TM 5-6675-323-14
Table 3-26. HP-IB ERROR DISPLAYS AND POSSIBLE CAUSES - Cont
P o s s i b l e Causes
Display or Printout
PARALLEL POLL FAILURE
(1) Failure of parallel poll logic on
" IUT DID NOT CONDUCT PARALLEL
PCA A1.
POLL CORRECTLY . NO "SRQ" WAS
PRESENT AND POLL RETURNED
"
(2) Parallel poll logic switch is set
incorrectly.
(3) F a i l u r e o f p a r a l l e l p o l l l o g i c , o u t -
put data latch, or control bus latch
on PCA A2.
(1) Parallel poll switch is misset.
" IUT DID NOT CONDUCT PARALLEL
POLL CORRECTLY.
"SRQ" WAS
PRESENT; POLL RETURNED _,
(2) Failure of parallel poll logic on
PCA A1 and A2.
SHOULD HAVE BEEN 2"
( 3 ) F a i l u r e of ROM U1.
Failure or wrong setting of parallel
"IUT DID NOT RESPOND CORRECTLY
poll switch.
TO PARALLEL POLL. RESPONSE WAS
, SHOULD HAVE BEEN 1.
CHECK PARALLEL POLL SWITCH
SETTING--SHOULD BE 1"
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