[Techtoolslist] HP 10529A

[Filip Hautekeete]

Hello Jose,

Thanks for getting back to me. I think the dip switches need to be away from the chip when they are used as output pin. Would you happen to know what the bigger comp/clip switch is for ? I think comp stands for "comparator mode" and "clip" displays the outputs from the clipped chip but I am not sure.

I think my unit is broken though. Any chips I have tried it with had the output LED's just flash irregularly. I am not sure if the test procedure should give the results as I have described before ? I am sure the clip is aligned properly (the ON LED signals +5V Vcc) but other than that the unit gives random results. I have no clue why...

One of the IC's I have been testing with is a 74LS283 (4bit binary full add with fast carry). The clip is aligned with pin 1, the IC in the textool is aligned with pin 1, the output dip switches are set and still the LED's are flashing while I am expecting all of them to remain unlit.

Best regards,

Filip
  ----- Original Message ----- 
  From: Jose Luiz Martins 
  To: 'Technical Tools Mail List' 
  Sent: Tuesday, June 20, 2006 5:58 PM
  Subject: RES: [Techtoolslist] HP 10529A


  Hi Filip,

  The HP 10529A is quite easy to use. You have to put a known good IC on on the card that has two micro switch banks (forgot it's part number). The switches are used to "say" to 10529A what pin are input and what is output. So, check on IC's datasheet the input pins, and move the correspondign switch pin close to IC for input and move the switch far from IC for output pins. You are now ready to test.

  The +5 and gnd will be supplied by test clip on the IC under test.

  If the IC under test is Okay, nothing happens, just the +5V will light. If something wrong, the corresponding led will flash, indicating some missing signal on that pin.

  Pay attention that the 10529A is not 100% correct, it's a very good tool for obvious problems. For counters and flip-flops troubleshooting, you must to power on the board with test clip attached or reset the board first, otherwise you will have different data inside the ICs.

  Sorry for my english.


  José Luiz Martins



------------------------------------------------------------------------------
  De: techtoolslist-bounces at flippers.com [mailto:techtoolslist-bounces at flippers.com] Em nome de Filip Hautekeete
  Enviada em: terça-feira, 20 de junho de 2006 12:40
  Para: Technical Tools Mail List
  Assunto: Re: [Techtoolslist] HP 10529A


  Anyone who has ever used one of these ? I think the dipswitches are related to the pins which are logic outputs but even when playing around with those switches I am still getting unsatisfactory results :-( 

  Any comments would be welcome...
    ----- Original Message ----- 
    From: Filip Hautekeete 
    To: Technical Tools Mail List 
    Sent: Monday, June 19, 2006 6:04 PM
    Subject: [Techtoolslist] HP 10529A


    Hello all,

    I recently got ahold of an HP 10529A logic comparator but I am not sure how to use it.

    The unit came with a self test card and a card with textool socket 10529-60014.

    When I insert the test card and supply 5V to the card connectors the logic comparator LEDS blink shortly with a 2 second interval or something. If I also connect the logic clip on top of the "dummy" IC I get a long blink (approx 1 sec) and then still the short blink. I don't know if this qualifies as "normal" behaviour.

    To test the 10529A comparator I tested with a Wonderboy PCB. I insert the appropriate 74LS chip in the textool socket (pin 1 aligned to the "1" mark (near the SW error led)) but no matter how I fiddle around with the dip switches or COMP/CLIP switch I always get red comparator LED's to remain turned on (I expected either all of them to light up or remain off). I have tried with different 74LS chips on different locations but I can't get any decent result out of this.

    Can anybody tell me how to use this 10529-60014 thing (no manual here) or tell me what I am doing wrong ? A short description of what the dip switches and comp/clip switch are for would be welcome...

    Best regards,

    Filip



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