DETAILED OPERATION - Section 4
MTS-1700 SERIES OPERATION AND REFERENCE MANUAL 4-47
CU A002 15A
MANTA TEST SYSTEMS
3. To provide user action feedback
A short beep provides pushbutton feedback whenever a pushbutton action changes some mode or state. A
beep doesn’t sound when a pushbutton action results in no changes.
This feature is always enabled and isn’t affected by the [TONE] button activation.
4. To indicate warnings
A one hertz pulsing tone, along with warning annunciators (see Section 4.13), indicates overload of one or
more outputs.
This warning tone must be enabled by using the front panel menu. (See Section 5.9).
4.12
ADJUSTING POSTFAULT VALUES
To simulate certain conditions, such as auto-reclosing or multiple stage faults, it may be necessary to set
postfault values of current, voltage, phase and frequency.
To set postfault values:
Select static operation mode, and press the [POSTFAULT] button, until postfault light is on.
Set the desired postfault V, I, phase (and frequency if using variable frequency reference mode).
To use these postfault settings in a dynamic test:
Select dynamic mode. Turn postfault on to apply programmed postfault values in postfault state.
Note that, when a dynamic test is performed and a stop trigger occurs, the measured values will be frozen
at the time of the stop trigger. These will be fault values and not the postfault values which are actually being
output in the postfault state.
Note that separate prefault, fault and postfault values are not available for the current in I2-harmonic, I4-DC
and I1&I2 current modes.
4.13
WARNING ANNUNCIATORS
Clipping overload, and overtemperature warnings are annunciated on the [MODE/MENU DISPLAY].
When any of these conditions are present, the display will alternate between the normal display and the
warning display. All warnings will continue to flash until the causing condition has been removed.