NSG 438
26
Should a parameter need changing the operator has only to press on the
relevant field in order to call up the appropriate menu.
The value of discharge voltage is displayed following a successful air
discharge. A differentiation is made between this and the set value by the
display
kV
being inversed. If no valid discharge occurred, the display
shows a 0 value. The
Threshold
function (see section “Threshold”)
permits various settings for the sensitivity of the breakdown voltage
detector.
The effective discharge voltage depends on various factors such as the
distance to the discharge point, speed of approach, nature of the EUT, etc.
In the case of a contact discharge this measurement is not carried out
since only a discharge current can occur.
The instrument switches itself off automatically after 15 minutes of non-
use.
6.2.
Battery monitoring
The battery charge state is monitored continuously. An insufficiently
charged or an empty battery is shown on the display.
Recharge the battery soon when this symbol is displayed.
Correct operation and valid pulse parameters are still assured.
The battery is more or less empty; its capacity is insufficient to
maintain all the instrument’s functions. An appropriate warning
message is shown on the screen and all the instrument’s
functions are inhibited.
