Keithley 6487/E Digital-Multimeter, DMM, 6487/E Data Sheet

Product codes

6487/E

W L

L M

E & S

www.keithley.com

1.888.KEITHLEY

(U.S. only)

A Greater Measure of Confidence

• Rear panel triax input. This allows the picoammeter to be used in floating operation, up to

500V . When not floating, the addition of a triax to BNC adapter allows inexpensive, easy-to-use

BNC cables to be employed, rather than more expensive triaxial cables .

• RS-232 and IEEE-488 interfaces. These interfaces make it easy to integrate the Model 6487 into

automated test and measurement systems .

• Scaled voltage analog output. This output allows the Model 6487 to transmit measurement

results to devices like DMMs, data acquisition cards, oscilloscopes, or strip chart recorders .

• Built-in Trigger Link interface. The Trigger Link interface simplifies synchronizing the Model

6487 with other instruments and voltage sources . This interface combines six independent

selectable trigger lines on a single connector for simple, direct control over all instruments

in a system .

• Display on/off switch. For research on light-sensitive components, such as measuring the dark

currents of photodiodes or I-V measurements on unpackaged semiconductors, the front panel

display can be switched off to avoid introducing light that could significantly reduce the accuracy

of the results .

• One-touch front panel design. Functions can be configured easily with the push of a button,

without complicated function menus .

a broad range of low Current applications

Wafer-level Photodiode Testing
The Model 6487 Picoammeter/Voltage Source can be paired with a calibrated light source and a

probing fixture to create a cost-effective photodiode test system . Multiple Model 6487s can be con-

nected to the DUT’s probe pads to provide photocurrent readings or, with the addition of a switch

matrix, one pico ammeter can take current measurements from multiple pads . In the first step of the

measurement process, performed in total darkness, the Model 6487 produces a voltage sweep and

then measures the resulting dark current . In the second step, a voltage bias is applied and the result-

ing photocurrent is meas ured while the light level is increased in calibrated steps . The same basic

test configuration can be used for testing positive intrinsic negative (PIN) and avalanche photodiodes

(APDs) . The 6487’s high resolution on the 10V source range provides superior sweeping and biasing

when small biases are required . The 500V source capability is necessary to bias APDs .

ordering Information

6487 Picoammeter/

Voltage source

accessories supplied

Ca-186-1b

Ground Connection

Cable, banana

to screw-lug

CaP-31

Protective shield/

Cap (3-lug)

Cs-459

safety Interlock Plug

7078-TrX-3

low Noise Triax Input

Cable, 1m (3 ft)

8607

High Voltage banana

Cable set for Voltage

source output

Photo Diode

Ammeter

source

Calibrated Light Source

Probe

Needles

Wafer

Pads

Probe Needles

6487 Picoammeter/Voltage Source

aPPlICaTIoNs
• resistance/resistivity

measurements

• beam monitoring and radiation

monitoring

• leakage current testing in

insulators, switches, relays, and

other components

• Galvanic coupling

measurements

• I-V characterization

on semiconductor and

optoelectronic devices

• fiber alignment
• Circuit test and analysis in DClf

circuits

• sensor characterization
• Capacitor leakage

6487

Picoammeter/ Voltage Source

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