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.
Josˇ
Luiz Martins
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 -----
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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