THURLBY THANDAR INSTRUMENTS QL Series II Precision linear dc power supplies - single and triple outputs unrivalled accuracy, resolution, stability and noise performance advanced user interface gives superior control multiple output ranges provide greater flexibility GPIB, RS-232, USB and LAN interfaces; LXI class C compliance aimtti.com aimtti.co.uk | aimtti.us Linear regulation with more than 100 watts per output 16-bit precision, 1mV setting resolution Multiple ranges for increased flexibility One third or two third rack width, 4U height Duplicate rear terminals (P versions) Direct numeric setting of voltage or current Current resolution down to 0.1mA Individual output switches plus master control Watts display (V x A) Variable over-voltage and over-current protection trips Rotary control of voltage and current Up to 160 memory stores for voltage and current settings Safety binding post terminals can accept fixed-shroud 4mm plugs** as well as normal plugs, bare wires, and fork connectors Linked mode control for tracking operation or series/parallel wiring Remote or local sense with keypad selection Fully bus programmable via USB, RS232, GPIB or LAN interfaces (P versions) Building upon success The original QL series re-defined the laboratory power supply in terms of precision and performance. Now the QL Series II builds upon that success and adds new features and models. Exceptional precision The QL series offers an unparalleled level of precision. Voltage and current are controlled using instrumentation quality 16 bit DACs enabling voltages to be set to 1mV resolution even at full output voltage. Indeed, the accuracy is sufficient for the QL to be used as a calibration source for some hand-held DMMs. Multiple ranges for greater flexibility The QL series II provides multiple ranges for increased current capability at lower voltages. The QL564, for example, is a 112W PSU with three ranges. The main range offers 0 to 56 volts at up to 2 amps. The higher current range provides up to 4 amps for voltages up to 25V. A further low current range provides an enhanced current setting and measurement resolution of 0.1mA. Unrivalled performance The QL series uses pure linear technology and offers unrivalled performance in terms of regulation, output noise and dynamics. Line and load regulation are close to the limit of measurement. Recovery time from transient current pulses is better than 50s. Differential output noise is less than 350V rms in CV mode and down to 20A rms in CI mode. Of equal importance for critical applications in areas such as telecoms is common mode noise current (the noise current flowing between the output terminals and ground). This is only ??A rms on the QL - dramatically better than most other PSUs. Auxiliary output, fully variable 1.00V to 6.00V at 3A (bus control and readback on P versions) Advanced dc power supply range, single or triple output Very high precision, very low noise, excellent dynamics Advanced user interface with numeric and rotary control Multiple voltage/current ranges for increased flexibility Multiple non-volatile memories for power supply set-ups Switchable remote sense provides perfect load regulation Comprehensive protection including OVP and OCP trips Compact bench footprint; modular width for rack mounting Auxiliary output fully variable 1.00V to 6.00V at 3A with selectable voltage and current metering (T models) Bus programmable via USB, RS232, GPIB or LAN (P models) LAN interface is LXI class C compliant Duplicate power and sense terminals at rear (P models) Exceptional facilities and performance Fast, simple and safe to use OVP and OCP trips with "alarm" output The user interface of the QL series has been painstakingly designed to provide rapid control whilst guarding against any possibility of error. Unlike other digitally controlled units, the QL series provides both numeric and rotary control. Illuminated keys and display legends provide instant confirmation of settings and status. Voltage and current setting can be performed in either of two ways: The QL series provides fully adjustable over-voltage and over-current trips. These trips can be used both as a fail-safe against accidental mis-setting and as a protection against inappropriate load conditions. In addition to turning the output off, a trip condition switches the rear panel alarm signal enabling other equipment to be controlled. For complete protection of the power supply, the trip will also be operated by over-temperature, or excess voltage on the sense terminals. Direct numeric entry Instant watts display Settings can be made by direct numeric entry using the 0 to 9 keypad. Each new setting is previewed on the display and must be confirmed with the OK key. Settings