XTRONIC PX-70 User manual
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TABLE OF CONTENTS
Product Specifications......................................................2
Package Contents .............................................................3
Safety Precautions ............................................................4
Unit Diagram ......................................................................5
Features / Modes ...............................................................6
Voltage Regulation.................................................................. 6
Current / Amperage Regulation .............................................. 6
Adjustable USB Interface........................................................ 6
Constant Voltage (CV) Mode .................................................. 6
Constant Current (CC) Mode .................................................. 6
Continuous Overcurrent Protection (CONT.OCP)................... 7
Once Overcurrent Protection (ONCE.OCP)............................ 7
Lock / Unlock........................................................................... 7
5V Limit Mode ......................................................................... 8
Over Temperature Protection (OTP) ....................................... 8
Over Power Protection (OPP)................................................. 8
Memory Recall Buttons........................................................... 8
Initial Set-up.......................................................................9
Operating Instructions......................................................9
Maintenance.....................................................................10
Replacing the Fuse .......................................................10
Troubleshooting ..............................................................11
Warranty ...........................................................................12
Contact Information ........................................................14
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SPECIFICATIONS
Model XTR-PX-70
Power Consumption 160 Watts
Power Cord USA Type B - 3-pin Grounded Plug
Input Voltage AC 110V 60Hz
Dimensions 7.25 L x 4.5” W x 9.0” H
Weight 9.5 lbs
Working Environment 32°F ~ 104°F / 0°C ~ 40°C
Storage Environment -4°F ~ 158°F / -20°C ~ 70°C
Storage Humidity 35% - 45%
Constant Output Voltage
Range
0-30V Continuously Adjustable
Voltage Resolution 0.01V
Voltage Output Accuracy ±0.02V
Constant Output Current
Range
0-5A Continuously Adjustable
Current Resolution 1 mA
Current Output Accuracy <0.1 +3 mA
Recovery Time 100uS
Ripple < 3mArms
Read Back Accuracy 1 mA
Temperature Coefficient <0.1% +5mA
Read Back Temperature
Coefficient
<100 ppm + 5 mA
Output Current Protection
(OCP) Current Value
0-5A
OCP Accuracy 0.01A
Signal test frequency
range
30~1800MHZ (including cell phone
signal test)
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PACKAGE CONTENTS
• 160 Watt Main DC Power Supply Meter
• 3 High Quality Stackable Banana Plug to Alligator Clip Leads
(positive, negative, & ground)
• 2 High Quality Banana Plug to Precision Probes (positive &
negative)
• 2 High Quality Stackable Banana Plug to Hook/Plunger Leads
(positive & negative)
• Magnetic Project Work Mat / Quick Reference Operation Guide
• User Manual
• Power cord
- 4 -
SAFETY PRECAUTIONS
1. Always use a grounded outlet for the unit to avoid shock.
2. Always turn the power off and unplug the unit when not in use.
3. Always ensure the fan and intakes are clear of obstruction and is
not blocked/obstructed in any way.
4. Do not modify the unit in any way.
5. When replacing consumable parts, only use approved
manufacturer parts.
6. When replacing the fuse, always unplug the unit before changing
the fuse. Always replace with a comparable fuse - do not replace
with something different.
7. Do not get the unit wet or use when your hands are wet.
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PANEL DIAGRAM - FRONT
5V/LIMIT
CONT.OCP
ONCE.OCP
C.C
C.V
LOCK
M1 M4M3M2
CONT.OCP ONCE.OCP
1
2
3
4
5
67
8
9
10
11
12
13
14
15
16
1. Voltage Display Meter
2. Current / Amperage Display
Meter
3. Memory Recall Buttons
4. Voltage Regulation Knob
5. Power Switch
6. USB Output
7. Power Output Terminals
(Positive, Negative, & Ground)
8. Current Adjusting Knob
9. Continuous Overcurrent
Protection Button
10. Single Overcurrent Protection
Button
11. Lock Indicator
12. Constant Voltage Output
Indicator
13. Constant Current Output
Indicator
14. Single Overcurrent Production
Indicator
15. Continuous Overcurrent
Protection Indicator
16. 5V Output Limit Indicator
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UNIT DIAGRAM - BACK
1
2
3
4
1. Fan
2. 5V/30V Switch
3. AC Input Receptical
4. Fuse
FEATURES / MODES
Voltage Regulation
Briefly press the Voltage (V) knob to select the digit that you want
to adjust, the digit will blink when it is selected. Then turn the
Voltage knob to adjust the voltage to the required setting.
