GW INSTEK PART NO. ISO-9001 CERTIFIED MANUFACTURER USER MANUAL GPD-3303 Series DC Power Supply Good Will Instrument Co., Ltd. No. 7-1, Jhongsing Rd., Tucheng City, Taipei County 236, Taiwan. The information in this manual was correct at the time of printing. However, Good Will continues to improve products and reserves the rights to change specification, equipment, and maintenance procedures at any time without notice. This manual contains proprietary information, which is protected by copyrights.
6H 25H 24H 23H 3 REMOTE CONTROL ....................................................... 3 6 Remote Control Setup .......................... 3 6 Remote Connection Step...................... 3 7 Command Syntax ................................. 3 8 2H 21H 20H SAVE/RECALL SETUP ..................................................... 3 4 Save Setup ........................................... 3 4 Recall Setup ......................................... 3 5 19H OPERATION ...................................
CAUTION WARNING Do not block or obstruct the cooling fan vent opening. Do not perform measurement at circuits directly connected to Mains (see note below). • • Earth (ground) Terminal Protective Conductor Terminal Attention Refer to the Manual 6 Fuse WARNING WARNING • • • • Make sure the correct type of fuse is installed before power up. Fuse type: 100V/120V: T6.3A/250V, 220V/230V: T3.
Disconnect the power cord before fuse replacement. Make sure the cause of fuse blowout is fixed before fuse replacement. • • Operation Environment Relative Humidity: < 80% Altitude: < 2000m Temperature: 0°C to 40°C • • • 7 • Pollution degree 3: Conductive pollution occurs, or dry, nonconductive pollution occurs which becomes conductive due to condensation which is expected.
GPD-3303, the regulated DC power supply series, are light weight, adjustable, multifunctional work stations. They have three independent outputs: two with adjustable voltage level and one with fixed level selectable from 2.5V, 3.3V and 5V. The GPD-3303 series can be used for logic circuits where various output voltage or current are needed, and for tracking mode definition systems where plus and minus voltages with insignificant error are required.
Interface Protection Operation Performance Main Features 5 digit GPD-3303S 4 sets of panel setup save/recall Coarse and fine Voltage/Current control Software calibration Buzzer output Key lock function • • • • • • USB for remote control 11 Digital panel control • Reverse polarity protection 3 outputs: 30V/3A x 2, 2.5V/3.
The main rectifier is a full wave bridge rectifier. It provides the power after the rectifier is filtered by the capacitor C101, and then regulated via a serieswound regulator, which is finally delivered to the output terminal. U104 acts as a current limiter. When the current is over predetermined rating, U104 is activated and decreases the current. U208 provides a reference voltage. U206 is the inverter amplifier.
Locks or unlocks the front panel settings. For details, see page22. Turns the output on or off. Adjusts the output voltage level for CH1 or CH2. Pressing the knob switches coarse and fine level setting. Adjusts the output current level for CH1 or CH2. Pressing the knob switches coarse and fine level setting. Turns On or Off the main power. For power up sequence, see page19.
AC Selector 17 Selects AC voltage: 100V/ 120V/ 220V/ 230V. The fuse holder contains the AC main fuse. For fuse replacement details, see page46. The power cord socket accepts the AC mains: 115V/230V, 50/60Hz. For power up details, see page19. Power Cord / Fuse Socket Power Cord / Fuse Socket AC Selector Accepts a USB slave connector for command-based remote control (page36).
19 20 4 6 10 16 18 16 14 12 Press the Power switch again to turn off the power. 2.5 20 Power Off Maximum current (A) When using load cables other than the attached, make sure they have enough current capacity for minimizing cable loss and load line impedance. Voltage drop across a wire should not excess 0.5V. The following list is the wire current rating at 450A/cm2. Wire type Press the Power switch to turn on the power.
The key LED also turns on. Pressing the Output key again turns the output and the key LED off. Pressing the Output key turns on all CH 1/2/3 outputs.
0 ~ 30V/0~3A for each channel 1. Make sure the PARA/ INDEP and SER/INDEP keys are turned off (the key LEDs are off). Output rating Panel operation 23 2. Connect the load to the front panel terminals, CH1 +/−, CH2 +/−. CH1 and CH2 outputs work independent of each other. Background / Connection CH1/CH2 Independent Mode OPERATION OPERATION 24 Fine: the smallest digit @ rotation click • (CH2) 5. To turn on the output, press the output key.
CH3 does not have tracking series/parallel mode. Also, CH3 output is not affected by CH1 and CH2 modes. 1. Connect the load to the front panel CH3 +/− terminal. (the diagram shows nonEuropean terminals) No Tracking Series/Parallel Panel operation 25 2.5V/3.3V/5V, 3A fixed Output rating 2. Select the output voltage, 2.5V/3.3V/5V using the CH3 voltage selector key. The CH3 rating is 2.5V/3.3V/5V, 3A fixed. It works independently from CH1 and CH2, regardless of their modes.
Output rating Connection 1. Press the SER/INDEP key to activate the tracking series mode. The key LED turns on. 0 ~ 60V/0 ~ 3A 27 The following describes two type of configurations depending on the common ground usage. Tracking series operation doubles the Voltage capacity of the GPD-3303 series by internally connecting CH1 (Master) and CH2 (Slave) in serial and combining the output to a single channel. CH1 (Master) controls the combined Voltage output level.
