Triple Output Programmable
1350
DC Power Supply
User Manual
www.GlobalTestSupply.com
Safety Summary
A WARNING statement calls attention to an operating procedure,
practice, or condition, which, if not followed correctly, could result
in injury or death to personnel.
A CAUTION statement calls attention to an operating procedure,
practice, or condition, which, if not followed correctly, could result
in damage to or destruction of parts or the entire product.
The following safety precautions apply to both operating and
maintenance personnel and must be followed during all phases
of operation, service, and repair of this instrument.
WARNING
Before applying power to this instrument:
z Read and understand the safety and operational informa-
tion in this manual.
z Apply all the listed safety precautions.
z Verify that the voltage selector at the line power cord input
is set to the correct line voltage. Operating the instrument
at an incorrect line voltage will void the warranty.
z Make all connections to the instrument before applying
power.
z Do not operate the instrument in ways not specified by this
manual or by Global Specialties
Electrical Power
This instrument is intended to be powered from a CATEGORY
II mains power environment. The mains power should be 120 V
RMS or 240 V RMS. Use only the power cord supplied with the
instrument and ensure it is appropriate for your country of use.
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Ground the Instrument
WARNING
To minimize shock hazard, the instrument chassis and cabinet
must be connected to an electrical safety ground. This instrument
is grounded through the ground conductor of the supplied,
three-conductor AC line power cable. The power cable must be
plugged into an approved three-conductor electrical outlet. The
power jack and mating plug of the power cable meet IEC safety
standards.
WARNING
Do not alter or defeat the ground connection. Without the safety
ground connection, all accessible conductive parts (including
control knobs) may provide an electric shock. Failure to use a
properly-grounded approved outlet and the recommended threeconductor AC line power cable may result in injury or death.
WARNING
Unless otherwise stated, a ground connection on the instrument’s
front or rear panel is for a reference of potential only and is not to
be used as a safety ground.
Do not operate in an explosive or ammable atmosphere
WARNING
Do not operate the instrument in the presence of ammable
gases or vapors, fumes, or nely divided particulates.
Use only in ofce-type indoor setting
WARNING
The instrument is designed to be used in ofce-type indoor
environments. Do not operate the instrument:
z In the presence of noxious, corrosive, or flammable fumes,
gases, vapors, chemicals, or finely-divided particulates.
z In relative humidity conditions outside the instrument’s
specifications.
z In environments where there is a danger of any liquid being
spilled on the instrument.
z In air temperatures exceeding the specified operating tem-
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peratures.
z In atmospheric pressures outside the specified altitude lim-
its or where the surrounding gas is not air.
z In environments with restricted cooling air flow, even if the
air temperatures are within specifications.
z In direct sunlight.
CAUTION
This instrument is intended to be used in an indoor pollution
degree 2 environment. The operating temperature range is 0 °C
to 40 °C and the operating humidity range is up to 80% relative
humidity with no condensation allowed. Measurements made by
this instrument may be outside specications if the instrument is
used in non-ofce-type environments. Such environments may
include rapid temperature or humidity changes, sunlight, vibration
and/or mechanical shocks, acoustic noise, electrical noise, strong
electric elds, or strong magnetic elds.
Do not operate instrument if damaged
If the instrument is damaged, appears to be damaged, or if
any liquid, chemical, or other material gets on or inside the
instrument, remove the instrument’s power cord, remove the
instrument from service, label it as not to be operated, and return
the instrument to Global Specialties for repair. Notify Global
Specialties of the nature of any contamination of the instrument.
Clean the instrument only as instructed
Do not clean the instrument, its switches, or its terminals with
contact cleaners, abrasives, lubricants, solvents, acids/bases, or
other such chemicals. Clean the instrument only with a clean dry
lint-free cloth or as instructed in this manual.
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Not for critical applications
WARNING
This instrument is not authorized for use in contact with the
human body or for use as a component in a life-support device or
system.
Do not touch live circuits
WARNING
Instrument covers must not be removed by operating personnel.