recalled from memory are similarly previewed and confirmed. Numeric setting is very fast requiring only three key presses to set to 5 volts, for example, (V, 5, OK). To set a more precise level such as 12.725 volts requires more key presses, but can still be done in seconds. The product of voltage and current can be displayed at any time by pressing the V x A button. The power is displayed with a resolution down to 1 milliwatt. Incremental rotary control For those preferring quasi-analogue control, or for applications where the voltage or current must be gradually changed, the Jog wheel is available. The wheel has a positive stepped action but can be spun rapidly when required. Output voltage can be incremented or decremented in steps of 0.1V, 10mV or 1mV. Current steps can be selected from 0.1A down to 0.1mA. The Jog function can be left permanently engaged or can be disabled at the touch of a button. Instant Limits view To enable the current limit to be set before connecting the load, the limit setting is displayed when the output is set to Off. Pressing the Limits key at any time provides a temporary display of the limit values allowing precise adjustment to be made. Setting memories for added convenience The QL Series II provided storage of up to 50 power supply sets-up in nonvolatile memory (160 set-ups for a triple). Voltage, current, OVP and OCP are all saved. An further power-down memory is also incorporated. Upon mains switch-off, the set-up of the PSU is saved and is automatically restored at switch-on. On the triple output models, independent memories are provided for each output, plus an additional set for `linked' mode where the user may wish to recall settings for both outputs simultaneously. Remote or local sense Further facilities - triple output models These triple output models have two main outputs plus one auxiliary output. The casing is twice the width of a single output model (two-thirds rack). Linked mode convenience The triple output models have two identical outputs which are both independent and isolated. Illuminated keys selects which output is to be adjusted and provide unambiguous indication. In situations where the user wishes to set similar voltages or currents on both outputs, "linked" mode is available. When linked, all adjustments are applied to both outputs simultaneously. Linked mode can provide tracking outputs and is particularly useful when the user wishes to wire the outputs in series or parallel to obtain higher voltages or currents. A "copy" function allows all of the settings of one output to be duplicated on the other prior to linking. For even greater flexibility, the outputs can be linked when set to different voltages or currents allowing separate settings to be loaded into the linkedmode memories for simultaneous recall. Auxiliary output for low voltage circuits The triple output models incorporate a third "auxiliary" output intended for powering logic and other low voltage circuitry. This output is fully isolated from the main outputs and provides a fully variable voltage of between 1.00 and 6.00 volts at a current of up to 3 amps. The QL series provides full remote sense capability via dedicated sense terminals. Remote sense is essential to maintain regulation at the load (two 0.01 Ohm connection leads will drop 100mV at 5 amps). When remote sense is not required, internal local sensing can be selected at the touch of a button. Safety binding-post terminals All QL series power supplies are fitted with the new TTi designed output terminals. As well as acting as conventional binding posts for bare wires, spade connectors, or standard 4mm plugs, these can accept a 4mm safety plug with rigid insulating sleeve, a requirement specified by an increasing number of laboratories for safety reasons. Limited opening length combined with raised insulated shoulders also make these terminals "touch proof" for voltages up to 250V. Voltage and current can be read on the main display at the touch of a button. An independent output on/off switch is provided. On P versions, voltage and on/off status are bus controllable, and output current and status can be read-back. Comprehensive output control Each output has its own illuminated dc on/off key providing completely independent control. For situations where power needs to be connected or disconnected from all three outputs together, master on/off keys are also provided. Comprehensive Remote Control (QL-P) Bench and System use The QL-P models include all of the manual control features of the standard models plus comprehensive digital interfaces and rear terminals. All power supply settings can be controlled via the bus. Voltage and current can be set to a resolution of 1mV or 0.1mA for