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EX355P- USB （Single 0-35V/0-5A   USB單輸出）

EX355P -USB 英國TTI 可編程電源

The EX355P is a digitally controlled version of the EX355 with an isolated RS-232 interface.
Using mixed-mode regulation technology it provides 0 to 35V at 0 to 5A in a compact and
lightweight unit.
The EX355P offers a low-cost solution for a basic programmable PSU, and will be sufficient for
many applications where the sophistication and complexity of GPIB is not needed.
A simple command set allows remote control of voltage, current and output-enable together with
read-back of metering values and operational status.
Local control is via three rotary encoders providing rapid and accurate setting of voltage and
current for bench use.
Excellent line and load regulation are matched by low noise and good transient response. High
power efficiency ensures that the unit remains cool without any fan noise.
The EX series has been designed to meet the stringent requirements of the latest relevant IEC
standards for safety and EMC, including harmonics emissions. All outputs are intrinsically short
circuit proof, and are protected against external voltages and reverse currents.

EX355P -USB 英國TTI 可編程電源35V5A

General specifications apply for the temperature range 5°C to 40°C. Accuracy specifications
apply for the temperature range 18°C to 28°C after 1 hour warm-up with no load and calibration
at 23°C. Typical specifications are determined by design and are not guaranteed.
OUTPUT
Voltage Range: 0V to 35V minimum
Current Range: 0.01A to 5A minimum
Voltage Setting: By coarse and fine rotary encoders or RS-232 interface.
Resolution 10mV. Setting accuracy 0.3% ± 20mV (for V >0.1V)
Current Setting: By single rotary encoder or RS-232 interface.
Resolution 10mA. Setting accuracy 0.6% ± 20mA (for I >0.1A)
Operating Mode: Constant voltage (CV) or constant current (CC) with automatic crossover.
Output Switch: Electronic. Preset voltage and current displayed when off.
Output Terminals: Universal 4mm safety binding posts on 19mm (0.75”) pitch.
Output Protection: Output will withstand up to 40V forward voltage.
Reverse protection by diode clamp for reverse currents up to 3A.
Load Regulation: <0.01% of maximum output for a 90% load change.
Line Regulation: <0.01% of maximum output for a 10% line change
Ripple & Noise
(20MHz bandwidth):
Typically <2mVrms, <10mV pk-pk, constant voltage mode.
Transient Response: <200μs to within 50mV of set level for a 5% to 95% load change.
Voltage Programming
speed:
Maximum time required for the output to settle within 1% of its total
excursion (for a resistive load). Excludes command processing time.
90% load No load 90% load No load
Up 210ms 110ms Down 15ms 1.8s
Temperature Coefficient: Typically <100ppm/°C
Status Indication: Output on lamp. CC mode lamp.
METER SPECIFICATIONS

EX355P -USB 英國TTI 可編程電源
Meter Types: Separate 4 digit meter for voltage and 3 digit meter for current with
14mm (0.56") LED displays. Reading rate 4/sec.
Meter Resolutions: 100mV, 10mA
Note that in constant voltage mode the meter will show the set
voltage to resolution of 10mV. However, the metering resolution is
limited to 100mV and when in CC mode the last digit will be set to
zero.
Meter Accuracies: Voltage (CC mode) 0.3% ± 100mV.
Current (CV mode) 0.6% ± 20mA
MEMORY
The power supply saves the voltage, current and output-enable status at power down and

RS-232 CONTROL
Interface: RS-232 interface, fully opto-isolated from power supply output.
9-pin D connector.
Baud Rate: Variable from 600 baud to 9,600 baud.
Remote Functions: Set voltage, Set Current, Set Output On/Off, Read Voltage, Read
Current, Read On/Off, Read Mode (CV or CC).
Setting Accuracy: Voltage 0.3% ± 20mV (for V >0.1V).
Current 0.6% ± 20mA (for I >0.1A).
Setting Resolution: Voltage 10mV. Current 10mA.
Readback Accuracy: Voltage 0.3% ± 100mV. Current 0.6% ± 20mA.
Readback Resolution: Voltage 100mV. Current 10mA.
Remote command
processing time:
Typically <10ms between receiving the command terminator for a step
voltage change at the instrument and the output voltage beginning to
change.
GENERAL
AC Input: 220V-240V AC ± 10%, 50/60Hz.
110V-240V AC ± 10% by factory option.
Installation Category II.
Power Consumption: 400VA max.
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.
Safety: Complies with EN61010−1.
EMC: Complies with EN61326.
Size: 140 x 160 x 295mm (HxD).
Weight: 2.8 kg

EX355P -USB 英國TTI 可編程電源