MSTRONIC MSR-1231 User manual

MSR-1231
Switching Power Supply
For various applications
User’s Guide
MSTronic CO. Ltd.
[email protected]

Important safety information
Please read these warnings before using the MSR-1231 series power supply.
Warning: Safe operation
To reduce the risk of fire or electric shock, please adhere to these warnings:
Moisture: Do not expose this appliance to water or moisture.
Cleaning: Unplug the power supply from the mains power outlet before
cleaning. Switching off the power supply will not reduce this risk.
Ventilation: Place the power supply in an area that will allow air to flow
freely around the unit. This will prevent the power supply and mobile radio
from overheating. Do not block or obstruct any of the ventilation openings on
the unit.
Warning: Electrical connections
To reduce the risk of fire or electric shock, please adhere to these warnings:
The power supply should be properly connected and grounded. Use the
provided AC power cable to connect the power supply to a mains power
outlet that is properly installed and grounded, in accordance with all local
codes and ordinances. If the power supply cord is damaged, it must be
replaced with the same type to comply with safety requirements.
Warning: Servicing
This power supply should be serviced by a qualified service technician.
Incorrect assembly may result in electric shock or fire.
Warning: High voltage levels
Some of the components inside the power supply can operate at voltage
levels that may be lethal.

User information
The MSR-1231 series power supplies enable you to use with any electronic
products.
Check the mains supply voltage
Before you plug in and turn on the power supply for the first time, please
check the mains supply voltage.
The voltage rating of the power supply is printed on a label on the cover of
the unit and the voltage selector on the rear panel. Verify that it corresponds
with your local mains supply voltage (that is factory setting at 220VAC).
Turning the power supply on
Turn the power supply on by pressing the power switch to the ’ON’ Position.
Turning the power supply off
Before you turn the power supply off, turn the radio off as described in the
user documentation for the radio.
Turn the power supply off by pressing the power switch to the ’OFF’ Position
Cooling
The MSR-1231 series power supply is cooled by convection and forced air
cooling (that is, normal airflow around the power supply in combination with a
temperature controlled fan to improve cooling at higher levels of use). The
fan is always activated and the speed is controlled by a sensor. When the
temperature rises, the fan speed increases.
Caution: Place the power supply in a well ventilated and cool area. Do not
block the ventilation openings on the sides, back or top of the unit.
Installation information
Caution: Install the power supply indoors. It is not designed for operation out-
of-doors or in wet environments.
Installation
1. Unplug the power supply from the mains supply outlet.
2. Connect the power cable’s positive (red) wire to the positive terminal and
connect the negative (black) wire to the negative terminal on the back of
the power supply.
3. Plug the power cable into the power socket on the back of the radio.

Electrical specifications
MSR-1231 power supply
Model MSR-1231 Series
Input Voltage 220~240VAC or 100~120VAC Switchable
Input Frequency 50/60Hz
Polarity Grounded Negative
Output Voltage 4~16V (MSR-1231Mx, Dx, Dx+A, Dx+B)，
13.8V (MSR-1231Ax、Bx、Nx)
Continuous (13.8V) 22A
Surge(13,8V) 25A
Ripple & Noise <100mV
Efficiency 80%
Dimension(D*W*H mm) 160 x155 x 44 1U/19” rack mountable
(brackets option)
Net Weight 1.50 kg
Note: Specifications may change without prior notice

Panel Descriptions
Front panels:
MSR-1231Ax (x can be A、B、T) MSR-1231Bx (x can be A、B、T)
MSR-1231Mx (x can be A、B、T) MSR-1231Nx (x can be A、B、T)
MSR-1231Dx (x can be A、B、T)
MSR-1231Dx+A (x can be A、B、T) MSR-1231Dx+A (x can be A、B、T)
1. Power Switch 2. DC Output
3. DC Output Voltage Adjust knob 4. FIX/ADJ button
5. Amp meter 6. Volt meter
Note:
1. The ADJ/FIX button of MSR-1231Dx, Dx+A, Dx+B, Mx, is used for adjust output
voltage from 4~16V (ADJ), or quickly back to default voltage 13.8V (FIX).
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Rear panels:
MSR-1231xA (x can be A、B、D、M、N)
MSR-1231xB (x can be A、B、D、M、N)
MSR-1231xT (x can be A、B、D、M、N)
7. DC Output II 8. AC Input Voltage 115V/230V Selector
9. AC Input Socket
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