Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
(440) 248-0400
www.keithley.com
Specifications are subject to change without notice.
Page 2 of 3 SPEC-3740 Rev. A / September 2007
Model 3740
32 Channel Isolated Switch Card Specifications
28 Form C relays and 4 high power Form A relays
GENERAL:
OVER-TEMPERATURE: Temperature sensor indicates over temperature.
ACTUATION TIME: Form C 4ms, Form A 10mS
RELAY TYPE: Form C Latching electromechanical, Form A nonlatching electromechanical.
RELAY DRIVE SCHEME: Direct
INTERLOCK: Backplane relays disabled when interlock connection removed.
OPERATING ENVIRONMENT:
Specified for 0ºC to 50ºC.
Specified to 70% R.H. at 35º
STORAGE ENVIRONMENT: -25ºC to 65ºC
WEIGHT: 2.5LBS
SAFETY: Conforms to European Union Directive 73/23/EEC, EN61010-1
EMC: Conforms to European Union Directive 2004/108/EC, EN61326-1
ACCESSORIES AVAILABLE:
3790-KIT50-R pin female D-sub connector kit (contains 2 female D-sub Connectors and 100 solder cup contacts)
3721-MTC-3 50 pin D-sub female to male cable, 3m
3721-MTC-1.5 50 pin D-sub female to male cable, 1.5m
3740-ST screw terminal block
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