Справочник Пользователя для Beha Amprobe Beha Echometer 3000 Cable Lenth Measuring Device 2146202

6.3 Trouble-Shooting
The UNITEST Echometer 3000 enables to locate
faults in cables or conductors. 

The user must check that the circuits are not
live !

" Switch on the UNITEST Echometer  3000 press-

ing the 

key.

" Change to the reference range pressing the

key, e.g. Reference level I. REF I is in-

dicated on the display.

" Connect the red test lead to the red socket and

the black test lead to the black socket of the m
range.

" Connect the faulty leads of the conductor to be

measured using the alligator clamps.

" Set the measurement unit (m/ft) pressing the

key. ''m'' or ''ft'' is displayed. 

" Set the measurement range selection dial in ac-

cordance with the conductor types in Tables I or
II. The

key is used to change to the

measurement ranges of Table II. ''TAB II'' is in-
dicated on the display.

If the message ''- - -'' is displayed, the UNITEST
Echometer is ready to perform measurements.

" Start the measurement pressing the

key.

A single signal sound is audible and the mea-
surement value of the conductor length in the
pre-selected unit (m/ft) up to the error location
is displayed. If the message "COMP is dis-
played, the leads have a short-circuit.

Short-circuited cable ends cause an increasing
measurement error of the UNITEST Echometer
3000.

6.4 Performance of Resistance Measurements
The UNITEST Echometer 3000 can easily and pre-
cisely determine electrical resistances. 

The user must check that the circuits are not
live !

" Switch on the UNITEST Echometer  3000 press-

ing the

key.

" Set the measurement range selection to the po-

sition "Ohm”.

" The message ''>1999,9 Ohm'' is displayed. 
" Connect the red test lead to the red socket and

the black test lead to the black socket of the Ohm
range.

" Connect both ends of the resistance to be mea-

sured using the alligator clamps.

The resistance measured is indicated on the display.
If the resistance is below approx. 10 Ohm an
acoustic signal is audible. 

Start/Off

Start/Off

Start/Off

Ω

Ω

Ω

Ω