User Manual

Model 3760

10-Channel High Current Multiplexer Card User's Manual Section 1:

Introduction

3760-900-01 Rev. A / July 2017 1-3

Common mode voltage

500 V peak

Environmental conditions

Indoor use only

Operating: 0 °C to 50 °C (32 °F to 122 °F), 70% relative humidity up to

35 °C (95 °F); derate 3% relative humidity per °C, 35 °C to 50 °C,

noncondensing

Storage: −25 °C to 65 °C (-13 °F to 149 °F)

Altitude: 0 to 2000 m (0 to 6562 feet) above sea level

Pollution degree: 2

The 3760 is a high-current multiplexer card with the maximum capabilities of 500 V, 5 A or 100 VA

switching (resistive load only). Signal levels of this magnitude may be found in applications such as

power semiconductor testing. The 3760 can also be used in monitoring currents from DC power

supplies in general purpose automatic test equipment (ATE) bench or laboratory applications. For

easy input and output wiring the 3760 is designed with quick disconnect screw terminals. Each

channel has a HI and LO connection with a common guard. Each of the ten channels consist of a

single 2 Form C relay.

Figure 1: Model 3760 simplified schematic

The card is field installable in an appropriate Keithley Series 3700A Systems Switch/Multimeter (for

instance, the 3706A) using the mainframe’s rear panel. Channel switching is accomplished in less

than 15 mS (exclusive of mainframe) and the specified relay life is greater than 10

closures (greater

than 10

closures at maximum signal levels). With the 3760’s high channel isolation (>10

Ω), it is well

insulated from cross channel noise and interference. The 3760’s high input isolation (>10

Ω) reduces

loading to a minimum.

Specifications

For the most recent instrument specifications, search for the 3760 on the Keithley Instruments

website (http://www.tek.com/keithley).