result in an error message to the user that the 4
th
voltage channel is not in place or
operating. To set an output value, press the Magnitude window and enter the desired
value. Set the output to the desired voltage as listed in the following Table and initiate the
output by pressing the Start button. The selected output indicator will change from Green
to Red. UUT output will be displayed on Touch View Interface (TVI). Repeat for all ranges
and values listed in the Table. Note: a minor adjustment in the metered output voltage
maybe required in order to achieve the desired test voltage. With the output on, touch the
Magnitude window and it should change color to Red. Using the Control Knob adjust the
output voltage to get the desired output voltage. One click on the Control Knob is
approximately 0.01 Volts.
Table 4 AC Volts Output Test Values
AC Volts
Output
Output Voltage
Measured
Output
Range Setting Tolerance
UUT MIN.
MAX.
30V
3.0
±0.1%
2.97
3.03
15.0
±0.1%
14.97
15.03
30.0
±0.1%
29.97
30.03
150V 75.0
±0.1%
74.85
75.15
150.0
±0.1%
149.85
150.15
300V
300.0
±0.1%
299.7
300.3
To test DC Voltage accuracy change the output frequency to DC by pressing the Freq.
button for the appropriate output channel. Enter 0 for the frequency and the Freq window
will change to DC. To set an output value, press the Magnitude window. Set the output to
the desired voltage as listed in the following Table and initiate the output by pressing the
Start button. The selected output indicator will change from Green to Red. UUT output
will be displayed on Touch View Interface (TVI). Repeat for all ranges and values listed.
Table 5 DC Volts Output Test Values
DC Volts
Output
Output Voltage
Measured
Output
Range Setting Tolerance
UUT MIN.
MAX.
30V
3.0
±0.25%
2.925
3.075
15.0
±0.25%
14.925
15.075
30.0
±0.25%
29.925
30.075
150V 75.0
±0.25%
74.625
75.375
150.0
±0.25%
149.625
150.375
300V
300.0
±0.25%
299.25
300.75
6.4.4
Checking AC Amperes / DC Amperes
Connect the current output of the MPRT to the appropriate DMM or Power Multimeter (for
DC current connect to the appropriate shunt to the DMM). From Main Menu press the
Manual Tests display button. Press the Voltage/Current button. Using TVI, select a
current output channel by pressing either I1, I2, I3 or I4. Note: The unit is modular and
may not have four output modules installed. To set an output value, press the Magnitude
window and enter the desired value. Set the output to the desired current as listed in the
following Table and initiate the output by pressing the Start button. The selected output
-
165
www
. ElectricalPartManuals
. com