Component replacement and internal adjustments must be
made by qualied service-trained maintenance personnel who
are aware of the hazards involved when the instrument’s covers
and shields are removed. Under certain conditions, even with
the power cord removed, dangerous voltages may exist when
the covers are removed. To avoid injuries, always disconnect
the power cord from the instrument, disconnect all other
connections (for example, test leads, computer interface cables,
etc.), discharge all circuits, and verify there are no hazardous
voltages present on any conductors by measurements with
a properly-operating voltage-sensing device before touching
any internal parts. Verify the voltage-sensing device is working
properly before and after making the measurements by testing
with known-operating voltage sources and test for both DC and
AC voltages. Do not attempt any service or adjustment unless
another person capable of rendering rst aid and resuscitation is
present. Do not insert any object into an instrument’s ventilation
openings or other openings.
WARNING
Hazardous voltages may be present in unexpected locations in
circuitry being tested when a fault condition in the circuit exists.
Fuse replacement
WARNING
Fuse replacement must be done by qualied service-trained
maintenance personnel who are aware of the instrument’s fuse
requirements and safe replacement procedures. Disconnect the
instrument from the power line before replacing fuses. Replace
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fuses only with new fuses of the fuse types, voltage ratings, and
current ratings specied in this manual or on the back of the
instrument. Failure to do so may damage the instrument, lead to
a safety hazard, or cause a re. Failure to use the specied fuses
will void the warranty.
Servicing
CAUTION
Do not substitute parts that are not approved by Global
Specialties or modify this instrument. Return the instrument to
Global Specialties for service and repair to ensure that safety and
performance features are maintained.
Cooling fans
CAUTION
This instrument contains one or more cooling fans. For
continued safe operation of the instrument, the air inlet and
exhaust openings for these fans must not be blocked nor must
accumulated dust or other debris be allowed to reduce air ow.
Maintain at least 25 mm clearance around the sides of the
instrument that contain air inlet and exhaust ports. If mounted in
a rack, position power devices in the rack above the instrument
to minimize instrument heating while rack mounted. Do not
continue to operate the instrument if you cannot verify the fan is
operating (note some fans may have intermittent duty cycles). Do
not insert any object into the fan’s inlet or outlet.
Use correctly sized wires
WARNING
To connect a load to the power supply, use a wire diameter large
enough to handle the maximum continuous output short-circuit
current of the power supply without the wire overheating.
For continued safe use of the instrument
z Do not place heavy objects on the instrument.
z Do not obstruct cooling air flow to the instrument.
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z Do not place a hot soldering iron on the instrument.
z Do not pull the instrument with the power cord, connected
probe, or connected test lead.
z Do not move the instrument when a probe is connected
Compliance
Compliance Statements
Disposal of Old Electrical & Electronic Equipment
(Applicable in the European Union and other European countries
with separate collection systems). This product is subject to
Directive 2002/96/EC of the European Parliament and the
Council of the European Union on waste
electrical and electronic equipment (WEEE),
and in jurisdictions adopting that Directive, is
marked as being put on the market after
August 13, 2005, and should not be disposed
of as unsorted municipal waste. Please utilize
your local WEEE collection facilities in the
disposition of this product and otherwise
observe all applicable requirements.
The 1350 is CE and LVD compliant.
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Table of Contents Page
1 General Information ................................................8
1. Product Overview .......................................................................8
2. Features ....................................................................................8
3. Constant Voltage (CV) /Constant Current (CC) Mode .....................8
4. Package Contents .......................................................................9
5. Front Panel Overview ................................................................10
6. Rear Panel Overview .................................................................12
2 Getting Started .......................................................12
1. Input Power and Fuse Requirements..........................................12
2. Fuse Requirements ...................................................................13
3. Line Voltage Selection ...............................................................13
4. Ventilation ...............................................................................15
3 Operating the Power Supply ..................................15
1. Settings Voltage & Current ........................................................15
2. Output Button ..........................................................................15
3. Independent Mode ..................................................................15
4. Serial Mode ..............................................................................15
5. Fixed 5V / 3A Output ...............................................................16
6. Savings Settings .......................................................................16
7. Recalling Settings .....................................................................16
8. List Mode .................................................................................16
9. USB Input ................................................................................18
4 Maintenance ...........................................................19
1. Preventive Maintenance ............................................................19
2. Servicing .................................................................................19
5 Specications .........................................................19
6 Service and Warranty Information ........................21
1. Warranty .................................................................................21
2. Calibration and Repair ..............................................................21
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1 General Information
1. Product Overview
The 1350 programmable DC power supply features triple outputs,
two variable and one xed. The two variable outputs can be
congured in series mode for up to 64 V output. The front panel
keys provide a convenient means for setting values and adjusting
parameters. Built-in memory supports storing and recalling user
settings without the need to connect to an external PC. List Mode
enables automatic operation of those stored settings. For remote
controllability from a PC, there is a USB interface.
