswill find extremely valuable.

The B & K Model 575A is provided with an RS-232 interface enabling it to be connected to a companion software package called CompactLink running on a PC. CompactLink allows test programs for ICsnot included in the internal library to be developed and downloaded into the B & K Model 575A memory to enhance the library according to your wishes.

2. DC input

The B & K Model 575A is powered by four AA batteries or by the use of the battery eliminator input at the rearof the case. To insert the batteries, turn the unit upside down and remove the battery

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Model 575ADigital IC Tester

cover by removing the two cross head screws holding it in place. The batteries must be inserted in the correct orientation, as indicated by the drawing within the battery compartment. Incorrect insertion of batteries will not allow the unit to operate. Replace the battery cover and insert the screws. If the battery voltage falls too low, a low battery warning symbol will be displayed at the top left hand cell of the display in normal operating mode. A low battery warning will also be displayed during a result display. Test results may be inconsistent under these conditions.

3. battery eliminator

An external battery eliminator is available for prolonged use of the B & K Model 575A. Many bipolar LSI ICsconsume a large amount of current when powered up, and battery life can be conserved by using the eliminator. There isno need to remove the batteriesprior to inserting the battery eliminator. However, please note that during prolonged periods of non-use batteries are prone to leakage and should be removed. Note that to avoid damage to the unit we strongly advise that you only use the recommended battery eliminator that is available by contacting your distributor. Note that using an incorrect battery eliminator voltage may damage the unit and invalidate the warranty.

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Model 575ADigital IC Tester

4. switching on

To switch the unit on, simply pressthe 'ON' key. To preserve battery life, the unit powers itself off after approximately 3 minutes of nonuse or when “Sw Off” is selected from the main menu. When the unit is switched on, it first performs a self-diagnosistest. Therefore, before switching on, check that the test socket is empty to prevent interference with the diagnostics. If the unit passes the self-test, a pass result will be displayed on the screen. Pressa key to enter the main operating mode - the display will be as follows:

NO:

MODE:Single:RDY

When this initial display is obtained the B & K Model 575A isready for use. If, however, the message SELF-TEST FAIL: is displayed along with a fault message, this indicates that a self-test diagnostic fault has been detected. Any detected faultswill be displayed one at a time. Pressing the TEST/EXEC key will then revert to the opening menu as above, but of course operation of the unit will then be suspect. Before contacting your distributor, check that the test socket iscompletely empty.

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Model 575ADigital IC Tester

5. operating modes

The B & K Model 575A has a number of test modes that are selected using the MODE/CLEAR key from the initial screen. The test modesare asfollows:

Single - execute a single test on the IC in the socket. Loop - execute test repeatedly, regardlessof the result. P Loop - execute test repeatedly, provided the result was PASS. F Loop -execute test repeatedly, provided the result was FAIL. Search - identify the number of the IC in the socket. Diags - execute the diagnostic self-test. CmLink - enter remote mode for CompactLinksoftware. Sw Off - turn off the unit.

6. entering test numbers

Pressthe MODE/CLEAR key until the desired test mode isdisplayed. Enter the number of the IC you wish to test. Pressing the MODE/CLEAR key will clear the last digit from the display if a mistake is made.

Note: The NUMERIC information only is entered, leaving out the manufacturers prefixes and suffixes and IC family information. As an example, all the following TTL ICs should be entered as 7, 4, 0, 0 on the keypad:

e.g. DM74LS00J, N74LS00N, N74S00N, N7400N, 74ALS00N, SN74HCT00

A very small number of ICs have differing pin-outs for different IC families - in these cases, the most popular pin-out only issupported. The CMOS 4000 seriesisalso supported and the IC numbersfor this family should all begin with "4", so that with for example Motorola ICs beginning MC14... the initial "1" should be omitted. The same principles apply also to memory ICs, which are mostly four digit numbers. With interface ICs of the 8T series the "T" should be omitted. A complete list of all ICs supported by the B & K Model 575A is contained in the IC SUPPORT LIST at the end of this

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BK Precision 575A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual