Teledyne 8800A/8800B - Panel / Wall mount trace moisture analyzer - Manual (Page 37)

8800 Series Trace Moisture Analyzer Instruction Manual
30
Legend: + denotes a beeping accompaniment to the message.
/ denotes alternately flashing messages.
DISPLAY EXPLANATION REQUIRED ACTION
LO ERR + PROM check sum failed.
power
on tes
ts
HI ERR + RAM write/read test failed. cycle power
% ERR + Unidentified power-up failure. if problem persists,
C.S.F/ + EEPROM Check Sum Failed. return to your representative
ERR/AD + A/D converter failure.
sy
st
em
te
st
s
on
ce p
er 2
m
in
. for service.
ERR/REF + Reference voltage for A/D out of spec.
LO/BAT + Low supply voltage.
LO RNG/ +
TEMP
Instrument low temperature range
has been exceeded. make sure that the unit is at a
HI RNG/ +
TEMP
Instrument high temperature range
has been exceeded.
temperature of -10°C to +50°C.
OPN/ + Sensor circuit is open.
dewpoint dis
play
te
st
s SAT/ + Sensor is saturated. see table in sensor troubleshooting section 2.5
SHR/ + Sensor circuit is shorted.
... Trying to calculate dewpoint for undefined sensor. select sensor and recalibrate.
DB + Trying to calibrate an undefined sensor.
cal
ib
ra
tio
n
te
st
s see calibration instructions.
SEN/2LO + Sensor reading is ‘too’ low to be from a saturated sensor,
thus can not be calibrated
2LO While Compensating for cable length, the measurement did not
correspond to the expected open or short values.
cabl
e
te
st
s
Check the means of opening & shorting the sensor
cable. see section 3.4.5 - 11
2HI
ERR/EEP + EEPROM write cycle not completed.
m
is
cel
laneous
if this persists, return for service.
LOC + Attempting to modify a locked unit. unlock unit, see set-up state 3.4.5.-10.
SEC + Attempting to unlock a secured unit.
HI (flashing while
viewing DEWPOINT) The HI Alarm (alarm #1) relay is deenergized. See section 3.4.4.2 Setting the Alarms.
LO (flashing while
viewing DEWPOINT) The LO Alarm (alarm #2) relay is deenergized.
A.O./OPN + The Analog Output ‘sees’ an open circuit check the cables connecting the analog output, make
sure the terminating impedance is less that 500 Ω.
PSI flashing when dis-
playing dewpoint Pressure correction is enabled, the dewpoint is computed using
programmed pressures
refer to section 3.4.4.1
-70 °C (-94°F) with
flashing DEWPOINT
An XTR-65 sensor is measuring less than -70°C or -94°F D.P. check instrument
upgrade to XTR-100 sensor
RNG number can not be displayed in 3½ digits
XEN + Turn on message, Xen (Greek Ξ=X)
display is dark No power to instrument check power to instrument, check fuse