Datasheet

1.888.KEITHLEY (U.S. only)
www.keithley.com
11
SWITCHING AND CONTROL
A GREATER MEASURE OF CONFIDENCE
MULTIPLEXER CONFIGURATION: Two independent 1×30 2-pole multiplexers. Banks can be
connected together via relay creating a single 1×60 multiplexer. Banks can be isolated from the
backplane by relays. Card can be configured for 1-, 2-, and 4-wire.
CONTACT CONFIGURATION: 2 pole form A.
CONNECTOR TYPE: Two 78-pin male D-shells.
MODEL 3723-ST SCREW TERMINAL OPTION: #22 AWG typical wire size with 0.062 inch O.D.
124 conductors maximum. #16 AWG maximum wire size with 0.092 inch O.D. 36 conductor per
card maximum.
MAXIMUM SIGNAL LEVEL: 200V DC or RMS, 1A switched (1.25A carry), 15W.
COMMON MODE VOLTAGE: 300V DC or RMS between any terminal and chassis.
VOLT-HERTZ LIMIT: 8×10
7
.
CONTACT LIFE: Reed: >10
9
operations, no load. 10
7
operations @100V, 10mA.
EMR: >10
8
operations @ 5V, 10mA. 10
5
operations @ maximuum signal level.
Dual 1×30
1
Single 1×60
1, 2
Channel Resistance (end of contact life)
<1.5
W <2.0 W
Contact Potential: Differential
Single-Ended
<±6 μV
<±12 μV
<±6 μV
<±12 μV
Offset Current
<250 pA <250 pA
Isolation
Differential
10
10
W , 260 pF 10
10
W , 500 pF
Bank-Bank
10
10
W , 75 pF —
Channel-channel
10
10
W , 75 pF 10
10
W , 75 pF
Common Mode
10
10
W , 280 pF 10
9
W , 625 pF
Crosstalk Channel-channel
300kHz
<–55 dB <–55 dB
1MHz
<–50 dB <–45 dB
20MHz
<–20 dB <–20 dB
Bandwidth
20 MHz 10 MHz
TYPICAL SCANNING SPEEDS:
Switch Only
3
: Sequential scanning, single channel, immediate trigger advance: >1000 ch/s.
With Measurements Into Memory
4
:
DCV (10V range) or 2W Ohms (1k
W range): >800 ch/s.
3- or 4-Wire RTD: >450 ch/s.
4-Wire Ohms (1k
W range): >450 ch/s.
ACV (10V, 400Hz range): >800 ch/s.
GENERAL
ACTUATION TIME: <0.5ms.
RELAY TYPE: Dry reed.
RELAY DRIVE SCHEME: Direct.
RELAY DRIVE CURRENT: 10mA.
INTERLOCK: Backplane relays disabled when interlock connection 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: 3.0 lbs.
SAFETY: Conforms to European Union Directive 73/23/EEC, EN61010-1.
EMC: Conforms to European Union Directive 2004/108/EC, EN61326-1.
NOTES
1. Connections made using 3723-ST accessory.
2. 3706A mainframe with all DMM backplane relays disconnected. Maximum two card backplane relays closed.
3. Scanning script local to 3706A mainframe, within same bank, and break before make switching.
4. 3706A mainframe with autorange off, limits off, dmm.autozero=0, dmm.autodelay=0, 4½ digits (NPLC=0.006),
for ACV dmm.detectorbandwidth=300, for OHMs dmm.offsetcompensation=off. Scanning script local to main-
frame, sequential scan within same bank (2 pole) or card (4 pole), and break before make switching.
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
Output 1
HI
LO
Channel 1
HI
LO
Channel 30
Channels 2–29
Multiplexer Bank 1
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
Output 2
HI
LO
Channel 31
HI
LO
Channel 60
Channels 32–59
Multiplexer Bank 2
Analog Backplane 1
(DMM Input)
Analog Backplane 2
(DMM Sense)
Analog Backplane 3
Analog Backplane 4
Analog Backplane 5
Analog Backplane 6
Analog Backplane 1
(DMM Input)
Analog Backplane 2
(DMM Sense)
Analog Backplane 3
Analog Backplane 4
Analog Backplane 5
Analog Backplane 6
To Series 3700A Mainframe Analog Backplane
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
HI
LO
To Series 3700A Mainframe Analog Backplane
Output 1
Multiplexer Bank 1
HI
LO
Analog Backplane 1
(DMM Input)
Analog Backplane 2
(DMM Sense)
Analog Backplane 3
Analog Backplane 4
Analog Backplane 5
Analog Backplane 6
Channel 30
Single Pole
Configuration Relay
(internal control only)
Channels 2–29
Channel 1
Channel 31
Channel 61
Channel 90
Channels 62–89
Output 2
Multiplexer Bank 2
HI
LO
Analog Backplane 1
(DMM Input)
Analog Backplane 2
(DMM Sense)
Analog Backplane 3
Analog Backplane 4
Analog Backplane 5
Analog Backplane 6
Channel 60
Single Pole
Configuration Relay
(internal control only)
Channels 32–59
Channel 91
Channel 120
Channels 92–119
Two-pole mode
Single-pole mode
3723
Dual 1×30, High Speed, Multiplexer Card
60 differential channels, long life reed relays
Model 3723 specifications Model 3723 specifications