User Manual

MX180T - triple output 375 watt dc power supply - 2 x 30V/6A (120V or 20A max.)
Clarity and ease-of-use
Unlike some other multi-output power supplies, the MX Series displays
voltage, current and other essential information for all outputs
simultaneously using its backlit graphic LCD.
The illuminated keypad includes six soft keys via which voltage or current
can be instantly set for any output, or which can be used to set up other
functions using a menu system.
Values can be set numerically direct from the keypad or can be adjusted in
a quasi-analog manner using the spin wheel.
Individual output display
Each output also has an individual display mode which provides larger
digits and enables OVP, OCP, current meter averaging and range to be
viewed and changed.
Access to 50 memory stores for the output is also available from this screen.
Up to 1mV and 0.1mA resolution
For applications requiring the highest accuracy and resolution, output one
(MX100T) and outputs one and two (MX180T) provide 5 digit setting and
metering with 1mV and 0.1mA resolution.
Other outputs use four digits giving a resolution of 10mV and 1mA.
Double power from a single output
When a higher power level is needed, two outputs can be combined
internally to provide 210 watts (MX100T) or 360 watts (MX180T) from a
single output.
Current meter averaging
When measuring rapidly varying loads it can become difficult to get useful
readings from a digital current meter.
By selecting meter averaging, the reading is stabilised by displaying
the average of several readings to reduce the speed and extent of the
variation.
Voltage Tracking
The three outputs of the are completely independent and isolated.
However it is possible to set the power supply up so that the voltage on
an output automatically tracks the voltage on another output.
Because the outputs are isolated, tracking can be used to set equal
voltage of the same polarity or opposite polarities. It can be useful when
outputs have been wired in parallel or series where control can be made
by adjusting a single output voltage.
For the MX180T the tracking arrangement is simply V2 tracks V1.
For the MX100T, three voltage tracking arrangements can be set:
V2 tracks V1, V3 tracks V2 or V2 and V3 both track V1.
Low noise cooling
The MX series uses an intelligent fan controller which monitors both
ambient temperature and power loading.
Under normal operating conditions the fan is almost silent.
200 settings stores
Non-volatile stores are incorporated for rapid recall of voltage and current
settings (along with Range, OVP and OCP).
Each output has its own set of 50 stores, but an additional set of 50 linked
stores is provided that contain values for all three outputs to be recalled
simultaneously.
OVP and OCP trips
Variable trips for over-voltage and over-current are provided on each
output. Unlike a limit setting, the trip setting turns the output off and
provides a different level of protection.
For example, when repetitively testing a unit which normally takes a peak
current of 4A, the current limit could be set to 5A and the OCP to 4.1A to
ensure that a faulty unit will trip the supply off and not be damaged by
over dissipation.
The output trip can also be activated by other fault conditions including
over temperature and remote sense mis-wiring. The cause of the trip is
shown on the display.
Front panel locking
An illuminated front panel key locks out the keypad
to guard against accidental mis-setting.
For even greater security, as might be required when
the PSU is incorporated into a fixed system, the
keypad can be locked using a pass code chosen by
the user.
Advanced user interface
Illustration shows MX100T display
MX180T display is similar
Illustration shows MX100T display
MX180T display is similar
Illustration shows MX100T display
MX180T display is similar
Illustration shows MX100T display
MX180T display is similar