Model Q 1074A - OPERATION MANUAL
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2.7 Capacitance measurement
1) Before testing, discharge the capacitor by shorting its leads together. Use caution in handing
capacitors because they may have a charge on them of considerable power before
discharging.
2) Connect the black test lead to "
COM
" socket and red test leads to the "
V/
Ω/
/Hz
"
socket.
3) Set the selector switch to
“
”
position.
4) Press
SELECT
button to choose Capacitance measurement.
5)
Press “
∆
” button, you can use the relative function to eliminate the zero error.
6) Connect the probes across capacitor to be tested.
Caution: Ensure that the circuit to be tested is "dead". Max. input over-load: 250V RMS. And
<10sec.
2.8 Temperature Measurement
1) Connect the black test lead to "
COM
" socket and red test leads to the "
V/
Ω/
/Hz
"
socket.
2)
Set the selector switch to desired “
TEMP
” position.
3) Press
SELECT
button to choose
℃
or
℉
measurement.
4) Put the sensor probe into the temperature field under measurement.
5) Read the result from the LCD panel.
2.9 Frequency measurement
1) Connect the black test lead to "
COM
" socket and red test leads to the "
V/
Ω/
/Hz
"
socket.
2)
Set the selector switch to “
Hz
” position.
3) Connect the probes across the source or load under measurement.
2.10 Auto Power Off
When the meter has been turned on about 10 minutes without any action from the users, the
meter will auto
matically change to “OFF” mode, and you can press any function button to wake
up again.
If press and hold
RANGE
button to turn on the meter, the AUTO POWER OFF
function will be canceled.
2.11 Using Communications
1) Connecting the RS232 (USB) cable to the meter and a computer as shown in Figure 1, then
turn on the meter.
2) Press button more than 2 seconds on the panel to start the RS232 communication
3) function. If you want to cancel the RS232 function, please press the button more than
2 seconds once again.
4) About the further information of communication, please refer to the on-line help of Data Logger
attached.
Remarks
: For computer connection, the baud Rate under Set Com Port (Option) should be 9600.
USB Port
Figure 1: RS232 Communication
