08/ 2008
BENNING MM 1
9
2. Safety instructions
Below is an example of a safety instruction:
Dangerous voltage!
Follow the safety instruction!
Before using the BENNING MM 1, please read the operating manual carefully.
Follow the safety instructions in this manual. In this way you will ensure safe
operation and will retain the BENNING MM 1 in safe condition.
3. Contents of delivery
The following items are included in the delivery of a BENNING MM 1:
3.1 one BENNING MM 1
3.2 one safety test lead, red (L= 1.4 m ; Probe diam. = 4 mm) with protec-
tive cap
3.3 one safety test lead, black (L= 1.4 m; Probe diam. = 4 mm) with protec-
tive cap
3.4 one protective rubber holster
3.5 one compact protective carrying case
3.6 two 1.5 V micro batteries (built into unit)
3.7 one operating manual
Note on replaceable parts:
The BENNING MM 1 is powered by two 1.5 V micro batteries (2x1.5-V-IEC LR03).
4. Tester description
refer to figure 1:
front tester panel
The display and operating elements shown in figure 1 are denoted as follows:
Digital display
for measurement values, display for bar graph, display for
overrange indication,
Polarity display
,
Battery indicator
, appears when the battery is low,
Rotary switch
for function selection
Input terminal
(positive
1
) for V,
, µA,
,
COM-Terminal
, common return terminal for voltage and resistance
measure ments, continuity and diode tests,
RANGE button,
HOLD button
,
Protective rubber holster
1
) the automatic polarity display for direct and alternating current refers to this terminal
5. General Specifications
5.1 General specifications for the BENNING MM 1
5.1.1 The digital display is a 3½ digit liquid crystal display with 10,5 mm digit
height and automatic decimal point placement. The highest display
value is 3200.
5.1.2 The polarity display
is automatic. As positive is implied by the
defined input terminal, only a negative pole will be indicated with "-".
5.1.3 Overranging is indicated by a blinking "1" or "-1" and the buzzer
sounds.
5.1.4 The range selection button "RANGE"
allows the user to change the
range manually and causes the "RANGE" annunciator to appear on
the LCD display. Hold the switch for 2 seconds to return to the auto-
matic ranging function ("RANGE" annunciator disappears from the
display). In the rotary switch position
, it is possible to change
between the functions continuity test and diode test by means of the
"RANGE" key
.
5.1.5 Measurement values are saved by pressing the "HOLD" button
. The
"H" annunciator appears in the display. By pressing the button again the
tester returns into measurement mode.
5.1.6 The nominal measuring rate of the BENNING MM 1 display is approx.
2 measurements per second. The bar graph measuring rate is approx.
12 measurements per second.
5.1.7 The BENNING MM 1 is turned on and off using the rotary switch
.
Unit is turned off when switch is in "OFF" position.
5.1.8. The BENNING MM 1 is automatically switched off after 10 min. You can
switch it on again by means of the "RANGE" key
.
5.1.9 Temperature coefficient of the measurement reading: 0.15 x (given
accuracy)/ °C , < 18 °C or > 28 °C.
5.1.10 The BENNING MM 1 is powered by two 1.5 V batteries (IEC LR03/
"Micro").
5.1.11 When the battery voltage drops below the operating voltage of the
