www.keithley.com

1.888.KEITHLEY (U.S. only)

A Greater Measure of Confidence

The Models 2303/2304a perform a continu-

ous integration to make peak, average, and

baseline measurements on complex load

current waveforms. Integration times can be

programmed with 33.3µs resolution.

Trigger

Level

33.3

µs is the

narrowest (shortest)

time interval

High

Low

Average

Low

High

Average

I= i dt

i

t

fast Measurements for

Power Consumption analysis

As manufacturers of portable devices strive

to extend battery life and the length of time

between recharges, power consumption has

become an important performance indicator.

Therefore, in production testing, accurate peak

power and average power measurements are criti-

cal. These measurements are complicated by the

fact that wireless telecommunication devices draw

full load current in short pulses. The Models

2303/2304A’s pulse readback measurement mode

makes it possible to capture peak and average

values on pulses as short as 60µs. This allows the

power supply to power a device-under-test and

determine its current consumption to qualify the

device for its specified power consumption.

In addition to making measurements on short

pulses, the 2303/2304A power supplies can

measure a current pulse peak or a current pulse

train that is as long as 833ms. For random pulse

trains that have periods longer than 833ms, the

power supplies have a special long integration

mode that can make an average current meas-

urement on up to 60s of data. To capture low

current pulses from very low power devices, the

Model 2303-PJ provides pulse measurement on

both the 5A and 500mA ranges.

accurate low Current Measurements

The Models 2303/2304A are well-suited for

making fast, accurate measurements of sleep and

standby mode currents because they are based on

Keithley’s expertise in low current measurement

technologies. With 100nA resolution, the power

supplies offer the precision needed to monitor

the low sleep mode currents in today’s products

and in future products. They can also measure

these low currents with 0.2% basic accuracy.

High Current sinking Capacity

Keithley’s power supplies can act as an electron-

ic load and sink as much as 3A (Model 2304A)

and 2A (Model 2303), so they can simulate a

discharged rechargeable battery. Therefore,

they can be used to verify the performance of a

portable device’s charger. The power supplies’

current dissipation capacity allows them to test

even high-current fast chargers.

Independent Digital Voltmeter Inputs

While many programmable power supplies offer

output readback capabilities, Keithley’s power

supplies are the only instruments available that

also offer a set of DVM inputs. These inputs allow

the Model 2304A to measure signals from 0 to

+20V (0 to +15V for the Model 2303) anywhere

in the test system with the same rated accuracy

as the voltage readback . The DVM and the power

source can operate simultaneously. For many

applications, the power supplies’ built-in DVM

eliminates the expense and space that a separate

voltage measurement instrument would require.

remote Display option

If the Model 2303 or 2304A must be mounted

in a location in which the display is not readily

visible, an optional Model 2304-DISP Display

Module can be mounted at a more convenient

point, then plugged into the power supply unit.

The display module also includes all instrument

controls, so that the power supply can be oper-

ated remotely from the more accessible location.

ordering Information

2304a

High speed Precision

readback Power

supply (100W)

2303

High speed Precision

readback Power

supply (45W)

2303-PJ

High speed Precision

readback Power supply

(45W, 500ma range

replaces 5ma range)

accessories supplied

user and service manuals,

Cs-846 output connectors

mating terminal

aCCEssorIEs aVaIlablE

2304-DISP

Remote Display

CS-846

Mating Output Connector

CablEs

7007-1

Shielded IEEE-488 Cable, 1m (3.3 ft)

7007-2

Shielded IEEE-488 Cable, 2m (6.6 ft)

SC-182

Low-Inductance Coaxial Cable (42nH/ft)

raCK MouNT KITs

4288-1

Single Fixed Rack Mount Kit

4288-2

Dual Fixed Rack Mount Kit

IEEE-488 INTErfaCEs

KPCI-488LPA

IEEE-488 Interface/Controller for the PCI Bus

KUSB-488B

IEEE-488 USB-to-GPIB Interface Adapter

sErVICEs aVaIlablE

2303-3Y-EW

1-year factory warranty extended to 3 years

from date of shipment

2303-PJ-3Y-EW

1-year factory warranty extended to 3 years

from date of shipment

2304A-3Y-EW

1-year factory warranty extended to 3 years

from date of shipment

C/2303-3Y-ISO

3 (ISO-17025 accredited) calibrations within 3

years of purchase for Models 2303, 2303-PJ*

C/2304A-3Y-ISO 3 (ISO-17025 accredited) calibrations within 3

years of purchase for Model 2304A*

*Not available in all countries

Model 2303/2304a block Diagram showing

DC DVM measurement capability

DVM

+

-

+

-

Vout

Vin

0–20V DC

2303, 2304a

High Speed Power Supplies