NSG 438
12
§
The instrument switches itself off automatically if it is not used for
a while. The pulse parameters and operating mode remain
stored and ready for re-use.
§
The charge voltage to the network is kept constant as long as the
trigger is active. The high voltage is discharged internally when
the trigger is reset.
§
If no discharge occurs when set for an Air-Discharge and the
trigger is active, the processor waits for about 15s then auto-
nomously resets the trigger and discharges the network internally
with simultaneous acoustic warning.
§
A measurement facility detects an actual valid discharge and
shows it on the display.
§
Pulse triggering is monitored. Once an arc has occurred the
network is discharged internally so that no further arcing is
possible.
4.1.3.
Operating elements
Apart from the trigger button itself (pulse triggering), all the operating
elements, test-relevant setting and user information are presented on the
touch-sensitive display panel facing the operator.
The NSG 438 is switched on and off with the main power switch. The
significance of the elements in the display field can be seen in the
following picture. Further information can be found in section
“
Operation”.
