| OUTPUT SPECIFICATIONS |
| Voltage/Current Levels |
| Voltage Range: |
Range 1 - 0V to 50V Range 2 - 0V to 80V |
| Current Range: |
10mA to 50A |
| Power Range: |
Up to 750W |
| Output Settings |
| Operating Mode: |
Constant voltage, constant current or constant power with automatic cross-over dependent on output setting parameters CV, CC or CP mode indication in display |
| Voltage Setting: |
By floating point numeric entry or rotary jog wheel.
Resolution- 1mV for 50V range, (2mV for 80V range). |
| Current Setting: |
By floating point numeric entry or rotary jog wheel; Resolution 10mA. |
| Setting Accuracy: |
Voltage- 0.1% ± 2mV on 50V range, (0.1% ± 4mV on 80V range) Current - 0.3% ± 20mA. |
| OUTPUT PERFORMANCE |
| Load regulation |
<0.01% +5mV (CV mode) for any load change within the PowerFlex envelope,using remote sense. |
| Line regulation: |
<0.01% +5mV for a 10% line voltage change. |
| Ripple & Noise: (20MHz bandwidth). |
Typically <3mV rms, <20mV pk-pk. |
| Transient Response: |
To within 100mV of set level for a 5% to 95% load change.
Rear Terminals: <2ms
Front Terminals: <2.5ms |
| Sensing: |
Selectable local or remote sensing. |
| Output Protection: |
Output will withstand forward voltages of up to 90V. Reverse protection by diode clamp. |
| Over Voltage protection (OVP): |
Settable 2V to 90V in 0.1V steps. |
| Over Current protection (OCP): |
Settable 2A to 55A in 0.1A steps. |
| Over Temperature protection: |
Monitors internal temperature rise to protect against excess ambient temperature or blocked ventilation slots |
| Temp. Coefficient: |
Typically <100ppm/oC. |
| Sense Error: |
Monitors the voltage between the remote sense terminals and output terminals to protect against mis-wiring |
| METER SPECIFICATIONS |
| Display Type: |
4.3 inch (10.9 cm) backlit TFT LCD, 480 x 272 pixels total, 16 colours, resistive touch screen. |
| Meter Function: |
5 digit voltage meter and 4 digit current meter. Display of limits values,memory contents etc. Wide range of alpha-numeric messages/menus |
| Limits Display: |
Limits settings can be displayed simultaneously with measurements. |
| Meter Resolution: |
Voltage- 1mV (2mV on 80V range). Current- 10mA |
| Meter Accuracy: |
Voltage: 0.1% of reading ± 2 digits.
Current: 0.3% of reading ± 2 digits. |
| V x A: |
Display shows calculated power in watts. Resolution- 0.1W. Accuracy- 0·5% ± 0·1W. |
| V/A: |
Display shows calculated resistance. Resolution up to 5 digits. Measurement uncertainty is shown on display*. |
| FRONT PANEL CONTROLS |
| Output Switching: |
Push switch operating electronic power control. LED indication of On state. |
| Output Terminals: |
Front and Rear mounted safety terminals accepting 6mm wire diameter, 6mm plugs or 8mm spades at 50 Amps max, or 4mm plugs at 30 Amps max. |
| Sensing Terminals: |
Screw-less terminals on front and rear panel. |
| Setting Stores: |
Up to 50 set-ups (or 10 with QPX1200S & 600D) can be saved and recalled via the keyboard, and the digital interfaces with P-versions. |
| Keyboard Control: |
All functions, including the selection and set-up of the remote control interfaces, can be set from the keyboard. |
| Rotary control: |
The rotary Jog control can be used to adjust output voltage and current settings in a quasi-analogue mode. The output to be controlled is first selected with the appropriate control key |
| ANALOG & LOGIC INTERFACES |
| Analog Remote Control and Monitoring |
| Non-isolated inputs and outputs to set voltage and current limit and to monitor actual output voltage and current. These signals are referenced to the negative output and have a range of 0 to 10V or 0 to 5V (selectable via the keyboard). Note that the analog control voltage is digitised within the power supply. |
| Control Accuracy: |
Voltage: 0.3% ± 4mV; Current: 0.5% ± 40mA. |
| Monitor Accuracy: |
Voltage: 0.3% ± 4mV; Current: 0.5% ± 40mA |
| Logic Contorl Input and Output |
| LOGIC IN: |
A rear-panel opto-isolated input that is activated at an input current greater than approximately 1mA. User can set LOGIC IN (via the keyboard) to enable the output, disable the output, or be ignored when it is activated |
| LOGIC OUT: |
An isolated rear-panel open-collector output that will sink up to 2mA when activated (‘switch closure’); the maximum voltage that can be applied to LOGIC OUT is 30VDC. User can set LOGIC OUT to be ‘closed’ or ‘open’ for output enabled or disabled, current limit (CI mode),power limit (UNREG mode), or for any fault trip. |
| DIGITAL BUS INTERFACES (P VERSIONS ONLY) |
| The QPX-P offers full remote control and read-back using RS-232, USB, GPIB or LAN (compliant with LXI class C). All interfaces are at ground potential and optoisolated from the output terminals. |
| RS-232: |
Standard 9-pin D connector. Baud rate 9,600. (not available on QPX750SP). |
| USB: |
USB 2.0 connection (backwards compatible with USB 1.x). Operates as a virtual COM port. |
| GPIB: |
(IEEE-488) The interface conforms with IEEE-488.1 and IEEE-488.2. (Optional on QPX750SP). |
| Ethernet (LAN): |
Standard 10/100 base-T hardware connection. ICMP and TCP/IP Protocol for connection to Local Area Network or direct connection to a single PC. |
| LXI Compliance: |
LAN interface is compliant with LXI class C. |
| Remote command processing time: |
Typically <100ms between receiving the command terminator for a step voltage change at the instrument and the output voltage beginning to change. |
| Driver Software Supplied |
| IVI Driver: |
An IVI driver for Windows is supplied. This provides support for common applications such as LabView*, LabWindows*, KeysightVEE* etc. |
| USB Driver: |
An installation file is supplied which calls a standard Windows* USB driver |
| GENERAL SPECIFICATIONS |
| AC Input: |
110V to 240V AC ±10%, 50/60Hz. Installation Category II |
| Input Power: |
1000VA Max. |
| Temperature: |
Operating: +5ºC to +40ºC, 20% to 80% RH, Storage: -40ºC to + 70ºC |
| Environmental: |
Indoor use at altitudes up to 2000m, pollution Degree 2. |
| Cooling: |
Intelligent variable-speed fans. |
| Safety: |
Complies with EN61010-1. |
| EMC: |
Complies with EN61326. |
| Size: |
215 x 130 x 460mm (WxHxD) (3U High) Including terminals |
| Weight: |
7.7kg (16.9lb) |
| Benchtop Operation: |
Folding legs are incorporated that can be used to angle the front panel upwards. |
| Rack mount options: |
19 inch rack mount - RM460 (Provides ventilation space above and below PSU). |