each main output, and to 10mV for the auxiliary output. Actual voltage and current can be read back along with the power supply status. Rear output terminals Power and sense terminals are duplicated on the rear panel for rack mount applications or other situations where rear connection is more appropriate. Digital remote control To meet the varying needs of today's engineers, a comprehensive array of interfaces is provided. RS-232, USB, GPIB and LAN (Ethernet) with LXI support are provided as standard. Each of the digital bus interfaces provides full control of voltage, current, and output on/off, plus read-back of voltage, current and status. The interfaces are at ground potential and are opto-isolated from the output terminals. GPIB The GPIB interface is compliant with IEEE-488.1 and IEEE-488.2. Currently GPIB remains the most widely used interface for system applications. RS-232 An RS-232/RS-423 interface is provided for use with legacy systems. This type of serial interface remains in common useage and is perfectly satisfactory for the control of power supplies because data speed is not an issue. USB USB provides a simple and convenient means of connection to a PC and is particularly appropriate for small system use. A USB driver is provided which supports Windows 2000, XP , Vista and Windows 7. Further versions will be supported as they are released. LAN (Ethernet) The LAN interface uses a standard 10/100 base-T Ethernet hardware connection with ICMP and TCP/IP Protocol for connection to a Local Area Network or direct connection to a single PC. This interface supports LXI and is highly appropriate for system use because of its scalable nature and low cost interconnection. LXI Compliance The LAN interface is compliant with LXI-C. LXI (LAN eXtensions for Instrumentation) is the next-generation, LAN-based modular architecture standard for automated test systems managed by the LXI Consortium, and is expected to become the successor to GPIB in many systems. For more information on LXI and how it replaces GPIB, or operates along side it, go to: www.tti-test.com/go/lxi IVI Driver An IVI driver for Windows is included. This provides support for common high-level applications such as LabView*, LabWindows*, and HP/Agilent VEE*. Compact design for bench or rack The QL series are highly compact with a small footprint for bench use. Fold-away feet are incorporated which can be used to angle the front panel upwards. Single output models are one-third rack width, whilst triple output models are two thirds rack width. A universal rack mount tray is available which will mount one, two or three singles, one triple, or one triple plus one single. On P versions, rear output terminals are provided for system use. Technical Specifications Model Table Model O/Ps QL355 1 QL564 1 QL355T 3 QL564T 3 QL355P 1 QL564P 1 QL355TP 3 QL564TP 3 Main Output(s) 0 - 35V/0 - 3A or 0 - 15V/0 - 5A 0 - 56V/0 - 2A or 0 - 25V/0 - 4A 2 x 0 - 35V/0 - 3A or 0 - 15V/0 - 5A 2 x 0 - 56V/0 - 2A or 0 - 25V/0 - 4A 0 - 35V/0 - 3A or 0 - 15V/0 - 5A 0 - 56V/0 - 2A or 0 - 25V/0 - 4A 2 x 0 - 35V/0 - 3A or 0 - 15V/0 - 5A 2 x 0 - 56V/0 - 2A or 0 - 25V/0 - 4A Aux Output 1 - 6V/3A 1 - 6V/3A 1 - 6V/3A 1 - 6V/3A Max. Power 105W 112W 228W 242W 105W 112W 228W 242W Interfaces RS232/USB/GPIB/LAN RS232/USB/GPIB/LAN RS232/USB/GPIB/LAN RS232/USB/GPIB/LAN Terminals Front only Front only Front only Front only Front/Rear Front/Rear Front/Rear Front/Rear Input V/A 250 max. 250 max. 500 max. 500 max. 250 max. 250 max. 500 max. 500 max. Size W x H x D (mm)* 140 x 160 x 290 140 x 160 x 290 280 x 160 x 290 280 x 160 x 290 140 x 160 x 290 140 x 160 x 290 280 x 160 x 290 280 x 160 x 290 Weight (kg) 5.4 5.4 10.5 10.5 5.5 5.5 10.6 10.6 * Dimensions exclude feet and terminals. Single output models are 1/3rd rack x 4U. triple ouput models are 2/3rd rack x 4U. MAIN OUTPUT(S) SETTINGS MEMORIES QL355, QL355P, QL355T, QL355TP Main Output(s): Max. Output Power: 105 watts Output Ranges: Range 1 - 0 to 35V, 0 to 3A Range 2 - 0 to 15V, 0 to 5A Range 3 - 0 to 35V, 0 to 500.0mA Parameters Stored: Recall system: Linked Mode: QL564, QL564P, QL564T, QL564TP Max. Output Power: 112 watts Output Ranges: Range 1 - 0 to 56V, 0 to 2A Range 2 - 0 to 25V, 0 to 4A Range 3 - 0 to 56V, 0 to 500.0mA All Models Voltage Setting: Current Setting: By floating point numeric entry or rotary jog wheel; resolution 1mV. By floating point numeric entry or rotary jog wheel; resolution 1mA or 0.1mA depending on range. Setting Accuracy: Voltage - 0.03% 5mV. Current 0.2% 5mA/0.5mA Output Mode: Operation in constant voltage or constant current modes with automatic cross-over and mode indication by LEDs. DC Output Switch: Sets output voltage and current levels to zero when Off. Output