Information

Designed and built in Europe by:
Thurlby Thandar Instruments Ltd.
Glebe Road, Huntingdon, Cambridgeshire. PE29 7DR United Kingdom
Tel: [phone] Fax: [phone]
Email: [e-mail] Web: www.tti-test.com
Brochure Part No. 82100-1410
QPX600D & QPX600DP - Technical Specifications
OUTPUT SPECIFICATIONS (each Output)
Voltage/Current Levels
Voltage Range: Range 1 - 0V to 60V; Range 2 - 0V to 80V
Current Range: 0A to 50A.
Power Range: Up to 600W - see PowerFlex+ power envelope graph.
Operating Mode: Constant voltage or constant current with automatic cross-over
and mode indication.
Output Setting
Voltage Setting: By floating point numeric entry or rotary jog wheel;
resolution 1mV for 60V range or 2mV for 80V range.
Current Setting: By floating point numeric entry or rotary jog wheel; resolution 10mA.
Setting Accuracy: Voltage - 0.1% ± 2mV; 0.1% ± 4mV on 80V range
Current - 0.3% ± 20mA
Setting Stores: Up to 10 set-ups can be saved and recalled via the keyboard
(or the digital interfaces on QPX600DP).
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. The output to be controlled is first selected with the appropriate Control key.
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: Typically <3mV rms, <20mV pk-pk, (20MHz bandwidth).
Transient Response: <2ms to within 100mV of set level for 5% to 95% load change.
Temp. Coefficient: Typically <100ppm/oC.
Sensing: Selectable local or remote sensing.
Output Protection
External Voltage: Output will withstand forward voltages of up to 90V.
Reverse protection by diode clamp.
Power Limit: Automatic protection within PowerFlex+ control system.
Fault Trip: The output will be shut down if any of the four trip conditions listed
below occur.
Over Voltage (OVP): Settable 2V to 85V in 0.1V steps
Over Current (OCP): Settable 2A to 55A in 0.1A 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.
Output Switching
Push switch operating electronic power control. LED indication of On state
Connection
Output Terminals: 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 rear panel.
LINK MODES
In addition to independent output operation, the instrument is capable of operating in a number of
different voltage and current tracking modes which can be activated from the Link Menu.
These modes include Output 2 voltage (V2) tracking Output 1 voltage (V1) by any ratio in the range
5% to 2000%, V2 and I2 set to track V1and I1 (1:1) with total V1 + V2 displayed (useful when
Output 1 and Output 2 are series connected), V2 and I2 set to track V1and I1 (1:1) with total I1 +
I2 displayed (useful when Output 1 and Output 2 are parallel connected).
METERING (each Output)
Display Type: Large dot-matrix black-on-white backlit LCD.
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 (CI mode and Unreg)
Current: 0.3% of reading ± 2 digits (CV mode and Unreg)
Additional Metering Functions
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.
ANALOG & LOGIC INTERFACES (each Output)
Analog Remote Control and Monitoring
Non-isolated inputs and outputs to set voltage and current limit and to monitor actual output volt-
age 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 Control Input and Output
LOGIC IN is 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 is 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 (QPX600DP only)
The QPX600DP 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 opto-isolated from the
output terminals.
RS-232
Standard 9-pin D connector. Baud rate 9,600.
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
DIGITAL PROGRAMMING PERFORMANCE (QPX600DP only)
Setting Accuracy and Resolution
As per Manual Control (see Output Setting under Output Specifications)
Programming Speed
Command Delay: 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 (QPX600DP 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, and Vista. Windows is a trademark of Microsoft.
GENERAL SPECIFICATIONS
Input
AC Input: 110V to 240V AC ±10%, 50/60Hz. Installation Category II.
Input Power: 1600VA max.
Temperature & Environmental
Operating Range: +5ºC to +40ºC, 20% to 80% RH
Storage Range: -40ºC to + 70ºC
Environmental: Indoor use at altitudes up to 2000m, Pollution Degree 2.
Cooling: Intelligent variable-speed fans.
Safety & EMC
Safety: Complies with EN61010-1
EMC: Complies with EN61326
Physical
Size: 350 x 130 x 413mm (WxHxD) (3U height) .
Weight: 9.2kg (20lb).
OPTIONS
Rack Mount (RM310A)
19 inch 3U rack mount.
Thurlby Thandar Instruments Ltd. operates a policy of continuous development and reserves the right to
alter specifications without prior notice.
Accuracy specifications apply for the temperature range 18°C to 28°C after 1 hour warm-up.