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DETAILED OPERATION - Section 4
4-48
MTS-1700 SERIES OPERATION AND REFERENCE MANUAL
MANTA TEST SYSTEMS
CU A002 15A
The following warning annunciators may be triggered:
Note that multiple overloads may be annunciated. For example, “OVERLOAD: Vac” will indicate overload
on both Va and Vb.
An audible warning tone also can be activated to alert these conditions. See Section 5.9.
If overload warnings persist for more than 12 seconds, the warning tone will be forced “on” to alert the user.
If the warnings persist for 20 seconds, the MTS-1710 (and MTS-1720, if used) will shut off all power
outputs, and the following message will be blinked on the display:
When this occurs, the outputs can be restored by pressing the [STOP/RESET] button (or by the RS-232
“RES” command). However, all amplitude settings will be forced to zero. This will prevent immediate re-
entry into an overload condition, if remedial action wasn’t taken.
Annunciator
Cause
Required action
Va
Clipping overload of Va output
Decrease Va voltage or decrease loading on Va
output
Vb
Clipping overload of Vb output
Decrease Vb voltage or decrease loading on Vb
output
Vc
Clipping overload of Vc output
Decrease Vc voltage or decrease loading on Vc
output
I
Clipping overload of current
output in I1, I3 or I4 output
Decrease current/lower the load impedance
I1
Clipping overload of I1 output in
I1&I2 current mode
Decrease I1 current/lower the load impedance
on the I1 output
I2
Clipping overload of I2 output in
I1&I2 or I2-HARMONIC current
modes
Decrease I2 current/lower the load impedance
on the I2 output
Ia
Clipping overload of Ia output in
I3-WYE current mode
Decrease Ia current/lower the load impedance
on the Ia output
Ib
Clipping overload of Ib output in
I3-WYE current mode
Decrease Ib current/lower the load impedance
on the Ib output
Ic
Clipping overload of Ic output in
I3-WYE current mode
Decrease Ic current/lower the load impedance
on the Ic output
OVERTEMP
Thermal overload of amplifier
system
Set voltage and current outputs off to allow
system to cool
* WARNING: OVERLOAD
SHUTDOWN PRESS RESET