Terminals: 4mm safety binding post terminals on 19mm (0.75") spacing. Duplicated on rear terminal block (P versions only) Load Regulation: For any load change, at the output terminals, using remote sense. Voltage <0*01% + 2mV. Current <0*01% + 250A; <0.01% +50A on 500mA range. Add typically 2*5mV for a 0*5V drop in the positive output lead. Line Regulation: Voltage <0*01% + 2mV for 10% line change. Current <0*01% + 250A; <0.01%+ 50A on 500mA range Ripple and Noise: Typically <0.35mV rms CV mode, and <0.2mA rms CI mode (<20A rms on 500mA range) Transient Response: <20usec to within 15mV of setting for 90% load change Temperature Coeff.: <(50ppm+0.5mV)/ oC (voltage), <(100ppm+1mA/0.1mA)/oC (current) Remote Sense: Eliminates up to 0.5V drop per lead. Remote sense operation selected from front panel and indicated by LED Sense Terminals: Recessed sprung sockets for direct insertion of wires Duplicated on rear terminal block (P versions only) OUTPUT PROTECTION Output Protection: Output will withstand forward voltages of up to 20V above rated output voltage. Reverse protection by diode clamp for currents up to 3A. Fault Condition Trip: The output will be shut down if any of the four trip conditions listed below occur. In addition to the output being set to Off, an isolated rear panel signal is also activated. Over Voltage (OVP): Settable 1V to 40V (QL355) or 60V (QL564) in 0.1V steps Over Current (OCP): Settable 0.1A to 5.5A (QL355) or 4.5A (QL564) in 0.01A steps Over Temperature: Monitors internal temperature rise to protect against excess ambient temperature or blocked ventilation slots. Sense Error: Monitors the voltage between the remote sense terminals and output terminals to protect against mis-wiring. Trip Output Signal: Isolated open-collector output signal on rear panel. METERING Display Type: Dual digital displays per output using 14mm (0.56") high brightness LEDs. 5 digits for voltage, 4 digits for current. Update rate 4 per second. Meter Function: Voltage meter shows set voltage when in CV mode and measured voltage when in CI mode. Current meter shows measured current when in CV mode and set current when in CI mode. Limits Display: With the dc output switch set to Off, both meters show the set values (i.e. the limits). With the output On, either the voltage meter or current meter will show a measured value (depending on the CV/CI mode). Pressing the Limits button will provide a temporary display of the set values. Watts (VxA) Display: The voltage meter can be made to show the instantaneous calculated product of voltage and current. Meter Resolution: Voltage: 1mV (CV mode) or 10mV (CI mode) Current: 1mA or 0.1mA depending on range Power: 0.01W or 0.001W depending on range Meter Accuracy: Voltage: 0.1% of reading 10 mV (CI mode) Current: 0.2% of reading 0.005A or 0.5mA (CV mode) Power: 0.3% of reading 0.05W or 0.005W Auxiliary Output: or remote interfaces. Up to 50 set-ups per output can be saved and recalled via the keyboard or remote interfaces. Range, Set volts, Set current, OVP, OCP. Settings are previewed onto the displays before being actioned. On triple output models when in Linked mode, a further set of 50 memories stores and recalls values for both outputs simultaneously. Up to 10 voltage settings can be saved and recalled via the keyboard ALARM OUTPUT Isolated rear-panel open-collector output signal. User can select output to be activated for either OVP, OCP, Overtemperature or Sense miswiring, or for any of those four faults. LINK & COPY - Triple Output Models Each output can be controlled independently or can be linked. When linked, keyboard and jog wheel control operates on both outputs simultaneously. Linked mode can be used to create tracking outputs, or for convenient series or parallel operation of the two outputs. A Copy function is available which copies all of the settings for output 1 to output 2 (Range, Set volts, Set current, OVP, OCP). Linked mode can also be used to store the settings for both outputs to a group of common memory stores when simultaneous recall is required. (Note: Linked mode can be selected with differing voltage and current settings on the two outputs. However both outputs must be set to the same range.) AUXILIARY OUTPUT - Triple Output Models Output Voltage: Output Current: DC Output Switch: Setting Accuracy: Ripple and Noise: Load Regulation: Line Regulation: Meter Accuracy: Output Protection: Output Terminals: 1.00 to 6.00V >3.0 A maximum. LED indication of over-current. Sets output voltage level to zero when Off. 0.5% 10mV <2mV rms, 10mVp-p < 1% for 90% load change. < 0.1% for 10% line change. Voltage 0.5% 10mV, Resolution 10mV Current 0.5% 10mA, Resolution 10mA Output will withstand up to 16 V forward voltage. Diode clamped for reverse voltages and 1 Amps reverse current. 