2. Features
z Three independent and electrically isolated outputs
z Separate 4-digit displays for voltage and current for both
variable outputs (4 displays)
z 9 memory locations for instrument state storage & recall
z List Mode runs through all 9 memory locations
z High resolution: 10 mV and 1 mA
z High stability with less drift
z OVP and OCP protection on the variable outputs
z Overload protection on the fixed output
z Self-test with the displaying of error messages
z USB interface for PC remote operation
z Serial mode for 64 V operation
z Switchable AC input 120 or 240 V
3. Constant Voltage (CV) /Constant Current (CC) Mode
The working characteristic of this power supply is called a
constant voltage/constant current automatic crossover type. This
permits continuous transition from constant current to constant
voltage modes in response to the load change. The intersection
of constant voltage and constant current modes is called the
crossover point. Figure 1 shows the relationship between this
crossover point and the load.
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For example, if the load is such that the power supply is
operating in the constant voltage mode, a regulated output
voltage is provided. The output voltage remains constant as the
load increases, up until the point where the preset current limit is
reached. At that point, the output current becomes constant and
the output voltage drops in proportion to further increases in load.
The crossover point is indicated by the front panel LED
indicators. The crossover
point is reached when the CV
indicator goes off and the CC
indicator comes on. Similarly,
crossover from the constant
current to the constant voltage
mode automatically occurs
from a decrease in load.
Figure 1. CC/CV Characteristics
4. Package Contents
Please inspect the instrument mechanically and electrically
upon receiving it. Unpack all items from the shipping carton,
and check for any obvious signs of physical damage that may
have occurred during transportation. Report any damage to the
shipping agent immediately. Save the original packing carton for
possible future reshipment. The package includes the following:
z 1350 Power Supply
z AC Power Cord
z User Manual
z Banana Plug to Alligator Clip Lead Wires (Black & Red)
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5. Front Panel Overview
Figure 2. Front Panel
Front Panel Description
1. Power button: Power on or off.
2. Voltage display: Indicates the setting voltage of CH1 and CH2 or the testing
voltage value.
3. Current display: Indicates the setting current of CH1 and CH2 or the testing
current value.
4. Memory Display: Indicates the present data location number in memory or in
List Mode it displays the current step.
5. Status Display: Indicates the operational status.
6. – Output BNC (CH2): Negative output terminal.
7. + Output BNC (CH1): Positive output terminal.
8. COM BNC connector: Output reference terminal.
9. GND BNC connector: Ground terminal.
10. USB Input terminal.
11. CH1V: Enter CH1 Voltage mode.
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12. CH1A: Enter CH1 Current mode.
13. CH2V: Enter CH2 Voltage mode.
14. CH2A: Enter CH2 Current mode.
15. 0-9: Data input.
16. “ . ” : Decimal.
17. “
18. Serial button: Push this button to enter Serial Mode and light the LED. Push
19. OUTPUT button: Push to turn on the output. The LED will come on. Push again
20. SHIFT button: Push this button to access secondary functions.
21.
22.
23.
24.
25. Fixed 5V /3A output: Standard 5V / 3A power output.
26. Over Load indicator.
”: Enter.
again and the instrument will go back to Independent Mode.
to turn off.
(Auto): Push this key to increase the setting value, or push SHIFT-Auto
enter List Mode.
