BK PRECISION 9120A, 9121A, 9122A, 9123A User Manual

Data Sheet

Single Output
Programmable

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

Single Output Programmable
DC Power Supplies

DC Power Supplies

Models 9120A, 9121A, 9122A,

9123A & 9124

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 (<20ms)

■ 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

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.

Selection Char t

9120A 9121A 9122A 9123A 9124

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

High resolution display

9123A

models

Encoder knob for quick
analog style control

B&K Precision Corporation

22820 SaviRanch Parkway, Yorba Linda,CA 92887

Tel: [phone],Fax: [phone]

www.bkprecision.com

Numeric keys for direct
entry of voltage and current
values

Output ON/OFF

switch

Specifications subjectto changewithout notice

4mm sheathed

safety banana jacks

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. A USB to serial converter
cable is available as option. Additionally, model
9123A can be controlled via GPIB interface and
includes a GPIB to TTL conversion adapter cable.

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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.

Specifications

models

9120A 9121A 9122A 9123A 9124

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

oad Regulation <0.01%+2mV <0.01%+2mV <0.01%+2mV <0.01%+2mV

L

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

±

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

L

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

±
Programming resolution 0.1mV 0.5mV 0.1mV 0.1mV

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

ront panel 0.5mV 0.1mV 0.5mV 2mV

F

etting resolution 0.1mA 0.1mA 0.1mA 0.1mA

s
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

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

1

(%of output+offset)

±

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

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

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

T

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

DVM Resolution 0~12V range: 0.1mV

Milliohm Meter Accuracy 0.1% (for Voltage and Current ≥ 10% 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
Power Requirements 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)

0

Accessories

Supplied: User manual, line cord, RS232 communication cable, Software Installation disk. Model 9123A also includes GPIB to TTL Serial

Converter cable IT-E135

Optional: IT-E132 USB to TTL Serial Converter cable , IT-E151 rack mount kit,TL 5A (5A test leads), TL 30 (30A test leads), TLPS (Power

supply test lead kit)

0.1mA 0.1mA 0.1mA 0.05mA

.01mA 0.05mA 0.05mA 0.05mA 0.01mA

0~40V range: 0.02%+3mV

0~40V range: 1mV

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

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

One Year Warranty

Temperature controlled

cooling fan

DVM and
mΩ meter

User accessible
fuse

The 9120 series uses 4mm sheathed
banana jacks that accept sheathed or
shrouded banana plugs and meet the
latest international safety standards.

Remote Sense and digital
port functionality

www.bkprecision.com Models 9120A, 9121A, 9122A, 9123A & 9124

Serial interface connector for
RS232 or USB communication.
(USB communication cable is
optional). Model 9123A also sup­ports control via GPIB interface.