英國TTi CPX400D/CPX400DP可編程直流穩壓電源

CPX400D/CPX400DP是各地的線性穩壓電源，它集成了除數字接口的重要的新的手動控制功能。

調節使PowerFlex 840瓦的總功率可以構造成適合每一個具體的應用。

產品特點：

• 高性能的單組或雙組輸出
• PowerFlex設計了可變電壓和電流
• 在功率包絡的組合
• 每組輸出高達60V和20A，（420W）
• 恒定電壓或恒定電流操作
• 輸出噪聲低和良好的瞬態響應
• PowerFlex或固定的操作范圍加上自定義的限制
• 真實的模擬控制與數字設置鎖定（S -鎖）
• 獨立的輸出或隔離電壓跟蹤（D型）
• 輸出可以串聯或并聯120V或40A
• 獨立的或同步開關輸出（D型）
• 可變OVP旅行安全接線端子；
• 4位分辨率固定米；可選遙感
• GPIB接口，串口，USB和LAN接口（cpx400dp和SP），
• 局域網接口C級LXI兼容
• 隔離的模擬遠程控制接口（cpx400sa只）
• 緊湊的1 / 4或1 / 2架3U尺寸
• 復制后的終端（cpx400dp，cpx400sp和cpx400sa）

技術規格：

OUTPUT SPECIFICATIONS (each output)

Voltage/Current/Power Levels

Voltage Range: 0V to 60V.
Current Range: 0A to 20A.
Note: Actual maxima for voltage and current are typically 1% greater than the figures given above.
Power Range: Up to 420W per output subject to power envelope.

Power Envelope

The maximum current at any voltage settings is limited by the power envelope which is set to give 7A at 60V rising to 20A at 20V under all ac supply conditions (both outputs loaded). At lower output voltages the power is restricted by the 20 amps current maximum. See PowerFlex power envelope graph

Output Setting & Control

Voltage Setting: By coarse and fine controls.
Current Setting: By single logarithmic control.
Output Mode: Constant voltage or constant current with automatic cross-over. CC indicator for constant current mode.
Output Switch: Electronic, non isolating. Preset voltage and current limit displayed when Output is off.
                       Output rise time no load <10ms.
View Settings: With the output On, the meters show actual voltage and current. The preset levels can be viewed and
                      adjusted at any time by pressing the View Settings button.
Status Indication: LED indication of Output On, V/I Limits, CV, CI, Power Limit, Remote, LAN status.
                          Message on meter display for trip condition.

S-Lock (Settings Lock)

Voltage and current settings can be locked by a single button press. Lock accuracy is equal to the meter accuracy (see Meter Specifications).

Output Performance

Ripple & Noise: Typically <3mV rms, <15mV pk-pk, in CV mode.
Load Regulation: Voltage - <0.01% of maximum output for any load change within the PowerFlex envelope.
                         Current - <0.05% of maximum output for any load change within the PowerFlex envelope.
Line Regulation: Voltage - <0.01% of maximum output for a 10% line change.
                        Current - <0.01% of maximum output for a 10% line change.
Transient Response: <250us to within 50mV of setting for a 5% to 95% load change.
Temp. Coefficient: Typically <100ppm/oC

Output Protection

Output Protection: Forward protection by Over-voltage Protection (OVP) trip.
                            Reverse protection by diode clamp for currents to 3A.
OVP Setting/Range: Via screwdriver adjustable preset on front panel. Range 1V to 66V
Over-temperature: Output trips off for over-temperature.
Safety Interlocks: Operations that could cause an unexpected change in voltage or current settings are interlocked
                           with the output switch.

Output Connections

Power Terminals: Universal 4mm safety binding posts on 19mm (0.75") spacing at front.
                           Screw terminals at rear (CPX400SP, SA and DP only).
Remote Sense
Sense Selection: Voltage sensing is selected as Local or Remote by front panel switch.
Sense Terminals: Sprung loaded screw-less terminals at front. Screw terminals at rear (CPX400DP only).

METER SPECIFICATIONS (each output)

Display Type: Dual 4-digit meters, 10mm (0.39") LED.
Voltage Meter
Resolution/ Accuracy: 10mV; +/- 0.1% of reading +/- 2 digits
Current Meter
Resolution/ Accuracy: 10mA ; +/- 0.3% of reading +/- 20mA

VOLTAGE TRACKING (Dual output models)

Independent Mode
In the normal mode of operation, each output is fully independent and isolated. Operation is equivalent to two single output power supplies.
Voltage Tracking Mode
The two outputs remain isolated, but the Slave voltage controls are disabled and the Slave voltage is set equal to the Master voltage. This can be used to generate tracking bipolar voltages, or tracking unipolar voltages relative to different grounds.
When voltages greater than 60V are required, the outputs can be wired in series to generate 0 to 120V with the voltage controlled from the Master.
When currents greater than 20A are required, the outputs can be wired in parallel to create the equivalent of a 40A power supply with the voltage controlled from the Master.
Track Accuracy: Slave voltage = +/- (0.1% of Master voltage setting + 10mV)

BOTH ON / BOTH OFF (Dual output models)

Each output has an independent DC On/Off control, however, an additional control button is provided which turn both outputs on or off simultaneously.

DIGITAL BUS INTERFACES (CPX400SP and CPX400DP only)

These models 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. Note: Remote/Local Sense, is manually selectable only.
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

Voltage Setting
Resolution/Accuracy: 1mV; +/- (0.05% +10mV)
Current Setting
Resolution/Accuracy: 1mA; +/- (0.3% +5mA)
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: <80ms* to 1% (full load); <1.5s* 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.

DRIVER SOFTWARE SUPPLIED

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.
Windows is a trademark of Microsoft.

ANALOGUE REMOTE INTERFACE (CPX400SA only)

The CPX400SA offers galvanically isolated analogue remote control of voltage and current from control voltages. Voltage and current front panel settings generate non-isolated analogue output voltages that can be used to control slave power supplies.
Input Scaling: 0 to 100% control of voltage or current from 0 to 5V or 0 to 10V (selectable)
Input Accuracy: Voltage: 0.3% +/-20mV. Current: 0.5% +/-50mA. Input impedance 10kOhms
Output Scaling: Set values of 0 to 100% of rated output voltage and current generate 0 to 5V (not isolated)
Output Accuracy: Voltage: 0.3% +/-20mV. Current: 0.5% +/-50mA. Output impedance 125Ohms
Remote On/Off: Output On/Off can be controlled by external switch closure (not isolated)

GENERAL SPECIFICATIONS

Input
AC Input: 110 to 240 volts +/-10% 50/60Hz. Installation Category II.
Input Power: 1250VA 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: Rear discharge variable speed fan.
Safety & EMC
Safety: Complies with EN61010-1
EMC: Complies with EN61326
Physical
Size: Single - 107 x 130 (1/4 rack 3U) x 398mm; Dual - 210 x 130 mm (1/2 rack 3U) x 377mm
(size excludes feet, knobs and terminals).
Weight: Single - 4.25kg (9.35lb), Dual - 6.3kg (13.9lb))

OPTIONS

Rack Mount (RM300A)
19 inch 3U rack mount suitable for one or two dual power supplies.
Rack Mount (RM460)
19 inch 4U rack mount with above/below ventilation suitable for up to 4 single or 2 dual power supplies (or mixture)

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.