(Delay): Push this key to decrease the setting value, or push SHIFT-Delay
to enter delay times.
(Store): Push this key to shift the digit to the left, or push SHIFT-Store to
save the current settings.
(Recall):Push this key to shift the digit to the right, or push SHIFT-Recall
to see saved settings.
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6. Rear Panel Overview
Figure 3. Image3313.JPG
Rear Panel Description
27. Heat sink: Heat dissipation for power transistor.
28. Ventilation fan: 8” 24 V DC fan.
29. Power input socket
30. The input power voltage indicator: The
voltage
31. Fuse holder and input voltage selector: The selected input voltage is set to the
voltage shown near the
mark which points to the set input line voltage
mark points to the set input line
2 Getting Started
1. Input Power and Fuse Requirements
The supply has a selectable AC input that accepts line voltage
input within:
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z Voltage: 115 V or 1230 V (±10%)
z Frequency: 47 Hz – 63 Hz
Before connecting to an AC outlet or external power source, be
sure that the power switch is in the OFF position and verify that
the AC power cord, including the extension line, is compatible
with the rated voltage/current and that there is sufcient circuit
capacity for the power supply. Once veried, connect the cable
rmly.
WARNING
The included AC power cord is safety certied for this instrument
operating in rated range. To change a cable or add an extension
cable, be sure that it can meet the required power ratings for this
instrument. Any misuse with wrong or unsafe cables will void the
warranty.
WARNING
The power cord provides a chassis ground through a third
conductor. Verify that your power outlet is of the three-conductor
type with the correct pin connected to earth ground.
2. Fuse Requirements
An AC input fuse is necessary when powering the instrument.
The below table shows the fuse required for all models operating
with either 120 VAC or 240 VAC input.
Selector Line Voltage Fuse
120 V 114 – 126 V, 50/60 Hz 6 A, 250 V
240 V 228 – 252 V, 50/60 Hz 3 A, 250 V
3. Line Voltage Selection
The power supplies can be selected to operate with 110 V
input or 220 V input. To ensure that your instrument is properly
congured to operate at the desired AC line voltage, please
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follow the steps below:
WARNING
For safety, no power should be applied to the instrument while
changing line voltage operation. Disconnect all cables connected
to the instrument before proceeding.
a. Check and/or Change Fuse
z Locate the fuse box next to the AC input connector in the
rear panel (see Figure 3).
z With a small flat blade screwdriver, insert into the fuse box
slit to pull and slide out the fuse box as indicated below.
z Check and replace fuse (if necessary) for the desired line
voltage operation (see section 2.2).
b. Check and/or Change Line Voltage Switch
The input power voltage indicator is a black arrow
on the rear
panel near the AC input connector. See Figure 3, number 30.
The fuse holder (Figure 3, number 31) has a both a smaller white
arrow
(120 V) and a smaller black arrow (240 V) on it. The
fuse holder should be rotated so that the fuse holder arrow of
the appropriate voltage is pointing to the larger black input power
voltage indicator arrow. See Figure 4.
240 V Setup 120 V Setup
240 V 120 V
240 V
Figure 4. Fuse Selector
120 V
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CAUTION
Do not connect power to the instrument until the line voltage
selection is setup correctly. Applying an incorrect line voltage or
conguring the line voltage selection improperly may damage the
instrument and void all warranty.
4. Ventilation
CAUTION
Also make sure the ventilation holes are not blocked. Ensure the
ventilation fan is working well (it should turn on at power-on). Do
not load the output if fan is not working otherwise it may cause
overheating.
3 Operating the Power Supply
1. Settings Voltage & Current
To set the voltage, push the CH1/V or CH2/V button, key in the
voltage, and then press Enter. To set the current, push the CH1/A
or CH2/A button, key in the current, and then press Enter.
2. Output Button
Pressing the OUTPUT button will light up the LED and begin to
output power to your load. To stop sending power to your load,
press the OUTPUT button again. The LED will turn off.
3. Independent Mode
Connect the appropriate load between the positive (red) and
common (yellow) terminal of Output 1 for 0 to +32 V. Connect the
common (yellow) and negative (black) terminal of Output 2 for 0
to -32 V.