Output rating Connection 0~–30V/0~3A for CH2 ~ COM 0~30V/0~3A for CH1 ~ COM 29 CH1 meter reading shows the output Current. In the above case, 2.000A. (CH2 Current control must be in the Maximum position=3.0A). Current level Tracking series with common terminal Double the reading on the CH1 Voltage meter. In the above case, the actual output is 20.0 x 2 = 40.0V. Voltage level OPERATION 30 Fine: the smallest digit @ rotation click • 5. To turn on the output (and LED), press the output key. 4.
CH1 meter reading shows the output current. In the above case, 2.000A. Master (CH1) current level The CH2 meter reading shows the output current. In the above case, 3.000A. Slave (CH2) current level 31 The CH2 meter reading shows the output voltage. In the above case, 20.0V. Slave (CH2) voltage level 8. For the slave (CH2) output level and CV/CC status, refer to the CH1/CH2 meter and CH2 indicator. 7. Press the CH2 key (LED turns on) and use the Current knob to set the slave output current.
Double the amount of CH1 current meter reading. In the above case, 2.0A x 2 = 4.0A. Current level 33 The CH1 meter reading shows the output voltage. In the above case, 20.0V. Voltage level 6. For the output level and CV/CC status, refer to the CH1 meter and indicator. 5. Press the CH1 key (LED turns on) and then use the Voltage and Current knob to set the output voltage and current. The CH2 output control is disabled. By default, the Voltage and (Fine control) Current knob work in the coarse mode.
CH1/CH2 knob selection Fine/coarse editing mode Output voltage/current level • • • Press one of the 1~4 Memory keys, for example memory 1. The panel settings saved in memory 1 are recalled. The key LED turns on. When the panel settings are modified, the LED turns off. When a setting is recalled, the output automatically turns off. Note Front panel lock/unlock • Panel operation Output on/off • 35 The following settings are always recalled as “off”.
Leaving the remote control mode Entering the remote control mode 4. The power supply goes back to the local operation mode. 37 3. Unlock the power supply by keep pressing the Lock key until it turns off. 2. The display shows “USB…NO” message. 1. Disconnect the USB cable from the rear. 3. The power supply also automatically enters the lock state (the Lock key will become activated). 2. The connection will be automatically established, and the front panel shows “USB…YES” message. 1.
Response time Example Sets the output voltage. Returns the output voltage setting. Returns the actual output current. Returns the actual output voltage. Selects the operation mode. Turn on or off the beep. Turn on or off the output. Returns the GPS-3303D or GPS-3303S status. Returns the GPS-3303D or GPD-3303S identification. Recalls a panel setting. Saves the panel setting. Shows the command list. Returns the instrument error messages.
IOUT1? Example Minimum 80ms VOUT1? Response time Example See page27 0: Independent 1: Tracking series 2: Tracking parallel Minimum 70ms TRACK0 Panel operation NR1 Response time Example 41 Selects the independent mode Selects the operation mode: independent, tracking series, or tracking parallel. Description TRACK See page23 Panel operation Returns the CH1 output voltage Returns the actual output voltage.
GW INSTEK,GPD-3303x,SN: xxxxxxxx, Vx.xx Contents Minimum 70ms RCL1 Response time Example 1 – 4: Memory 1 to 4 Minimum 70ms SAV1 NR1 Response time Example Shows the command list. Minimum 1000ms Description Response time HELP? See page34 Panel operation Stores the panel setting in memory 1 Stores the panel setting.
For more information, contact your local dealer or GWInstek at www.gwinstek.com.tw / marketing@goodwill.com.tw. 45 A4. The output is always stored or recalled as “off” to ensure safety. Q4. The internal memory is not recording the panel setting correctly – the output should be on. A3. Make sure that the power supply is powered on for at least 30 minutes, within +20°C – +30°C. Q3. The specifications does not match the real accuracies. A2.
Specifications 0 ~ 30V / 0 ~ 6A 0 ~ 60V / 0 ~ 3A 0 ~ 30V / 0 ~ 3A 2.5V/3.3V/5.0V, 3A ≤ 0.01% + 3mV ≤ 0.01% + 3mV (rating current ≤ 3A) ≤ 0.02% + 5mV (rating current > 3A) Ripple & Noise ≤ 1mVrms (5Hz ~ 1MHz) Recovery Time ≤ 100μs (50% load change, minimum load 0.5A) Temperature ≤ 300ppm/°C Coefficient Line ≤ 0.2% + 3mA CH1/CH2 Independent CH1/CH2 Series CH1/CH2 Parallel CH3 Line Load 47 Load ≤ 0.
Declaration of Conformity Safety Requirements IEC/EN 61010-1: 2001 Low Voltage Equipment Directive 73/23/EEC, 93/68/EEC Electrostatic Discharge ClassA EN 61000-4-2: 1995 + A1:1998 + A2:2001 EN 55011: 1998 + A1:1999 + Radiated Immunity A2:2002 EN 61000-4-3: 2002 + A1:2002 Current Harmonics Electrical Fast Transients EN 61000-3-2: 2000 + A2:2005 EN 61000-4-4: 2004 Voltage Fluctuations Surge Immunity EN 61000-3-3: 1995 + A1:2001 EN 61000-4-5: 1995 + A1:2001 ------------------------Conducted Susceptibility E
overload indicator ................26 power supply safety instruction ................6 setup ...................................19 socket overview ................17 specification.......................48 protective ground symbol .....5 rear panel overview .............17 recall settings manual ...............................35 remote ................................43 remote control command syntax ..............38 connection test ..................36 error messages ..................38 51 interface.....
