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DIGITAL MULTIMETERS & SYSTEMS

A GREATER MEASURE OF CONFIDENCE

DMM users whose applications demand exceptional resolution, accuracy,

and sensitivity combined with high throughput now have two attractive

alternatives to high priced, high end DMMs. Keithley’s 7½-digit Model 2001

and 8½-digit Model 2002 High Performance Digital Multimeters not only

deliver performance specifications usually associated with instruments that

cost thousands more, but they also offer a broad range of functions not

typically available from DMMs. The 2002 is based on the same superior

measurement technology as the 2001, and the front panels of both instru-

ments have the same look, feel, and response.

True 7½- (or 8½-) Digit Resolution

While other DMMs may claim 7½- or 8½-digit resolution, they must aver-

age multiple readings to extend their resolution. The resolution speci-

fications of the 2001 and 2002 are based on a 28-bit A/D converter that

provides the resolution needed to discern smaller changes. This higher

resolution also provides greater dynamic range, making it possible to meas-

ure from 1µV to 20V on a single range, thus avoiding range-shift errors

and delays.

Built-In Scanner (Multiplexer) Options

With the addition of a plug-in scanner card, the 2001 or 2002 becomes a

complete scan and measure system for applications involving up to ten

measurement points. The additional

resolution and measurement ranges pro-

vided by the 2002 make it an excellent

choice for production test, design verifi-

cation, and metrology applications where high accuracy is critical.

High Accuracy ACV Measurements

A patented circuit design makes the 2001 and 2002’s AC measurements several times more accurate

than competitive DMMs. In this circuit, the signal bypasses the prime error-contributing section of

conventional rms converters. This increases the accuracy at almost any voltage level, and also increas-

es sensitivity down to a guaranteed 1% of the selected range, compared to 5–10% for most other

DMMs. The result is highly accurate measurements over a broad range of inputs.

Applications involving vibration, servo, guidance, shock, and control systems often require accu-

rate low frequency ACV measurements. The 2001 and 2002 maintain very good accuracy (better

than 0.1%) down to 1Hz. The wide bandwidth of these DMMs allows for accurate measurements of

high frequency AC signals without the need for a special AC meter. Both the 2001 and 2002 feature

TRMS AC, average AC, peak AC, AC+DC, and crest factor measurement capability for a wide variety

of applications.

High Speed for High Throughput

In applications where high throughput is critical, both the 2001 and 2002 provide more than 2000

readings per second at 4½-digit resolution. At 7½ digits, the 2002 maintains full rated accuracy at

reading rates up to 44/second on DCV and ohms.

High Speed, High Precision Resistance Measurements

The Model 2002 uses a unique single-phase method for 4-wire ohms measurements. This makes it

twice as fast for a given power line cycle rate. This also eliminates errors due to changing lead resis-

tances that can result from fast test handlers. A built-in open-lead detection circuit also eliminates

many production test problems.

Fast, Flexible Triggering

Trigger latency—the delay between trigger and measurement—is often a barrier to higher throughput.

Also, variability in latency can complicate predicting measurement timing. The 2001 and 2002 trigger

is less than 2µs±1µs, which is much faster than typical system DMMs.

• True 7½- (Model 2001)

or 8½-digit (Model 2002)

resolution

• Exceptional measurement

integrity with high speed

• High speed function and range

changing

• Broad range of built-in

measurement functions

• Multiple measurement display

• Built-in 10 channel scanner

option

• GPIB interface

• HP3458A emulation mode

(Model 2002)

2001

7½-Digit High Performance Multimeter

2002

8½-Digit High Performance Multimeter

High resolution, high accuracy DMMs

Summary of content (6 pages)

PAGE 1
2001 2002 7½-Digit High Performance Multimeter 8½-Digit High Performance Multimeter • True 7½- (Model 2001) or 8½-digit (Model 2002) resolution • Exceptional measurement integrity with high speed • High speed function and range changing • Broad range of built-in measurement functions • Multiple measurement display • Built-in 10 channel scanner option • GPIB interface • HP3458A emulation mode (Model 2002) Built-In Scanner (Multiplexer) Options With the addition of a plug-in scanner card, the 2001 or 2002
PAGE 2
7½-Digit High Performance Multimeter 8½-Digit High Performance Multimeter High resolution, high accuracy DMMs Ordering Information 2001 High Performance 7½-Digit DMM with 8K Memory 2002 High Performance 8½-Digit DMM with 8K Memory 2000-SCAN 10-channel Scanner Card 2001-SCAN 10-channel Scanner Card with two highspeed channels 2001-TCSCAN 9-channel Thermocouple Scanner Card 2001/MEM1 High Performance 7½-Digit DMM with 32K Memory 2001/MEM2 High Performance 7½-Digit DMM with 128K Memory 2002/MEM1 High Perform
PAGE 3
7½-Digit High Performance Multimeter 8½-Digit High Performance Multimeter The built-in AC crest factor measurement helps ensure the accuracy of AC measurements. Other DMMs typically perform AC measurements for signals without excessive crest factor—the ratio of peak value to rms values. However, when crest factor rises, measurements may not meet specs. With a 2001 or 2002, there is no need for an oscilloscope to determine if the crest factor is acceptable—the DMM measures it directly.
PAGE 4
2001 2002 7½-Digit High Performance Multimeter 8½-Digit High Performance Multimeter 2001 Condensed Specifications DC VOLTS Model 2001 and 2002 specifications Range 200 mV 3 2 V 20 V 200 V 1000 V Full Scale ±210.00000 mV ±2.1000000 V ±21.000000 V ±210.00000 V ±1100.
PAGE 5
2001 2002 7½-Digit High Performance Multimeter 8½-Digit High Performance Multimeter 2001 Condensed Specifications (continued) AC AMPS AC AMPS NOTES 20Hz– 50Hz 0.35 + 0.015 0.3 + 0.015 0.3 + 0.015 0.3 + 0.015 0.35 + 0.015 50Hz– 200Hz 0.2 + 0.015 0.15 + 0.015 0.15 + 0.015 0.15 + 0.015 0.2 + 0.015 200Hz– 1kHz 0.4 + 0.015 0.12 + 0.015 0.12 + 0.015 0.12 + 0.015 0.3 + 0.015 1kHz– 10kHz 0.5 + 0.015 0.12 + 0.015 0.12 + 0.015 0.15 + 0.015 0.45 + 0.015 10kHz– 30kHz3 0.25 + 0.015 0.25 + 0.015 0.5 + 0.015 1.
PAGE 6
2001 2002 7½-Digit High Performance Multimeter 8½-Digit High Performance Multimeter 2002 Condensed Specifications (continued) OHMS Model 2001 and 2002 specifications Range 20 Ω 200 Ω 2 kΩ 20 kΩ 200 kΩ 2 MΩ 20 MΩ 2 200 MΩ 2 1 GΩ 2 Full Scale 21.000000 Ω 210.00000 Ω 2100.0000 kΩ 21.000000 kΩ 210.00000 kΩ 2.1000000 MΩ 21.000000 MΩ 210.00000 MΩ 1.0500000 GΩ Resolution 100 nΩ 1 µΩ 10 µΩ 100 µΩ 1 mΩ 10 mΩ 100 mΩ 1 Ω 10 Ω Current Source 1 7.2 mA 960 µA 960 µA 96 µA 9.6 µA 1.9 µA 1.4 µA 6 1.4 µA 6 1.