03/ 2011
BENNING MM 11
19
Button-
: Deletion of the internal measuring value memory (see
also Chapter 5.2)
Button-
: Deactivates/ activates the fitted buzzer.
5.1.7
The button (yellow)
switches on the display illumination. Shutdown is
effected by a renewed press of the button or automatically after 15 mins.
5.1.8
The button
centres the zero point of the analogue bar graph
display in the centre of the display (function: DC voltage/ current). In
the DATA LOG function, the bar graph centring function is not available.
Switch-over by briefly pressing a key. By pressing the
key
6
longer (2 seconds), the displayed value can be switched over from
20,000 digits to 4,000 digits. This can be reset by pressing the key
again (2 seconds) or by switching off the BENNING MM 11. This mode
is not available for the following ranges:
7.5/ 7.6 Resistance measurement 200 MΩ and 2 GΩ
7.7 Diode and continuity testing
7.8 Capacity measurement
7.9/ 7.10 Frequency and pulse duty ratio measurement
7.11/ 7.12 Temperature measurement
A switch-over to the lower displaying value might be necessary, if for
V AC and A (mA) AC measurements the frequency shall be displayed
simultaneously in the lower display
2
. For this, the measured value (V;
A; mA) must be at least 30 % of the displayable range.
5.1.9
The button
(peak value storage) inputs and stores the “Peak
Max-/ Peak Min” value (function: mV, V, mA, and A) with a simultane-
ous indication of “PH” in the display. Each new save of the “Peak Max-/
Peak Min” value is confirmed by an acoustic signal. The “Peak Max-/
Peak Min” value is retrieved by pressing the button
and indi-
cated in the subdisplay
. A renewed operation of
-Button
switches back into a standard mode.
5.1.10
The function
(measured value store) stores stable display
values in the subdisplay
. In the display
the symbol “AH” is shown
simultaneously. As soon as a measured value is input, the subdisplay
is updated with the new value. Unstable measured values or noisy
signals cannot be stored via the
-function. A renewed press of the
button switches back into measuring mode. In the following measuring
functions, the device switches over from the automatic to the manual
measuring range to store the measured values (
). Resistance
measurement, capacity measurement and frequency measurement.
5.1.11 The button (blue)
selects the secondary or tertiary functions of the
rotary switch setting:
Rotary switch setting:
Secondary function:
Tertiary function:
V AC, mV AC
V DC, mV DC
V AC + DC, mV AC + DC
Ω
(Messspannung: 3,3 V)
LV
Ω
(
reduced
measuring voltage
: 0,6 V)
Diode
acoustic continuity testing
mA AC, A AC
mA DC, A DC
mA AC + DC, A AC + DC
Capacitor
Hz
% DF (Duty Factor),
pulse duty ratio
°C
°F
Note:
- The function LV
Ω
(resistance measurement) reduces the measuring
voltage to 0.6 V, so that semiconductor elements operated in conduc-
tion direction such as diodes or transistors do not open.
-
Function %DF (Duty Factor) describes the pulse duty ratio of periodic signals:
DF [%] =
T1
T
