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preset), “update” (equivalent to exclusive message + message management) or “inclusive message”
(equivalent to update + audio data). The soft key “send” starts the data output via the REMOTE/RS232
connector.
This menu item is meant for data transfers into a computer. This function can also be executed via
command at the RS232 interface. A precise description of the necessary control steps and data formats
is to be found on the pages 33 - 35. The EXIT key switches to the prior menu level.
Restore
Confirming “Restore” with the soft key “ok”, the display shows"Restore release". This mode provides the
possibility to restore preset data which previously had been saved using the “Backup” procedure via the
REMOTE/RS232 interface. Since only user 3 has access to the“Restore” command, unauthorized
modification of the DMM 4650 via the remote interface and other sequences (priority) interrupting a
“Restore” process in progress is impossible.
A precise description of the necessary control steps and data formats is to be found on the pages 33 -
35. The EXIT key terminates this mode (returning to the prior menu level).
RS232
Confirming “RS232" with the soft key ”ok", displays the current baud rate of the REMOTE/RS232 interface.
With the cursor keys the desired data rate can be set and is effective immediately. Normally, this
adjustment is necessary before “Backup” or “Restore” and remains in memory. This function can also be
executed via command at the RS232 interface. A precise description of the necessary control steps and
data formats is to be found on the pages 33 - 35. The EXIT key switches to the prior menu level.
Clock
Confirming “clock” with the soft key “ok”, date and time together with soft key “set” appear on the display.
After pressing “set”, date and time are set anew using the cursor keys. The clock has no power reserve
at missing supply voltage and is necessary only for the error log in “self test”. With Power-ON the clock
always starts from the same value.
Setting date and time is also be achieved via command at the RS232 interface. A precise description of
the necessary control steps and data formats is to be found on the pages 33 -35. The EXIT key switches
to the prior menu level.
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