Qmax , Manufacturers of PCB Testers, in-circuit functional test systems, production testers, ATE, Short locators

PCB manufacturing defect analyser ( analyzer) - Testing RF Tuner - QT150 PCB manufacturing defect analyser ( analyzer) - Testing RF Tuner - QT150

QT150 - Applications
Testing RF Tuners

Objective

To demonstrate the capabilities of QT150 and the QSM Technique, tailored for the Production Board Recovery and Quality Assurance test

Test setup

Ch #0 to Ch #7 of the QT150 Card #0 is connected to the 8 Test Points brought out from the Tuner. In order to accomplish it, it is enough if we have just one Mux card - ie with only 64 Channels. More advanced method of interfacing can be accommodated with the Bed of Nails and the solenoids to actuate the UUT (Unit Under Test) Test Fixture.

Learning

The test software provides features to learn all the 8 test points with different voltage and different frequency settings with the QSM through the fixture setup.

Report

The user can choose to print out the results at the end of the test automatically. This feature enable even the junior level operator to use QT150.
The typical Error Log looks like this

Tested Board ID : B0 Master Board : THOMAS Test began at 13:30:13 - 10/01/96 and ends at 13:31:59 - 10/01/96

Board B0 Fails

Device TEST1 Fails ADDITIONAL LINKS FOUND :- Pin 1 shorted to : 7, 8 Pin 7 shorted to : 8 Pin 8 shorted to : 9 ----------------------------------------- Pin No Failure % Failure % HiZ Pins Missing Links Additional Links Occurance Deviation with Pins with Pins ----------------------------------------- 7 87.5% 96% - (8) ---- ---- Yes 1 25.0% 94% - (7) ---- ---- Yes 4 25.0% 48% - (7) 2 25.0% 35% - (7) 3 25.0% 39% - (7) 6 25.0% 26% - (7) 9 25.0% 94% - (7) ----------------------------------------- LIST OF DEVIATIONS THAT OCCURED >= 0.0%

TEST1-1 - TEST1-7 short fails! 94 % TEST1-1 - TEST1-8 short fails! 61 % TEST1-2 - TEST1-7 Trace fails! 35 % TEST1-2 - TEST1-8 Trace fails! 27 % TEST1-3 - TEST1-7 Trace fails! 39 % TEST1-3 - TEST1-8 Trace fails! 31 % TEST1-4 - TEST1-7 Trace fails! 48 % TEST1-4 - TEST1-8 Trace fails! 33 % TEST1-6 - TEST1-7 Trace fails! 26 % TEST1-6 - TEST1-8 Trace fails! 13 % TEST1-7 - TEST1-8 short fails! 96 % TEST1-7 - TEST1-9 Trace fails! 94 % TEST1-8 - TEST1-9 short fails! 61 %

-------- End Of Board Result --------

What is shown on the ERROR LOG / REPORT?

Open and short circuits are given higher priority Occurance failures are the number of failures to the total number of traces for the particular pin.
Deviation failures are the failures beyond the deviation set forth by the user for every pin - and this is not in sorted order.

What does it indicate?

A higher percentage of failure in the occurance failure for only a specific pin indicates that it is the failure inside the IC.

A higher percentage of failure for a specific combination of pins in the occurance shows that the inputs to the IC are bad.

Back