9123A - B&K PRECISION CORPORATION

B&K Precision®models 9120A, 9121A,

9122A, 9123A and 9124 are laboratory grade

Programmable DC Power Supplies providing

great performance and features not found in

other supplies in this price category. The 9120

series are 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 and

accuracy and fast transient response time.

■Excellent display resolution

■Low ripple and low noise

■Outstanding temperature stability

■Fast transient response time (<150 µs)

■SCPI compatible

■Front and Rear Output Terminals

■Closed case calibration

■Compact size for bench use or rack

mountable (2U x 1/2U size)

■List mode operation for increased

throughput. Download and execute

command sequences from non-volatile

memory

9124

4mm sheathed

safety banana jacks

Output ON/OFF

switch

Encoder knob for quick

analog style control

Numeric keys for direct entry of

voltage and current values

High resolution display

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 0.5mV (2mV

for 9124) and 0.1mA respectively. Up to 50

parameters can be stored and recalled from

internal memory.

Data Sheet

Technical data subject to change

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Single Output Programmable DC Power Supplies

Models 9120A, 9121A, 9122A, 9123A & 9124

Models 912 0A 9121A 9122A 9123 A 912 4

Output Voltage 0-32V 0-20V 0-60V 0-30V 0-72V

Output Current 0-3A 0-5A 0-2.5A 0-5A 0-1.2A

Output Ratings 0 ~32V 0 ~20V 0 ~60V 0 ~30V 0~72V

( 0 °C~40 °C) 0~3A 0~5A 0~2.5A 0~5A 0~1.2A

Load Regulation <0.01%+2mV <0.01%+2mV <0.01%+2mV <0.01%+2mV

±(%of output+offset) <0.05%+1mA <0.05%+0.5mA <0.05%+1.5mA <0.05%+0.3mA

Line Regulation <0.01%+1mV <0.01%+2mV <0.01%+1mV <0.01%+1mV

±(%of output+offset) <0.05%+0.1mA ≤0.05%+0.05mA ≤0.05%+0.1mA ≤0.05%+0.05mA

Programming resolution 0.5mV 1mV 0.5mV 2mV

0.1mA 0.1mA 0.1mA 0.02mA

Readback/ Meter resolution 0.1mV 0.1mV 0.5mV 0.1mV 0.5mV

0.01mA 0.05mA 0.05mA 0.05mA 0.01mA

Front panel 0.5mV 1mV 0.5mV 2mV

setting resolution 0.1mA 0.1mA 0.1mA 0.02mA

Programming accuracy, <0.03%+3mV ≤0.03%+6mV ≤0.03%+3mV ≤0.03%+6mV

12months (25 °C ± 5 °C) <0.05%+2mA ≤0.05%+1.5mA ≤0.05%+2.5mA ≤0.05%+1mA

±(%of output+offset)

Readback/ Meter accuracy <0.02%+3mV ≤0.02%+6mV ≤0.02%+2.5mV ≤0.02%+5mV

12months (25 °C ± 5 °C) <0.05%+2mA ≤0.05%+1.5mA ≤0.05%+2.5mA ≤0.05%+1mA

±(%of output+offset)

Ripple & Noise ≤4mVp-p ≤3mVp-p ≤5mVp-p ≤4mVp-p ≤5mVp-p

(20Hz ~20MHz) ≤3mArms ≤3mArms ≤3mArms ≤4mArms ≤3mArms

Temperature coefficient, <0.02%+3mV ≤0.02%+6mV ≤0.02%+3mV ≤0.02%+5mV

(0 °C~40 °C) <0.05%+2mA <0.05%+1mA <0.05%+2mA <0.05%+0.5mA

±(% of output+offset)

Readback temperature <0.02%+3mV ≤0.02%+6mV ≤0.02%+3mV ≤0.02%+5mV

coefficient, <0.05%+2mA ≤0.05%+1mA ≤0.05%+2mA ≤0.05%+0.5mA

±(% of output+offset)

Transient Response < 150 µs for output to recover to within 75 mV following a change from 100 mA to 1 A

DVM Accuracy 0~12V range: 0.02%+2mV

0~40V range: 0.02%+3mV

DVM Resolution 0~12V range: 0.1mV

0~40V range: 1mV

Milliohm Meter Accuracy 0.1% (for Voltage and Current ≥10% of full scale)

0.3% (for Voltage and Current ≥3% of full scale)

State Storage Memory 50 user configurable memory locations

Operating Temperature 0 to 40 °C, <75% R.H.

Storage Temperature -20 to 70 °C, <85% R.H

AC Input 115V/220VAC ± 10%, 47 to 63Hz

Weight 19.8 lbs, (9 kg) 21.2 lbs, (9.6 kg) 19.8 lbs, (9 kg)

Dimensions 8.45in(W) x 3.8in(H) x 13.9in(D)

214.5mm(W) x 88.2mm (H) x 354.6mm (D)

DVM and mΩ

meter User accessible fuse

Temperature controlled

cooling fan

Serial interface connector for RS232 or

USB communication.

Model 9123A also supports control via

GPIB interface.

Remote Sense and digital

port functionality

The 9120 series uses 4mm sheathed banana

jacks that accept sheathed or shrouded banana

plugs and meet the latest international safety

standards.

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.

Remote Interface

The power supplies can be remotely controlled

from any PC with USB or RS232 interface,

allowing the user to program and monitor all

parameters through easy to use SCPI commands.

The power supplies come with a RS232 to TTL

serial converter cable and a USB to TTL serial

converter cable. Additionally, model 9123A can

be controlled via GPIB interface and includes a

GPIB to TTL conversion adapter cable.

9120A 9121A 9122A 9123A 9124

Standard Accessories: User manual, power line cord, IT-E131 RS232 to TTL serial converter cable, IT-E132 USB to TTL serial converter

cable, and software installation disk. Model 9123A also includes IT-E135 GPIB to TTL conversion adapter cable.

Optional Accessories: IT-E151 rack mount kit.

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Single Output Programmable DC Power Supplies

Models 9120A, 9121A, 9122A, 9123A & 9124

Specifications models

Three-Year Warranty

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