UTP3000C Series Programmable DC Power Suppliesare high precision 4-bit
display devices with 3-way output. It is built with voltage and current overload
protection, convenient operation panel,and one key storage recall. It can be used in
aging test, electronics circuit behavior test, and automated system test of different
environments. This device is suitable to use in education fields such as special trade
schools, universities, colleges, and research labs.
Main Features
• Precise 4-bit voltage & current display
• Settable voltage & current overload protection
• 5 sets of storage recall
• Power-off memory
• Software calibration
• Keyboard lock
• Low operation noise
• Out-of-range temperature protection
• USB and RS232 interface
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Function
UTP3000C Series User Manual
1. Voltage and Current Settings and Output
1. Press , the displayed voltage of CH1 flashes, during which turn voltage
adjustment knob to set the value; Press again to switch from voltage
to current, during which turn current adjustment knob to set the value; keep
pressingto switch between voltage and current. When the displayed voltage or
current is flashing, press the voltage or current knobto adjust resolution.
2. After setting the voltage and current values, press to output them.The
ON light will also be on; Press again to stop the output and ON light will
be out.
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2. Series and Parallel Settings
1. Series settings:
Press for 3s to enter into series mode and SER light will be on. Then
CH1 operation is shielded, and CH2 will actas the main control; Press
to enable/disable output.The connection method of series terminal is as below,
2. Parallel Operations:
Press for 3s to enter into parallel mode and PARA light will be on.
Then CH1 operation is shielded, and CH2 will act as the main control;
Press to enable/disable output. The connection method of parallel
terminal is as below,
UTP3000C Series User Manual
3. Recall and Output
No matter under what condition, you can have storage valuesrecalled by pressing
any key from M1 to M5.
4. Over Current Protection Setting
Press for 3s to enter into Over Current Protection (OCP) setting and OCP
SET light willflash; Press CH1/2 to select the channel, and turn the current knob to
adjust value; Press again for 3s, the device exists setting and OCP SET light
will beoff; Then the set current value will bedisplayed.
Short press to turn on OCPand OCP light will be on. Whencurrent is larger
than the value set in OCP, output willbe disabled; Press again to turn off
OCP.
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UTP3000C Series User Manual
5. Over Voltage Protection Setting
Press for 3s to enter into Over Voltage Protection (OVP) setting and OVP
SET light willflash; Press CH1/2 to select the channel, and turn voltage adjustment
knob to adjust value; Press again for 3s, the device exists setting and OVP
light will be off. Then the setvoltagevalue will bedisplayed.
Short press to turn on OVPandOVP light will be on. When voltage is larger
than the value set in OVP, output will be disabled. Press again to turn off
OVP.
6. Key Lock
After pressing the voltage knob for 3s, keys are locked; press it again for 3s, keys
are unlocked.
7. Turning on/off Buzzer
After pressing the current knob for 3s, the buzzer will be turned off; Press it again
for 3s, the buzzer will be turned on again.
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Remote Control
COM setting: set computer COM portsetting as below:
• Baud Rate: 9600
• Calibration Bit: None
• Data Bit: 8
• Stop Bit: 1
RS232 Interface Definition
UTP3000C Series User Manual
Communication protocol V2.0
Order Format: VSET<X>:<NR2>
1. VSET: Order Parameter
2. X: Channel
3. :Separator
4. NR2: Parameter
Order Description:
1. LOCK<NR2>
Function Description:Lock power supply operation panel
Example: LOCK1
Lock power supply operation panel
Example:LOCK0
Unlock power supply operation panel
2. ISET<X>: <NR2>
Function Description: Set current value
Example: ISET1:2.225
Set current value as 2.225A
3. ISET<X>?
Function Description: Read the set current value
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UTP3000C Series User Manual
Example: ISET1?
Returnset current value
4. VSET<X> : <NR2>
Function Description: Set voltage value
Example: VSET1:20.50
Set voltage value as 20.50V
5. VSET<X>?
Function Description: Read voltage value
Example: VSET1?
Return set voltage value
6. IOUT<X>?
Function Description: Read current output value
Example: IOUT1?
Read the set current value
7. VOUT<X>
Function Description: Read voltage output value
Example: VOUT1?
Read the set voltage value
8. OUT<Boolean>
Function Description: Turn on/off power supply output
Boolean: 0 off; 1 on
Example: OUT1 Turn on power supply output
9. BEEP<Boolean>
Function Description: Turn on/off buzzer
Example: BEEP1 Turn on buzzer
10. STATUS?
Function Description: Read power supply output status
Contents 8 bits in the following format
Bit Item Description
0 CH1 0=CC mode, 1=CV mode
1 CH2 0=CC mode, 1=CV mode
2,3,4,5 N/A
6 Output 0=Off, 1=On
7 N/A N/A
11. *IDN?
Function Description: Return to device model & factory information
Example: *IDN?
Contents UNI-T P33XC V2.0 (manufacturer, model name)
12. RCL<NR1>
Function Description:Storage recall by pressing keys from M1-M5
13. SAV<NR1>
Function Description: Storage setting
Example: SAV1 Stores the panel setting in memory number 1
14. TRACK<NR1>
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Function Description: Set series & parallel output