3B Scientific Digital Counter with Interface (230 V, 50__60 Hz) User Manual
Page 4

4
Pendulum 
single 
measu-
rement 
When button ‘START/ 
STOP’
is pressed, a
single measurement is 
started 
PERIODES
Continu-
ous 
When button ‘START 
/STOP’
is pressed, the
period time is meas-
ured continuously 
Single 
measu-
rement 
When button ‘START 
/STOP’
is pressed, a
single measurement is 
started 
Pendulum 
continu-
ous 
When button ‘START 
/STOP’
is pressed, a
pendulum’s period time 
is cont. measured. 
Pendulum 
single 
measu-
rement 
When button ‘START 
/STOP’
is pressed, a
single measurement is 
started 
IMPULSE 
COUNT 
Continu-
ous 
When button 
‘START/STOP’
is
pressed, the im-
pulse counting is 
started, and runs 
until ‘START/STOP’ 
is pressed again 
1 s 
6 s 
10 s 
60 s 
When button ‘START 
/STOP’
is pressed,
counting for 1 / 6 / 10 
or 60 s is started 
Count 10 s 
Hold 5 s 
When button 
‘START/STOP’
is
pressed, counting for 
10 s is started fol-
lowed by 5 s pause 
10 s Con-
tinuous 
When button 
‘START/STOP’
is
pressed, sequential 
counting for 10 sec 
is started 
At frequency, period and impulse measure-
ments, only input A is used. 
START A - 
STOP B 
[START] 
When button 
‘START/STOP’
is
pressed, the time from 
A to B is measured 
PASS 
TIME 
[START] 
When button ‘START 
/STOP’
is pressed,
pass times on A and 
B are measured (up 
to 9 measurements 
per channel) 
 
RUN & 
PASS 
TIME 
[START] 
When button ‘START 
/STOP’
is pressed,
the run time from A to 
B, and the pass time 
for A and B are 
measured. 
On each of the above three functions (and the 
pendulum selection in frequency and period), 
the following applies: 
When ‘FUNCTION’ and ‘SELECT’ are pressed 
simultaneously, the start-/stop-polarity triggering 
is shown on the display. 
Pressing ‘SELECT’ shifts through the four (two) 
different combinations possible. 
Press ‘START/STOP’ to store the selection in 
memory for each individual function. The setup 
is memorized, even when the power is off. 
Geiger-Müller amplifi er module
Function
Select
Description
IMPULSE 
COUNT 
GM 
Continu-
ous 
When button 
‘START/STOP’
is
pressed, GM input 
counting is started, 
and runs until 
‘START/STOP’
is
pressed again
1 s 6 
s 10 s 
60 s 
When button 
‘START/STOP’
is
pressed, GM input 
counting for 1 / 6 / 
10 or 60 s is 
started 
Count 10 s 
Hold 5 s 
When button 
‘START/STOP’
is
pressed, GM input 
counting for 10 s is 
started followed by 
5 s pause 
10 s Con-
tinuous 
When button 
‘START/STOP’
is
pressed, sequen-
tial GM input 
counting for 10 sec 
is started 
5.1 Frequency measurement
•
Select frequency measuring with the push-
button ‘FUNCTION’ and hereafter the wan-
ted measuring function with the push-button 
‘SELECT’
.
•
Press the button ‘START/STOP’ to start the 
frequency measurement. 
If the measuring function ‘Single measuring’ or 
‘Pendulum Single‘ (pendulum), has been se-
lected, a new frequency measurement is made 
