Thermo EPD Mk2, Technical Handbook

Page: 84 / 115

EPD/HB/40521/000
ISSUE 5
EPD TECHNICAL HANDBOOK Page 74
Counts Module
Code Text as displayed by
EasyEPD2 EPD Action Recommended
Customer
Action Remarks
081 Unexpected Texas chip
reset (Battery Low but no
Batt Low Status) Reset unit.
Return to
supplier if
recurs. No Longer Used
082 Consecutive Drop (more
than 45 seconds) No Longer Used
083 Counts not latched yet
no drop occurred Reset into
comms
mode only —
counts
processing
disabled. Return to
supplier ASIC or interface to ASIC
may be faulty.
The only reason to not-latch
the counts would be that a
knock has occurred.
084 Counts Processing time
inconsistent Reset Reset unit.
Return to
supplier if
recurs. Unlikely to occur unless
clock overflows. This is not
possible unless clock is
written with new value or
incremented at wrong rate.
085 Count too large (HG or
SG > 300,000) or (FB or
BC > 26,000) Reset - Ditto - This fault can occur by
inputting a very large number
of counts ( only
possible under test
conditions or severe
interference).
086 Detector threshold load
failed Reset into
comms
mode only —
counts
processing
disabled. Reset unit.
Return to
supplier if
recurs. Texas chip or associated
circuits may be faulty.
087 A calibration value is out
of range Counts
processing
disabled Return to
supplier Display will indicate dashes,
but error code can be
extracted from error log.
An error status bit is also
set.
This fault will be picked up
on power-up, writing cal.
factors or thresholds, or
switching from OFF to ON
mode.
088 Abuse alarm (more than
45 consecutive seconds
of knocks) None-
continues
normal
processing Clear with
EasyEPD.
Return to
supplier if
recurs when
unit not
knocked. Check knock detector