4. Serial Mode
Push the “Serial” button. The LED will light up to show you are
now in Serial Mode. The output of CH2 will be automatically
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changed to the same as CH1. Connect the appropriate load
between the positive (red) and negative (black) terminal for 0 to
64 V output.
5. Fixed 5V / 3A Output
This is a standard 5 V/ 3 A output useful for supplying power
to TTL logic circuits. When the load attempts to draw more
than 3 amps from the output, the OVERLOAD indicator will
light and the power supply will fold back, reducing both the
output voltage and current to well below the normal operating
limits.
6. Savings Settings
There are 10 locations of internal memory. To save the settings,
push SHIFT-Store. Then key in the number of the storage
location, and Enter. For example, to store the current settings
in memory Location #5, push SHIFT-Store-5-Enter. The data of
both CH1 V & A and CH2 V & A will be stored in Location #5.
The location numbers are 0-9. The “0” location is an out-of-list
location. This means you can use this location to save and recall
settings, but it will be excluded when operating in List Mode.
Location #9 will only be used for timing while in List Mode.
7. Recalling Settings
To recall the saved settings, push SHIFT-Recall key in the
number of the memory location (0-9), and hit Enter. The data
will be shown on the displays. For example, to recall the stored
settings from Location #4, push SHIFT-Recall-4-Enter. The data
will be shown on the displays.
8. List Mode
The 1350 features List Mode allowing you to run the supply
through a preset list of settings. In List Mode the supply will
automatically execute the settings in order starting rst with your
current settings, then from Locations #1 - #8.
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a. Delay
Each location has a delay time which is the length of delay
(in seconds) before that location’s settings are activated. For
instance, a delay time of 9 seconds in Location #2 will mean that
9 seconds will pass before Location #2 will be activated. To set
the delay time, rst Recall (see section 3.7) the location you wish
edit. Now push SHIFT-Delay-Time-Enter. Lastly, SHIFT-StoreEnter.
For example, say you wish to set the delay time for Location #3
to 45 seconds. First, call up location 3: SHIFT-Recall-3-enter.
Now set the time: SHIFT-delay-45-enter. Now save it: SHIFTStore-enter.
b. Running the List
To execute List Mode push SHIFT-Auto. The displays will
ash while running through the list. Step “1” will now show in
the MEMORY display. Step 1 activates the settings that were
showing on the displays when List Mode was activated. After the
time delay set in Location #1, the output will switch to Location
#1 settings. These will remain for the length of the Location #2
time delay, and so forth. See Figure 6 below. To interrupt the list
in process, just push “SHIFT” again. The display should stop
ashing and List Mode will be discontinued.
Location 1
Location 2
Location 3
Location 4
Location 5
Location 6
Location 7
Location 8
Location 9
Figure 5. List Mode
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9. USB Input
1. Download the 1350 software from our website at globalspecialties.com.
2. Install the appropriate driver. Now connect the 1350 to
the computer via USB.
3. Install the application “1350.exe” software on your
computer. The setup program will guide the program
installation. The 1350 is compatible with Windows 98,
Windows ME, Windows XP, and Windows 7.
4. Open the 1350 Program. The program will conrm the
COM port. Say “No” to COM 1. The program should
now offer the correct COM Port. If you are uncertain
which COM port is being used, see the Device Manager.
5. The power supply will enter the PC Mode and will be
controlled by the computer only. The output will be according to the command from the computer. After you
have set the data, push “Enter” key to execute.
6. The output is set to “Off” as in Figure 4. Click the On/Off
to start output as in Figure 5. Clicking it again will return
to “Off” position.
7. Serial mode is “Off” by default. Click it to enter Serial
Mode. The data of CH1 will be copied to CH2 automatically. Click it again to return to Normal mode.
8. Auto Mode. Click: “Auto” of Fig.6. The computer will
display Fig.7. Set the delay time ( in second). CH1V / A
and CH2 V / A etc. for each memory step. Total 9 steps.
9. After you have set the data click “Start.” The output will
execute from Step 1 to step 9 automatically.
