Cosa-xentaur Xentaur XPDM Manuel d'utilisateur télécharger pdf (Page 19)

page 16

9. Special messages, warnings and error indications

Legend: denotes a beeping accompaniment to the message.

denotes alternately flashing messages

DISPLAY EXPLANATION REQUIRED ACTION

PROM check sum failed.

power on tests

RAM write/read test failed. cycle power / replace battery,

Unidentified power-up failure. if problem persists,

EEPROM

heck

ailed. return to your representative

A/D

converter failure.

system tests once per 2 min.

for service.

Ref

erence voltage for A/D out of spec.

bat

tery voltage. replace battery.

TEMP

Instrument

temp

erature

rang

has been exceeded. make sure that the unit is at a

TEMP

Instrument

temp

erature

rang

has been exceeded.

temperature of -10°C to +50°C.

Sensor circuit is

open

dewpoint displays tests

check sensor. wetup sensor to see if it will

react

Sensor is

sat

urated. dry down the sensor.

Sensor circuit is

shor

ted. check sensor.

Trying to calculate dewpoint for undefined sensor. select sensor and autocal.

Viewing dewpoint while sensor is in desiccant

dry

storage.

a reminder that the dewpoint in the desic-

cant is being measured.

Trying to calibrate an undefined sensor.

autocal tests

Prompting to

pul

out

the sensor from desiccant to

perform autocal.

see autocal instructions.

Sen

sor reading is ‘

too’ lo

w to be from a saturated

sensor, for autocal.

EEP

ROM write cycle not completed.

miscellaneous

if this persists, return for service.

Attempting to modify a

loc

ked unit. unlock unit, see set-up mode.

Sensor is neither

nor

out

of desiccant. pull out or push in the sensor actuator

Turn on message,

Xen

taur (

Greek

=X)

Turn off message, good-

bye

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Cosa-xentaur Xentaur XPDM Manuel d'utilisateur Page 19

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