Data Sheet Programmable DC Power Supplies 9120A Series Features and Benefits n Excellent n Fast display resolution transient response time (< 150 s) n SCPI compatible n Communicate via USB Interface, using included USB to TTL serial converter cable The 9120A series are laboratory grade, programmable DC Power Supplies providing great performance and features not found in other supplies in this price category. The power supplies were designed to meet the needs of today's applications in R&D design verification, production testing or university labs that require clean and reliable power, high resolution/accuracy and fast transient response time. Front Panel Operation The numeric keys and rotary knob provide a convenient interface for setting output levels quickly and precisely. Voltage and current can be set to a maximum resolution of 0.5 mV (2 mV for 9124) and 0.1 mA respectively. Up to 50 parameters can be stored and recalled from internal memory. Model 9120A 9121A Output Voltage 0 - 32 V Output Current 0-3A Technical data subject to change (c) B&K Precision Corp. 2021 Extra Features The 9120 series' digital port offers a variety of configurations. The port can operate in digital I/O, external trigger and DFI/RI (Discrete Fault Indicator/Remote Inhibit) mode. The RI feature can be used for turning several power supplies On/Off simultaneously. External triggering can be used in combination with List mode. The included application software supports front panel emulation and allows users to generate simple test sequences without the need to write source code. Additionally, the power supply comes with a built-in 51/2 digit DVM and high resolution milliohm meter supporting 4 wire measurements. 9122A 9123A 9124 0 - 20 V 0 - 60 V 0 - 30 V 0 - 72 V 0-5A 0 - 2.5 A 0-5A 0 - 1.2 A www.bkprecision.com n GPIB interface (model 9123A only) n Closed case calibration n Compact size for bench use or rack mountable (2U x 1/2U size) n DVM and Milliohm Meter n Discrete Fault Indicator/Remote Inhibit (DFI/RI). Useful for turning multiple power supplies On/Off simultaneously n Application Software for front panel emulation and simple test sequence generation included n Sheathed banana plug terminals for safety Remote Interface The power supplies can be remotely controlled from any PC through a USB (virtual com) interface, allowing the user to program and monitor all parameters through easy to use SCPI commands. The power supplies come with a USB to TTL serial converter. Additionally, model 9123A can be controlled via GPIB interface and includes a GPIB to TTL conversion adapter cable. Programmable DC Power Supplies 9120A Series Front Panel Encoder knob for quick analog style control Bright, dual LED displays The 9120 series uses 4mm sheathed banana jacks that accept sheathed or shrouded banana plugs and meet the latest international safety standards. Numeric keys for direct entry of voltage and current values Output ON/OFF switch 4mm sheathed safety banana jacks Rear Panel Thermostatically controlled cooling fan DVM and m meter Remote Sense and digital port functionality 2 User accessible fuse Serial interface connector for USB communication. Model 9123A also supports control via GPIB interface. www.bkprecision.com Programmable DC Power Supplies 9120A Series Specifications Model 9120A 9121A Output Ratings ( 0 C - 40 C) 0 - 32 V 0-3A Load Regulation (% of output + offset) Line Regulation (% of output + offset) 9122A 9123A 0 - 20 V 0 - 60 V 0 - 30 V 0 - 72 V 0-5A 0 - 2.5 A 0-5A 0 - 1.2 A < 0.01% + 2 mV1 < 0.01% + 2 mV1 < 0.01% + 2 mV1 < 0.01% + 2 mV1 < 0.05% + 2 mA < 0.05% + 2 mA < 0.05% + 3 mA < 0.05% + 3 mA 1 1 1 < 0.01% + 2 mV < 0.01% + 1 mV < 0.01% + 1 mV1 < 0.05% + 0.1 mA 0.05% + 0.05 mA 0.05% + 0.1 mA 0.05% + 0.05 mA 0.5 mV 1 mV 0.5 mV 2 mV < 0.01% + 1 mV Programming resolution Readback / Meter resolution 9124 0.1 mA 0.1 mA 0.1 mA 0.02 mA 0.1 mV 0.5 mV 0.1 mV 0.5 mV 0.05 mA 0.05 mA 0.05 mA 0.01 mA 1 mV 0.5 mV 2 mV 0.1 mV 0.01 mA Front panel setting resolution 0.5 mV 0.1 mA 0.1 mA 0.1 mA 0.02 mA Programming accuracy, 12 months (25 C 5 C) (% of output + offset) < 0.03% + 3 mV 0.03% + 6 mV 0.03% + 3 mV 0.03% + 6 mV < 0.05% +2 mA 0.05% + 1.5 mA 0.05% + 2.5 mA 0.05% + 1 mA Readback/ Meter accuracy 12 months (25 C 5 C) (% of output+offset) < 0.02% + 3 mV 0.02% + 6 mV 0.02% + 2.5 mV 0.02% + 5 mV < 0.05% + 2 mA 0.05% + 1.5 mA 0.05% + 2.5 mA 0.05% + 1 mA Ripple & Noise (20 Hz - 20 MHz) Temperature coefficient, (0 C - 40 C) (% of output + offset) Readback temperature coefficient, (% of output + offset) Transient Response 4 mVp-p 3 mVp-p 5 mVp-p 4 mVp-p 5 mVp-p 3 mArms 3 mArms 3 mArms 4 mArms 3 mArms < 0.02% + 3 mV 0.02% + 6 mV 0.02% + 3 mV 0.02% + 5 mV < 0.05% + 2 mA < 0.05% + 1 mA < 0.05% + 2 mA < 0.05% + 0.5 mA < 0.02% + 3 mV 0.02% + 6 mV 0.02% + 3 mV 0.02% + 5 mV < 0.05% + 2 mA 0.05% + 1 mA 0.05% + 2 mA 0.05% + 0.5 mA < 150 s for output to recover to within 75 mV following a change from 100 mA to 1 A 0 - 12 V range: 0.02% + 2 mV DVM Accuracy 0 - 40 V range: 0.02% + 3 mV 0 - 12 V range: 0.1 mV DVM Resolution 0 - 40 V range: 1 mV 0.6% (for Voltage and Current 11% of full scale) Milliohm Meter Accuracy 1.8% (for Voltage and Current 4% of full scale) State Storage Memory 50 user configurable memory locations Operating Temperature 0 C to 40 C, < 75% R.H. Storage Temperature -20 C to 70 C, < 85% R.H AC Input Weight Dimensions (W x H x D) 115 V / 220 VAC 10%, 47 Hz to 63 Hz 19.8 lbs (9 kg) 21.2 lbs (9.6 kg) 19.8 lbs (9 kg) 8.45" x 3.8" x 13.9" (214 x 88.2 x 354.6 mm) Warranty 3 Years Included Accessories User manual, power line cord, USB to TTL serial converter IT-E132B, and software installation disk. Model 9123A also includes IT-E135 GPIB to TTL conversion adapter cable Optional Accerssories IT-E151 rack mount kit "1" = while using remote sense 3 v020421 www.bkprecision.com