Keithley 3730 User Manual

Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
Specifications are subject to change without notice.
SPEC-3720 Rev. A / September 2007 Page 1 of 3
Model 3720
Dual 1x30 Multiplexer Specification
60 differential channels, automatic CJC w/3720-ST accessory
MULTIPLEXER CONFIGURATION: Two independent 1x 30 2-pole Multiplexers. Banks can be isolated from the
backplane by relays. Card can be configured for 2 and 4 wire.
CONTACT CONFIGURATION: 2 pole form A.
CONNECTOR TYPE: Two 78 pin male D-shells.
Model 3720-ST screw terminal option:
#22AWG typical wire size with .062 inch O.D 124 conductors maximum. 16 AWG maximum wire size with .092
inch O.D. 36 conductor per card maximum.
MAXIMUM SIGNAL LEVEL:
Channels (1-60): 300V DC or RMS, 1A switched (2A carry), 60W, 125VA.
COMMON MODE VOLTAGE: 300V DC or RMS between any terminal and chassis.
VOLT-HERTZ LIMIT: 8x10
7
CONTACT LIFE: > 10
5
operations at max signal level.
> 10
8
operations no load.
1
Dual 1x30
3
Single 1x60
2, 3
Channel Resistance
(end of contact life)
<1.0 <1.5
Contact Potential
(differential)
<± 1V <± 3V
Offset Current <±250pA <±250pA
Isolation
Differential 10
9
,250pF 10
9
,450pF
Bank-Bank 10
10
,75pF 
CH –CH 10
9
,75pF 10
9
,75pF
Common mode 10
9
,200pF 10
9
,400pF
Crosstalk CH-CH
300KHz:
1MHz:
20MHz:
<-60dB
<-50dB
<-25dB
<-55dB
<-50dB
<-20dB
Bandwidth 30MHz 10MHz
1
Open detector enabled during thermocouple measurements. Minimum signal level 10mV,10uA.
2
3706 mainframe with all DMM backplane relays disconnected. Maximum two card backplane relays closed.
3
Connections made using 3720-ST accessory

Keithley 3730 Specifications

General

Brand	Keithley
Model	3730
Category	Multimeter
Language	English