British Standard Tester PSM verl.l/NOV07 Multi-Channels Regulated DC Power PSM series is a multi-channels DC power supply with 2-, 3-, and 4- output channels. Its high stability and enhanced linearity make this regulated Dc power supply significantly useful in where high performance and stable power sources are required. It is widely adopted for R&D, educational and industrial usage. • 2 Adjustable Channels Output (PSM 2 Series) 2 Adjustable Channels and 1 fixed Output (PSM 3 Series) 4 Adjustable Channels Output (PSM 4 Series) • 0 ~ 30V Linear Voltage Adjustment • 4 Sets of LED for Voltage and Current Output Display • Low Noise and Ripple; Less than lmV (5Hz ~ 1MHz) • Voltage and Current Pre-set Feature • CV/CC Mode Automatic Change • Auto Tracking Output • Auto Parallel or Series connection • Doubling Current with Series Connection • Doubling Voltage with Parallel Connection • 16 Hours Continuous Operation with Full Loading • Rugged Metal Cabinet Due to our policy of continual product development, we reserve the right to amend the specifications of all mentioned products without prior notice.

GERNERAL SPECIFICATION: CHANNEL OUTPUT Model Voltage Current Voltage Current Current Voltage Current OPERATION CONDITION: Environmental Condition Input Voltage Operating Condition Storage Condition Operating altitude <2000m, pollution degree II 110VAC /220VAC±10% at 50Hz Temperature 040℃ Relative Humidity ≦80%RH Temperature Relative Humidity Due to our policy of continual product development, we reserve the right to amend the specifications of all mentioned products without prior notice.

TECHNICAL SPECIFICATION: Channel 1 and 2 Characteristic Constant Voltage Mode (CV) Voltage Range Line Effect Loading Effect Noise and Ripple Recovery Time 0 to maximum rated current ≤ 1×10-4 +3mV (±10% of Rated Voltage) ≤ 1×10-4 +3mV (Output current ≤ 3A) ≤ 2×10-4 +3mV (Output current ≥ 3A) ≤ 1m Vrms (5Hz – 1 MHz) ≤ 100µsec (50% of loading effect with min. loading of 0.5A) Temperature Coefficient ≤ 300ppm/oC Constant Current Mode (CC) Current Range 0 to maximum rated current Line Effect Loading Effect ≤ 3mArms Tracking Characteristic (in Series) Line Effect Loading Effect ≤ 1×10-4 +3mV ≤ 1×10-4...

≤ 2m Vrms (5Hz – 1 MHz) PSM3 Channel 3 Characteristic Voltage Range Current Range Line Effect Loading Effect ≤ 2m Vrms (5Hz – 1 MHz) Display Accuracy Digital Display 3 Digits Display (±0.5%+2d) Insulation Chassis and Power Cord Weight(kg): Dimension(mm): www.bstcaltek.com www.htcaltek.com www.caltek.com.hk www.finestcaltek.asia Flat G, 2/F., Block 4, Golden Dragon Industrial Centre, 182-190 Tai Lin Pai Road, Kwai Chung, N.T., Hong Kong E-MAIL: TEL: (852) 2401-1222 FAX: (852) 2420-3472 kh.moc.ketlac@selas Due to our policy of continual product development, we reserve the right to amend the specifications...