GPS-3303X / GPS-3303DPX
GPS-3303X and GPS-3303DPX Programmable DC Power Supplies
220 W · 2 × 0–32 V at 0–3.2 A · 1 mV or 10 mV resolution
Two supplies that differ in one thing: how finely they set and read back. Both give 220 W across three isolated channels with a 4.3 inch display that plots as well as reads, panel timing, and USB and LAN answering SCPI. The GPS-3303X resolves ten times finer than the GPS-3303DPX.
Two models, one difference
Everything below the resolution line is common to both. The GPS-3303X sets and reads ten times finer, and that is the whole of the choice.
| Item | GPS-3303X | GPS-3303DPX | Notes |
|---|---|---|---|
| CH1 and CH2 | 0 to 32 V, 0 to 3.2 A | 0 to 32 V, 0 to 3.2 A | Each, isolated |
| CH3 | 2.5, 3.3 or 5 V at 3.2 A | 2.5, 3.3 or 5 V at 3.2 A | Panel selected, ± 8% |
| Series | 0 to 60 V | 0 to 60 V | Not twice 32 |
| Parallel | 0 to 6.4 A | 0 to 6.4 A | At up to 32 V |
| Resolution | 1 mV and 1 mA | 10 mV and 10 mA | |
| Accuracy, voltage | ±(0.03% of reading + 10 mV) | ±(0.5% of reading + 2 digits) | Setting and readback |
| Accuracy, current | ±(0.3% of reading + 10 mA) | ±(0.5% of reading + 2 digits) | Setting and readback |
| Display digits | 5 voltage, 4 current | 4 voltage, 3 current | 4.3 inch colour TFT on both |
In series and in parallel the channels are linked internally and CH1 sets the pair. Series is limited to 60 V, which is less than twice a single channel.
What the display gives you
A display that plots
Not just numbers
Output is drawn against time on the 4.3 inch screen as it runs, so a droop under load or a step at switch-on is seen rather than inferred from a reading that moved while you were not looking.
Panel timing
Programmed output, no PC
Five timing profiles are stored and stepped through from the front panel. A repeatable power-up sequence becomes a button press rather than a procedure someone has to follow correctly.
Five stored setups
Recalled in one action
Each memory holds the operating mode as well as the voltage and current, and the internal store can be extended externally.
Fine and coarse
A knob, arrows and a Fine key
Arrow keys pick the digit, the knob changes it, and Fine drops to the smallest step the model offers: 1 mV and 1 mA on the GPS-3303X.
A switchable logic rail
2.5 V, 3.3 V or 5 V at 3.2 A
The third output is not fixed at 5 V. A switch selects the rail, so 3.3 V logic is available without a regulator on the bench. Tolerance is ± 8%.
Quiet when it can be
Temperature-controlled fan
The fan follows the heatsink rather than running flat out, so a lightly loaded supply is a quiet one. That matters more on a teaching bench than anywhere.
In an automated rack
USB and LAN are both fitted as standard, and the instrument answers SCPI, so it can be driven and interrogated by a test script rather than by hand.
USB and LAN, both fitted
Not one or the other
A USB device port and an Ethernet port as standard, so the instrument can sit on a bench tethered to a laptop or in a rack on the network.
SCPI command set
Set, measure, switch, and change mode
Select a channel, set or query voltage and current, read back what is being delivered, switch outputs, and move between independent, series and parallel, all remotely.
Software and drivers
Including LabVIEW
Control software and a LabVIEW driver are available, so the supply drops into an existing test framework rather than needing one built around it.
Regulation and accuracy
| Constant voltage, line and load regulation | ≤ 0.01% + 3 mV |
|---|---|
| Constant voltage, ripple and noise | ≤ 1 mV rms, 5 Hz to 1 MHz |
| Constant current, line and load regulation | ≤ 0.2% + 3 mA |
| Constant current, ripple and noise | ≤ 3 mA rms |
| Recovery time | < 50 µs for a fifty per cent load change, minimum load 0.5 A |
| Series mode | Line ≤ 0.01% + 5 mV · load ≤ 300 mV |
| Parallel mode | Line and load ≤ 0.01% + 3 mV |
| CH3 | Line and load ≤ 0.01% + 3 mV · ripple ≤ 1 mV rms |
Figures apply after about thirty minutes of warm-up at an ambient temperature between 20 °C and 30 °C.
Technical specifications
| Outputs | Three isolated channels · two adjustable 0 to 32 V at 0 to 3.2 A · one selectable 2.5, 3.3 or 5 V at 3.2 A |
|---|---|
| Total power | 220 W |
| Output modes | Independent, series or parallel · each channel switches on and off separately, or all together |
| Display | 4.3 inch true colour TFT, 480 × 272 · five-digit voltage and four-digit current on the GPS-3303X, four and three on the GPS-3303DPX |
| Protection | Output short circuit and overload protection · key lock against accidental adjustment |
| Memory | Five setups internally, with external storage for more |
| Interfaces | USB device and LAN, both fitted · SCPI command set |
| Insulation | Case to terminal ≥ 20 MΩ · case to mains ≥ 30 MΩ, both at 500 V DC |
| Mains input | 100 V, 120 V, 220 V or 230 V ± 10%, 50/60 Hz |
| Environment | Operating 0 °C to 40 °C below 80% RH · storage −10 °C to 70 °C below 70% RH · altitude to 2000 m · installation category II, pollution degree 2 |
| Size and mass | 225 × 143 × 278 mm · 8.0 kg |
| Warranty | 1 year, subject to product registration with GPS |
Before you order
Series gives 60 V, not 64
The channels do not simply add
Two 32 V channels in series reach 60 V, not 64. If your work needs the last four volts, this is not the supply for it, and it is worth checking before a test procedure is written around the wrong number.
Which model do you need?
Resolution and accuracy, nothing else
The GPS-3303X resolves to 1 mV and 1 mA and holds ±(0.03% of reading + 10 mV); the GPS-3303DPX resolves to 10 mV and 10 mA at ±(0.5% + 2 digits). Everything else, including every regulation figure, is identical.
It runs on any mains you have
100, 120, 220 or 230 V
The same instrument suits a UK bench, a European one or a North American one, which matters if equipment moves between sites.
Standards
Confirmation on request
We will supply the declaration of conformity and the standards it cites with any quotation. Ask for it with your enquiry and we will send it before you order rather than after.
What’s in the kit
- GPS-3303X or GPS-3303DPX power supply
- Output test leads, two sets
- Mains lead
- USB cable
- Quick start guide and calibration certificate
Available separately
Test leads, rack mounting and calibration are available from GPS. Control software is a free download. Tell us the quantity and we will quote the lot together.