HT instruments FULLTEST3 - Manual (Page 15)

FULLTEST 3
EN - 14
6 ..... LIMIT touch-screen key to select limit value (200 mA measurement) or limit mode (25 A
measurement). Currently selected value or CALC is displayed on the bottom of the key. CALC
message means the value is calculated.
7 ..... MODE touch-screen key to select operation mode (MANUAL or TIMER). Currently selected mode
is displayed on the bottom of the key. TIMER mode is available in 200 mA measurement and in 25
A measurement if STANDARD limit mode is selected.
8 ..... CAL touch-screen key to carry out calibration of test leads. Currently calibrated value is displayed
on the bottom of the key. In case of no calibration, the value 0.00  is displayed in red colour.
9 ..... Test lead calibration status (LEADS CALIBATED or LEADS NOT CALIBRATED).
10 ... Measurement value (in green colour - result OK, in red colour - result not OK).
11 ... Real time clock (hh.mm.ss).
12 ... Unit of measurement result (
).
13 ... Set measurement time (in TIMER mode only).
14 ... Measurement result status (symbol
in green colour - result OK, symbol in red colour - result
not OK or symbol in yellow colour – result OK, but measurement current too low).
5.1.2. CALIBRATION OF TEST LEADS
In order test leads not to influence the test results, resistance of the leads must be calibrated (zeroed).
Follow the next steps to calibrate test lead’s resistance:
1) Select test current that will be used for later measurement (200 mA or 25 A) by pressing the
Im NOM touch-screen key (5) first.
2) Press the CAL touch-screen key (8), the message “SHORTCIRCUIT TEST LEADS AND PRESS
START TO CALIBRATE” will appear.
3) Connect test leads according to the figure below, make sure two crocodiles are connected as close
as possible to each other to a piece of unisolated wire.
Short unisolated wire
Red test leads 2,5 mm 2
Figure 6 : Connection of test leads for calibration purpose
4) Press the START button. The measurement will be done and value without calibration will be
displayed for a moment, then the value will be set to zero (0.00). Test leads are thus calibrated,
measurements can follow.
CAUTION
 The calibration must be done separately for each test current (200 mA and 25
A)!
 The calibration must be repeated when test leads are changed (replaced,
shortened or extended)!
 Max resistance that can be calibrated is 5  !
 Existing calibration can be annulled if test leads are opened when calibration
is carried out!
 Calibration is not needed in R
PE-4WIRE function!