Current/Amperage Regulation
Briefly press the Amperage (A) knob to select the digit that you
want to adjust, the digit will blink when it is selected. Then turn the
Amperage knob to adjust the amps to the required setting.
Adjustable USB Interface
The USB port is also regulated by the voltage and current settings
on the unit. Make sure to set a safe voltage and current/amperage
when using this USB port. To use the USB port, plug in an USB
adapter to the unit and the other end into the device that requires
power.
Constant Voltage (CV) Mode
This is the default mode for the power supply. Once the voltage
and current limits have been set, the device that is being powered
is connected and the power supply is turned on, the unit will
output the voltage limit while varying the amps, the C.V indicator
will be lit. If the unit reaches the amperage limit that is set, it will
automatically switch to constant current (CC) mode.
- 7 -
Constant Current (CC) Mode
In order for the unit to switch to CC Mode, the Amperage limit
needs to be set lower than what is needed based on the Voltage
limit set. Once the device being powered pulls enough current /
amps to hit the set limit, the unit will automatically switch to CC
Mode, the C.C indicator will be lit and the Volt will start to vary
while keeping the Amps constant. CC Mode will not be triggered if
either of the OCP features are activated.
Continuous Overcurrent Protection
This is the most commonly used mode of protection. In CONT.OCP
mode the output will be shut down when the current draw hits the
limit set by the user. The unit will continue to test this limit after the
protection has been triggered keeping the output at zero until the
load is removed. Once the device is disconnected from the leads
the voltage and amperage are immediately restored and output
automatically resumes.
Press the CONT.OCP button on the front of the unit to enable this
feature, the unit will beep once, and the LED will indicate that the
feature is enabled.
When the current draw reaches the value set by the user the
output will halt, the display panel will show all zeros for both
voltage & amperage and the unit will beep continuously for two
seconds to alert the user that the CONT.OCP has been triggered.
Once CONT.OCP has been triggered, the leads will need to be
disconnected from the device to remove the load and restore the
output. At that time the voltage and current regulations will be able
to be adjusted.
Once Overcurrent Protection
In ONCE.OCP mode the output will be shut down when the current
draw hits the limit set by the user.
Press the ONCE.OCP button on the front of the unit to activate this
protection mode, the unit will beep once, and the LED will indicate
that the feature is enabled.
While in this mode, the output will be shut down when the current
draw reaches the value set by the user. The display panel will
show all zeros for both voltage & amperage and the unit will beep
continuously for 2 seconds to alert the user that the ONCE.OCP
has been triggered.
Once this has been triggered, disconnect the leads from the device
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to remove the load and press the ONCE.OCP button. The voltage
and current regulations will be restored and output will resume.
LOCK / UNLOCK
Press and hold the Voltage knob for two seconds to lock all of the
settings currently programed in the unit. Only the Power button will
still function when the unit is locked. To unlock the unit, press and
hold the Voltage knob for two seconds again.
5V Limit Mode
This unit comes with an option to limit the voltage output to 5V
when working on delicate components. To switch the available
voltage output from 30V to 5V, ensure the unit is powered off and
slide the switch on the back of the unit to read 5V. When the unit
is powered back on, the 5V indicator on the front of the unit will be
lit and the voltage output will not be able to be set above 5V. When
working with sensitive low voltage parts, this can help to ensure
they are not overloaded.
Over Temperature Protection (OTP)
The unit is equipped with a self-regulating fan to ensure that
the unit does not overheat. The fan will not run under normal
circumstances, however if the unit temperature rises to a point that
the fan is needed it will automatically kick in to dissipate the heat
from the unit. It is important that the back of the unit has plenty of
space behind it for this to work effectively.
OVER POWER PROTECTION (OPP)
The unit also has Over Power Protection.
MEMORY RECALL BUTTONS
This unit has 4 memory recall buttons that can be programmed
so you can save commonly used settings. The voltage, amps,
continuous/once output current protection (CONT.OCP), and
constant current/voltage settings will all be saved in the memory
button.
To save the current settings of the unit to a memory button, press
and hold the memory button of choice for two seconds, the unit will
beep indicating it has saved the settings.
To choose a preset, simply press the memory recall button briefly
and the settings on the unit will update automatically.
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