4mm safety binding post terminals on 19mm (0.75") spacing. Duplicate screwless terminals at rear (P versions only) DIGITAL BUS INTERFACES (P suffix versions only) 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 opto-isolated from the output terminals. RS-232 Standard 9-pin D connector. Baud rate variable 600 to 19,200. 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. 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. (LXI is the abbreviation for Lan eXtensions for Instrumentation). For more information visit: www.tti-test.com/go/lxi DRIVER SOFTWARE SUPPLIED (P versions only) IVI Driver An IVI driver for Windows is supplied. This provides support for common applications such as LabView*, LabWindows*, HPVEE* etc. USB Driver An installation file is supplied which calls a standard Windows* USB driver. * LabView and LabWindows are trademarks of National Instruments. HPVEE (now Agilent VEE) is a trademark of Agilent Technologies. * USB interface is supported for Windows 2000, XP, Vista and Windows 7. Further versions will be supported as they are released. Windows is a trademark of Microsoft. Specifications (Continued) DIGITAL PROGRAMMING PERFORMANCE (P versions only) Voltage Setting - Main Output(s) Resolution/Accuracy: 1mV / (0.03% +5mV) Current Setting - Main Output(s) Resolution/Accuracy: 0.1mA / (0.2% +5mA) or 0.01mA / (0.2% +0.5mA) on 500mA range Voltage Setting - Auxiliary Output (Triple Output Models) Resolution/Accuracy: 10mV / (0.5% +10mV) Programming Speed Command Delay: Typically <25ms (this must be added to any of the figures below) Voltage Up Time: <10ms* to 1% Voltage Down Time: <40ms* to 1% (full load); <0.6s* to 1% (no load) * The up and down times vary with range and voltage step size. More information is contained in the operating manual which can be downloaded from our web site. KEYBOARD & ROTARY CONTROL All functions, including the selection and set-up of the remote control interfaces, can be set from the keyboard. The rotary jog control can be used to adjust output voltage and current settings in a quasi-analogue mode. GENERAL SPECIFICATIONS Input AC Input: Input Power: 230V AC or 115V AC 10%, 50/60HzInstallation Category II. Single - 250VA max., Triple - 500VA max. Temperature & Environmental Operating Range: Storage Range: Environmental: Cooling: +5C to +40C, 20% to 80% RH -40C to + 70C Indoor use at altitudes up to 2000m, Pollution Degree 2. Intelligent variable-speed fan. Over-temperature trip shuts down output if internal temperatures exceed predetermined thresholds.. Safety & EMC Safety: EMC: Complies with EN61010-1 Complies with EN61326 Physical Size: Weight: Single - 140 x 160 (1/3 rack, 4U) x 290mm Triple - 280 x 160 (2/3 rack, 4U) x 290mm (size excludes feet, knobs and terminals). Single - 5.5kg (12lb), Triple - 10.5kg (23lb) OPTIONS Rack Mount Other TTi Power Supply Series EL-R series Compact linear regulated power supply series with analog controls. Single, dual and triple outputs. 30 to 130 watts PL & PL-P series Advanced linear regulated power supply series with analog controls combined with digital functions. Ultra compact. Single and dual outputs. 75 to 180 watts. Models with RS-232, USB, LAN, and optional GPIB (PL-P). PLH & PLH-P series Higher voltage versions of the New PL and PL-P series offering output voltages up to 250V. Single output, 90 watts. Models with RS-232, USB, LAN and optional GPIB (PLH-P).. EX-R series Compact mixed-mode regulated power supply series with analog controls. Single, dual and triple outputs. 175 to 420 watts. TSX & TSX-P series High performance mixed-mode regulated single output power supply series with analog or digital controls. 360 watts. RS-232 and GPIB controlled models (TSX-P). CPX series Compact `PowerFlex' regulated series, single and dual output with analog controls. 350 to 840 watts. Models with RS-232, USB, GPIB and LAN interfaces (CPX-P). QPX series High power PowerFlex and PowerFlex+ regulated units, digital controls. Single and dual outputs, 1200 watts. Analog, RS-232, USB, GPIB & LAN (LXI) interfaces (QPX-P). RM410 19 inch 4U mount for up to three single output units or one triple plus one single. Blanking plates are supplied for unused sections. Accuracy specifications apply for the temperature range 18oC to 28oC after one hour warm-up. Thurlby Thandar Instruments Ltd. operate s a policy of continuous development and reserves the right to alter specifications without prior notice. Designed and built in Europe by: Thurlby Thandar Instruments Ltd. Glebe Road, Huntingdon, Cambridgeshire. PE29 7DR United Kingdom Tel: +44 1480 412451 Fax: +44 1480 450409 Email: sales@tti-test.com Web: www.tti-test.com Brochure Part No. 82100-1190 Iss. 2