Major
Faults
UV
— Undervoltage DC ON will not function until voltage is greater than
the Under Voltage setting. See the section below.
OV
— Overvoltage
Units internal relays will open disconnecting the load
from the source.
Temp
-
Overtemperature
Units internal relays will open disconnecting the load
from the source.
AC
— AC
Indicates that there is an low AC line voltage.
Minor
Faults
I-Lim
—
Overcurrent
Unit has reached the set current limit or the current limit
of the selected range.
P-Lim
—
Overpower
Unit has reached the set power limit.
SAT
— Saturation
Saturation condition whereby one or more of the
electronic power components are completely saturated.
This may be due to insufficient source voltage,
inadequate wiring, or excessive line loss. This may also
indicate an open power device.
Programmable Under Voltage
The XBL also has a Programmable Under Voltage feature. This feature provides a means to have
the load automatically stop loading when the input voltage from the device under test, drops
below the defined threshold.
The Programmable Under Voltage can be set to generate a fault when the Voltage drops below
its defined Voltage. The Voltage level can be programmed through menu item #18 or the
through the RS 232, Ethernet, IEEE 488 interface using the UV command. This will open the
load connect relay and generate a UV fault. Once the input voltage has dropped below the
Programmable Under Voltage threshold causing a UV fault, the load will not re-connect until a
DC LOAD ON is commanded. For this reason the input Voltage must be above the
Programmable Under Voltage setting before performing a DC LOAD ON. Otherwise a UV fault
will occur immediately and the DC LOAD ON will be canceled. Setting the Programmable
Under Voltage to zero disables this feature.
Menu Commands
The menu commands are accessible through the front panel by pressing the MENU key and
turning the encoder knob through the menu selections. Table F lists the menu commands and
their relative number in appearance. The subsections in this section detail each of the menu
commands. Referring to Table F, the menu features are as follows:
Table F. Menu Commands
Number
Menu Command
1
MODEL
2
SERIAL
3
VERSION
4
BUILD DATE
XBL Series 404078 Rev P2.odt Page 27 Of 162
Содержание XBL 400
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