Справочник Пользователя для Monarch Autoranging Digital Multimeter 110

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MODEL 110 AUTORANGING DIGITAL MULTIMETER 
 
 
4.0 Control Functions: 
4.1  Function Selector Rotary Switch 
The rotary switch turns power on to the instrument and selects the 
function to be measured. The functions available and their 
specifications are detailed in Section 2.0. 
4.2 Range 
Selection 
In all functions except 
(Diode Test) and A  (AC or DC 
Current), the instrument powers on in the Autoranging mode and 
the  AUTO  symbol appears in the display. To select a range 
manually, press the ‘Range’  button. The Manual Range symbol 
will appear in the display, and the instrument will then be locked in 
the range selected. When in the Manual mode, each successive 
press of the ‘Range’ button increases the measurement range. 
Range selection loops back to the lowest range when advanced 
from the highest range. To exit the Manual mode, press and hold 
the ‘Range’ button for one second or rotate the Function Selector 
switch to a different measurement function, and the instrument 
returns to the Autoranging mode. 
4.3 Relative 
Operation 
Pressing the 
UREL button zeroes the display and internally 
stores the present reading as a reference for subsequent 
measurements. The main display now shows the difference 
between the stored value and the new reading. Press and hold 
the 
UREL for one second to exit the Relative mode. 
4.4 MAX/MIN 
Operation 
Press the MAX MIN button to enter the MAX/MIN mode. In this 
mode, both the maximum and minimum values are 
simultaneously retained in memory and updated with every new 
data sample. The instrument first enters the MAX mode, and the 
MAX symbol and value are both displayed. Pressing MAX MIN 
again advances the display to the MIN symbol and value. The 
next press of the MAX MIN button will cause both the MAX and 
MIN symbols to flash. This indicates that the maximum and 
minimum values have been updated in memory and the displayed 
 
 
MODEL 110 AUTORANGING DIGITAL MULTIMETER 
 
 
10 
5.6 Diode 
Tests 
 
WARNING! 
Before making any in-circuit measurements, remove power from the circuit being 
tested and discharge all capacitors in the circuit. 
 
1.  Connect the red test lead to the 
 
jack and the black test lead to the 
‘COM’
 
jack. 
2.  Set the Function Selector switch to the 
  range. 
3. Remove power from the circuit being 
tested and discharge all capacitors in 
the circuit. 
4.  Connect the red test lead to the anode 
side and the black test lead to the 
cathode side of the diode being tested. 
5.  Read the Forward Voltage (V
f
) on the 
instrument display. 
Note:  If the polarity of the test leads is reversed, the display will 
read  ‘
OL’.  This can be used to determine the anode and 
cathode terminals of a diode. 
5.7 Frequency 
Measurements 
1.  Connect the red test lead to the 
‘Hz’
 jack 
and the black test lead to the 
‘COM’
 jack.   
2.  Set the Function Selector switch to the 
Hz range. 
3.  Connect the test leads in parallel with 
the circuit being measured.     
4.  Read the frequency on the instrument 
display.