25
Information, Warning and Error Messages
Three classes of message are displayed on the screen in a Pop-up Box.
INFORMATION messages are shown to inform the user of actions that are being taken, for
example:
Please wait... the current settings are being saved
WARNING messages are shown when the entered setting causes some change which the user
might not necessarily expect. For example:
With square-wave selected at 1MHz and a Duty cycle of 25%, select sinewave and change
the frequency to 25 MHz. Then select square-wave again and the message
Duty cycle
has been changed, Fixed to 50% for current frequency
will pop up.
ERROR messages are shown when an illegal setting is attempted, most generally a number
outside the range of values permitted. In this case the entry is rejected and the parameter setting is
left unchanged.
Examples are:
1.
Entering a frequency of 2MHz for a ramp waveform. The error message
"Frequency
invalid Upper limit 1MHz"
is shown
.
2.
Entering a sinewave amplitude of 25Vpp. The error message
"Amplitude invalid
Upper limit 10.000 Vpp"
is shown
3.
Entering a DC offset of 20V on a sinewave with an amplitude of 1.000 Vpp. The error
message
"Offset invalid Upper limit 4.500 Vdc"
is shown.
The messages are shown on the display for approximately four seconds; however, pressing any
key will immediately remove the Pop-up Box and execute the function of the key which is pressed.
The last two messages can be viewed again by pressing the
Help
key
(
UTILITY-
Help
on a
dual channel instrument) and selecting the first or second entries from the Help menu, see Help
Operations section.
Each message has a number and the full list appears in Appendix 1.
Each warning and error message is accompanied by a beep. The beep may be enabled or disabled
in the UTILITY-
System
menu.
