Datasheet

www.keithley.com
1.888.KEITHLEY
(U.S. only)
18
SWITCHING AND CONTROL
A GREATER MEASURE OF CONFIDENCE
3731
6×16 High Speed, Reed Relay, Matrix Card
96 two-pole crosspoints with column expansion relays
96 Two-Pole Crosspoints with
Column Expansion Relays
MATRIX CONFIGURATION: 6 row by 16 column matrix.
Columns can be expanded using the backplane or isolated
by relays.
CONTACT CONFIGURATION: 2-pole form A.
CONNECTOR TYPE: Two 50-pin male D-shells.
MODEL 3731-ST SCREW TERMINAL OPTION:
Typical wire size: #22 AWG with .062 inch O.D.;
88 conductors maximum
Maximum wire size: #16 AWG with .092 inch O.D.;
44 conductors per card maximum.
MAXIMUM SIGNAL LEVEL: 200V DC or peak AC, 1A switched
(2A carry), 10W, 10VA.
COMMON MODE VOLTAGE: 200V DC or peak AC between any
signal path to a signal path or ground.
VOLT-HERTZ LIMIT: 8×10
7
.
CONTACT LIFE:
Reed: >10
9
operations no load. >8×10
6
operations @ 100V,
10mA.
EMR (Backplane): >10
8
operations @ 5V, 10mA and 10
5
operations @ maximum signal level.
6×16
1, 2
Channel Resistance (end of contact life)
<1.5
W
Contact Potential (differential)
<±80 μV
Offset Current
<±500 pA
Isolation
Differential
3×10
9
W , 300 pF
Channel-channel
3×10
9
W , 100 pF
Common Mode
3×10
9
W , 150 pF
Crosstalk Channel-channel
300kHz
<–60 dB
1MHz
<–50 dB
15MHz
<–20 dB
Bandwidth
19 MHz
GENERAL
ACTUATION TIME: 0.5ms.
RELAY TYPE: Reed.
RELAY DRIVE SCHEME: Direct drive.
INTERLOCK: Backplane relays disabled when terminal
assembly is removed.
OPERATING ENVIRONMENT: Specified for 0° to 50°C.
Specified to 70% R.H. at 35°C.
STORAGE ENVIRONMENT: –25° to 65°C.
WEIGHT: 2.2 lbs.
SAFETY: Compliant with European Union Low Voltage
Directive
EMC: Compliant with European Union EMC Directive
2004/108/EC, EN61326-1.
NOTES
1. Connections made using 3731-ST.
2. 3706A mainframe with all DMM backplane relays disconnected.
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
Analog Backplane 1
(DMM Input)
Analog Backplane 2
(DMM Sense)
Analog Backplane 3
Analog Backplane 4
Analog Backplane 5
Analog Backplane 6
16151413121110987654321
1
2
3
4
5
6
Rows
Columns
Matrix Crosspoint
Relay Detail
HI
LO
HI
LO
Model 3731 specifications Model 3731 specifications