Model 3706-BKPL
Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
PA-964 Rev. A / December 2007
1
Analog Backplane Extender
Introduction
The Keithley Instruments Model 3706-BKPL Analog Backplane Extender allows external
analog signal connections directly to the Model 3706 backplane. This is useful as a DMM
calibration input and for external instruments such as the Series 2600 System
SourceMeter™, function generators, and counters, as well as to daisy-chain additional Model
3700s in series.
This instruction sheet contains information about features, terminal block wiring, and
installation and removal of the Model 3706-BKPL.
WARNING
The following information is intended for qualified service
personnel. Do not make connections unless qualified to do so.
To prevent electric shock that could result in serious injury or
death, observe the following safety procedures:
•
Before removing or installing the Analog Backplane
Extender on the mainframe, make sure the mainframe is
turned off and disconnected from power.
•
Before making or breaking connections, make sure power is
removed from all external circuitry.
•
Do not connect signals that may exceed the maximum
specifications of the model or external wiring.
•
All wiring must be rated for the maximum voltage in the
system. For example, if 300V is applied to the backplane
extender, all module wiring must be rated for 300V.
Maximum Signal Levels
Input:
DMM-HI / LO, DMM-SHI / SLO, and A3-HI / LO through A6-HI / LO: 300V DC or
300V RMS (425V peak for AC waveforms) 3A, 60W, 125V between any terminal to
terminal or terminal to chassis.
Input:
AMP and AMP-LO: 3ADC or 3A RMS (4.25A peak for AC waveforms), 250V
peak between terminals or terminals to chassis.
CAUTION
The analog backplane extender is rated for connections to circuits rated
for Category I only, with transients rated less than 1500V peak. Do not
connect to CAT II, CAT III, or CAT IV circuits. Connections to circuits
higher than CAT I can cause damage to the equipment or expose the
operator to hazardous voltages.
