Clarke CDM 85, Инструкция по эксплуатации и техническому обслуживанию

Страница: 7 / 12

7
Measuring Resistance
1 Insert the plug of the black test lead to the “COM” jack, the plug
of the red test lead to the ‘V
Ω
’ jack.
2 Set the rotary switch to the desired resistance range position
(“2000
Ω
“ or “200k
Ω
“).
3 Connect the test leads across the load to be measured.
4 Read the reading on LCD.
Note:
The built-in buzzer will sound when the resistance being measured is
less than about 30
Ω
with the rotary switch in “2000
Ω
” position.
Before you do in-circuit resistance measurement, make sure that the
power of the circuit has been disconnected and all the capacitors
have been discharged.
Measuring for continuity
1 Insert the plug of the black test lead to the “COM” jack, the plug
of the red test lead to the ‘V
Ω
’ jack.
2 Set the rotary switch to the “ “ position.
3 Connect the test leads across the load to be measured.
4 When the resistance being measured is less than about 30
Ω
, the
buzzer will sound.
Measuring Diode
1 Insert the plug of the black test lead to the “COM” jack, the plug
of the red test lead to the ‘V
Ω
’ jack. ( the polarity of the red
test lead is “+”).
2 Set the rotary switch to the “ ” position.
3 Connect red test lead to the anode of the diode, black test lead
to the cathode of the diode.
Read the approximate forward voltage on LCD.
Note: Reading’s unit is “mV”.