10. After all nine steps have been executed the computer
will display “Finish”.
11. If you desire to return to front panel control, switch off
the power supply and disconnect the USB lead. Then
switch on the power supply again.
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4 Maintenance
1. Preventive Maintenance
Clean and recalibrate the instrument in a regular basis to keep
the instrument looking nice and working well. Remove any dirt,
dust and grime whenever they become noticeable on the outside
cover with a soft cloth moistened with a mild cleaning solution.
2. Servicing
If the instrument ever becomes inoperative or damaged, refer
servicing to a qualied repair facility.
5 Specications
All specications apply to the unit after a temperature stabilization time of 15 minutes over an
ambient temperature range of 25 ºC ±5 ºC.
1350 Power Supply
Output Parameters
Max Output Power 207 W
Number of Outputs 3 electrically isolated outputs
Range Variable: 0-30 VDC / 0-3 A (2)
Load Regulation
CC Mode ≤ ±10 mA
CV Mode ≤ ±20 mV
Line Regulation
CC Mode ≤ ±10 mA
CV Mode ≤ ±20 mV
Ripple & Noise
CC Mode ≤ 3mArms
CV Mode Ripple ≤ 1mVrms / 3mVp-p
Fixed 5 V Output ≤ 2mVrms
Tracking Operation
Slave Tracking Error ≤ 0.1% + 50mV
Display
Resolution 10 mV, 1 mA
Fixed: 5 V / 3 A (1)
Noise ≤ 2mVrms / 6mVp-p
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Voltage & Current Accuracy ≤ 0.5% ± 10 mV, ≤ 0.5% ± 1 mA
Fixed 5 V Output Accuracy 5 V ± 0.25 V, 3 A ± 0.02 A
General
Response Time: Voltage Up 10 to 90% ≤ 100mS
Response Time: Voltage Down 90 to 10% ≤ 100mS
Read Back Temperature: Voltage ≤ 100ppm ± 20mV
Read Back Temperature: Coefcient ≤ 150ppm ± 10mA
Drift: Voltage ≤ 100ppm ± 20mV
Drift: Current ≤ 150ppm ± 10mA
Memory 9 locations
Step Time 1 sec to 999999 sec
Timer Resolution 1 sec
AC Input VAC 120/240 ±5%, 50/60Hz
Operating Temperature 50 ºF to 104 ºF (10 ºC to 40 ºC)
Operating Humidity 90% R.H.
Temperature Coefcient ≤ 100ppm + 20 mV, ≤ 150ppm + 10 mA
Dimensions (W x H x D) 9 x 7 x 12 in (230 x 170 x 310 mm)
Weight 17.6 lbs (8.0 kg)
Included Accessories Power cord, user manual, one pair of test
Warranty One Year Warranty
Specications are subject to change without notice. To ensure the most current version of this
manual, please download the current version from our website: globalspecialties.com.
leads
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6 Service and Warranty Information
1. Warranty
Cal Test Electronics warrants this product to be free from
defective material or workmanship for a period of 1 year from
the date of original purchase. Under this warranty, Cal Test
Electronics is limited to repairing the defective device when
returned to the factory, shipping charges prepaid, within the
warranty period.
Units returned to Cal Test Electronics that have been subject to
abuse, misuse, damage or accident, or have been connected,
installed or adjusted contrary to the instructions furnished by Cal
Test Electronics, or that have been repaired by unauthorized
persons, will not be covered by this warranty.
Cal Test Electronics reserves the right to discontinue models,
change specications, price, or design of this device at any time
without notice and without incurring any obligation whatsoever.
The purchaser agrees to assume all liabilities for any damages
and/or bodily injury which may result from the use or misuse of
this device by the purchaser, his employees, or agents.
This warranty is in lieu of all other representations or warranties
expressed or implied and no agent or representative of Cal
Test Electronics is authorized to assume any other obligation in
connection with the sale and purchase of this device.
2. Calibration and Repair
If you have a need for any calibration or repair services, please
visit us on the web at: globalspecialties.com. See the “Service”
tab. Or contact us via the “Contact” tab. You may also contact us
at:
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