B&K Precision 570A User Manual

Model 570ALinear IC Tester

MODEL 570A HANDHELD

LINEAR IC TESTER

OPERATOR’S MANUAL

Model 570ALinear IC Tester

CONTENTS

1. introduction ..............................................................................2

2. DC input................................................................................... 2

3. battery eliminator..................................................................... 3

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......................................................................8

10. continuoustesting .................................................................8

11. search mode.......................................................................... 9

12. self test mode...................................................................... 10

13. CompactLinkmode .............................................................10

14. specifications....................................................................... 11

15. IC support list....................................................................... 12

introduction................................................................................ 12

15.2. operational amplifiers...................................................12

15.3. comparators..................................................................15

15.4. switches and multiplexers.............................................16

15.5. regulators, referencesand virtual grounds.....................16

15.6. opto couplersand isolators........................................... 17

15.7. miscellaneous...............................................................18

16. Service Information.............................................................19

17. Limited One-Year Warranty................................................. 20

Model 570ALinear IC Tester

1. introduction

Thank you for purchasing the B & K Precision Model 570A Hand Held Linear IC Tester.

The basic function of the B & K Model 570A Linear IC Tester isto test a linear IC for correct logical functioning as described in the manufacturer’s IC data sheets. The B & K Model 570A applies the necessary analogue signals to the inputs of the IC, monitoring the outputsat each stage and comparing them with the expected voltages. 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 570A contains an extensive IC library, it is not necessary to program the unit yourself other than to key in the IC number. It is also capable of identifying an unknown IC using the SEARCH mode - this isa feature that many userswill find extremely valuable.

The B & K Model 570A 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 570A memory to enhance the library according to your wishes.

2. DC input

The B & K Model 570A is powered by four AA batteries or by the use of the battery eliminator input at the rear of the case. To insert the batteries, turn the unit upside down and remove the battery

Model 570ALinear 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 570A. Some ICs consume a significant 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.

4. switching on

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

NO:

MODE:Single :RDY

Model 570ALinear IC Tester

When this initial display is obtained the B & K Model 570A 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.

5. operating modes

The B & K Model 570A 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 linear ICs should be entered as 7, 4, 1 on the keypad:

e.g. uA741CP, uA741M, uA741C etc

Model 570ALinear IC Tester

Some ICs are available in different pin outs or package types, and also there may be several different types of IC with the same numerical part number. In these cases the B & K Model 570A will automatically determine which test to perform. If howeverthe IC is faulty the unit may not be able to determine the correct IC type - if this happens a warning message will be displayed. A complete list of all ICs supported by the B & K Model 570A iscontained in the IC SUPPORT LIST at the end of this manual together with notes on any special requirementsfor certain ICs.

Note that if you have stored a user library using CompactLink, an IC in the user library with the same number as one in the internal library will take precedence. Thisallowsa new test to be written for an existing IC. If you wish both teststo be available, use a different number for your user test.

7. testing the IC

The test socket is a 24 pin shell with 16 active pins. Insert the IC to be tested in the front of the 24 pin Zero Insertion Force socket with pin 1 towards the display asshown below:

For 3 pin TO220 or TO92 packages, insert the IC in pins6, 7 and 8 (lower left) of the socket with the metal tab or flat side facing to the right.

Ensure that the operating lever on the socket isin the open (i.e. up) position before inserting the IC. Close the socket by lowering the lever, making sure that the IC is firmly seated in the socket and

+ 15 hidden pages

B&K Precision 570A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual