10
Button
Press
Function
Comment
Fn + V
s
Increment in 10 V steps
Voltage range between
50
and
1000
V
Fn + V
t
Decrement in 10 V steps
Voltage range between
50
and
1000
V
Fn + V
s
Increment in 25 V steps
Voltage range between
1000
and
5000
V
Fn + V
t
Decrement in 25 V steps
Voltage range between
1000
and
5000
V
Fn + T
s
or T
t
Cycle through timers
Select main timer, T1
or
T2
Fn + Mode
Cycle through IR modes
Select breakdown,
burn
or alarm limit for IR
test
Fn +
Download mode
See ‘Downloading
results’
Fn +
Clear stored data
The ‘record’ button is
pressed
twice
Mode button
Press down on the ‘MODE’ button to cycle through and select the test
mode. Modes of test to be chosen from include an insulation resistance
‘IR’ test, a polarization index ‘PI’ test, a step voltage ‘SV’ test, and a
dielectric discharge ‘DD’ test.
The insulation resistance ‘IR’ test operates in either ‘burn’ or ‘breakdown’
mode, with an option of setting a resistance threshold ‘alarm limit’. These
modes can be cycled through and selected by holding down the Fn
B
button
Pressing this button toggles the display backlight on and off.
Fn button
The function button when pressed allows other keys to perform another
function. This is summarized in the table below. ‘V
s
and ‘V
t
represent
the test voltage buttons. ‘T
s
and ‘T
t
represent the timer buttons.
Press
Ω
/I
Press
Ω
/I
Figure 4 - The result of a step voltage (SV) test
Test condition: timer defaults to 5 minutes and test voltage defaults to
1000 V.
