Record Button; Recording To On-Board Memory; Downloading Results; Deleting Results - Megger MIT520/2 User Manual

and pressing the Mode button.
Timer L and M buttons
The main timer can be set up to 99mins 59secs. The TL button
increments the time, and the TM button decrements the time in ten
seconds steps. An auto repeat facility allows the time to be set more
quickly. Setting a time of 00:00 disables the timer. With the timer disabled
a test has to be manually stopped.
The minimum timer setting is 15 seconds for test voltages of 1000 V or
more, and 30 seconds below this.
To select timer Tmain, T1 or T2, hold down the Fn button whilst
repeatedly pressing the TL or TMbuttons. To set the selected timer,
release the Fn button, and the use the TL or TMbuttons.
Note: T2 cannot exceed the time on main timer unless it is disabled
(00:00). T1 cannot exceed the time on T2.

Record button

This button is used to start and stop recording. Recording can only be
activated before testing. When data recording is enabled the 'record'
symbol flashes.
Data is stored in solid-state memory and under normal circumstances will
maintain its integrity for in excess of ten years, but may rarely be
corrupted or lost by external influences such as transients and static
discharge. Megger Limited cannot accept responsibility for any losses of
data. Regular downloading to a PC using software such as Download
Manager will substantially reduce any such risk.

Recording to on-board memory

Press the record button to start and stop recording. When data recording is
enabled the record symbol will flash on and off repeatedly. Recording can
only be activated before testing commences. Results are stored at 15, 30, 45
and 60 seconds. After 60 seconds, at minute intervals up to 10 minutes.
After 10 minutes, results are recorded at 5 minute intervals until the test
terminates. At each interval the recorded data will contain selected voltage,
test time elapsed, voltage applied, leakage current, and insulation
resistance.

Downloading results

Connect the instrument to the RS232 / USB port of a PC running Download
Manager. Refer to section 'RS232 / USB connection' for set up details. Start
Download Manager on your PC, select the MIT520 / MIT1020 driver and
right click the icon. Select 'Download'.
Switch the instrument on and wait until initialisation is complete. Press the
function key along with the record key. The instrument now displays 'dld'
to indicate download mode. Press and hold down test button until
download begins, shown by analogue display lighting clockwise.
Results will not be erased during this operation and so may be downloaded
repeatedly.
Deleting test results
Switch the instrument on and wait until initialisation is complete. Hold
down the function key and press the record key twice. The instrument now
displays 'clr' to indicate clear mode. Press and hold down test button until
clear process begins, shown by analogue display lighting anti clockwise.
Press the MODE button to exit without deleting the results.
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