User manual

24 GMC-I Messtechnik GmbH
2.9 Input Control
2.9.1 Turning On/Off the Load
The input can be turned on/off by pressing the key, or via the remote command (INPUT ON/OFF). If the load’s input stays in OFF
status, press the key to turn on the input; if the load’s input stays in ON status, press key to turn off the input.
Turning the input on/off (zero current) does not affect the programmed settings. In local control, if the input is turned on, the load status
can not be switched directly among the basic modes, transient operation, list operation, battery discharge operation, etc. The load can
be switched from one operation status to another operation status only when the input is turned off.
2.9.2 Von Point / Von Latch
When the external input voltage is less than the Von Point, the load will not be enabled even though the input has been turned on.
The load will be enabled till the external input voltage reaches or exceeds the Von Point. Von Latch is used to latch the active status of
the load. If the Von Latch function is enabled, once the input voltage reaches Von Point, the input will be turned on, and stay in ON sta-
tus regardless of the changes from the external input voltage, even though the input voltage is less than the Von point. Please see Fig-
ure 2.11.
if the Von Latch function is disabled, once the input voltage reaches Von Point, the input will be turned on automatically, and once the
input voltage is less than the Von Point, the input will be automatically turned off. Please see Figure 2.12.
The automatic turning on /off of the input can be implemented via setting the Von Point and Von Latch, which simplifies test operation
greatly.
The Von voltage can be set in main menu, or via the remote command (INPut:LATCh:VOLTage <NRf+>).
The Von Latch can be set in main menu, or via the remote command (INPut:LATCh ON | OFF).
Figure 2.11 Von Latch is enabled
Figure 2.12 Von Latch is disabled
Note
If the load is unable to operate normally, please check the setting of Von Point.