HT instruments SIRIUS87 - Manual (Page 13)

SIRIUS 87
EN - 11
CABLES USED FOR THE TEST
Before each measurement always make sure that
the calibration is referred to the cables in use.
During a continuity test, if the resistance value free
of calibration (that is the resistance value less the
calibration offset value) is
negative, the symbols

as well as blinking CAL
are displayed
(according to 5
th
screen § 4.1.3). Probably the
calibration stored in the instrument memory is
referred to cables other than those in use,
therefore a new calibration is to be effected.
CAUTION
The display of
“Measuring” means that the instrument is measuring. During
this phase never disconnect test leads.
4.1.1.1. Procedure to cancel calibration parameters and cal symbol
To cancel calibration parameters (and the
symbol CAL) it is necessary to effect a
calibration procedure with a resistance of
test leads higher than 5
 (for example
with disconnected test leads). When a
cancellation is effected
the screen nearby
is displayed first , followed by the screen
below:
LOW
 
> 5

cal
Measuring
The screen nearby is displayed for 2
seconds, after which the instrument emits a
long sound signal and then displays the
default screen relative to the LOW
 test
under AUTO mode without the symbol CAL.
LOW
 
es
cal
Message >5 :
means that the
instrument
detected a
resistance higher
than 5

therefore it will
proceed with
Reset procedure.
Message rES:
means that the
instrument
effected
cancellation
(RESET) of the
calibration
parameters