COSA Xentaur Xentaur XDT - Manual (Page 37)

XDT User’s 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.
s
y
st
em
tes
ts
once per
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
di
spl
ay
te
sts
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.
ca
libra
ti
on
te
sts
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
sts
Check the means of opening & shorting the sensor
cable. see section 3.4.5 - 11
2HI
ERR/EEP  EEPROM write cycle not completed.
mis
ce
lla
ne
ous
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
units flash and revert
back to original state The user changed the units of measure when the analyzer is locked
the software keeps analog output with original inits
unlock analyzer, change units, lock analyzer
(see section 3.4.4.1)
RNG number can not be displayed in 3½ digits
XEN  Turn on message, Xentaur (Greek Ξ=X)
display is dark No power to instrument check power to instrument, check fuse