TRICONEX 3721

Description

TRICONEX 3721
MULTIPLEXER CONFIGURATION: Two independent 1×20
2-pole multiplexers. Banks can be connected together via
relay creating a single 1×40 multiplexer. Banks can be isolated from the backplane by relays. Card can be configured
for common side Ohms measurement via backplane relays.
Channel 41–42: Multiplex one of two 2-pole current signals
into DMM.
CONTACT CONFIGURATION: 2 pole form A.
CONNECTOR TYPE: Two 50 pin male D-shells. Removable
screw terminal option.
MAXIMUM SIGNAL LEVEL: Channels 1–40: 300V DC or RMS,
2A switched (3A carry), 60W, 125VA maximum. Channels
41–42: 60V DC or 30V RMS, 3A switched, 60W, 125VA maximum. Fused 3A, 250V RMS.
COMMON MODE VOLTAGE: Channels 1–40: 300V DC or RMS
between any terminal and chassis.
VOLT-HERTZ LIMIT: 8×107
.
CONTACT LIFE: >105
operations at maximum signal level. >108
operations no load.
1
Typical Scanning Speeds :
Switch Only 4: Sequential scanning, single channel, immediate trigger advance: >120 ch/s.
With Measurements Into Memory 5:
DCV (10V range) or 2W Ohms (1kW range): >110 ch/s
Thermocouple: >110 ch/s.
3- or 4-Wire RTD: >100 ch/s.
4-Wire Ohms (1kW range): >100 ch/s.
ACV (10V, 400Hz range) or ACI (1A, 400Hz range): >110 ch/s.
Dual
1×20 3
Single
1×40 2, 3
Channel Resistance
(end of contact life) <1.0 W <1.5 W Contact Potential (differential) <±1 µV <±3 µV Offset Current <±250 pA <±250 pA Isolation Differential 109 W, 280 pF 109 W, 530 pF Bank-Bank 1011 W, 60 pF — Channel-channel 109 W, 50 pF 109 W, 50 pF Common Mode 109 W, 180 pF 109 W, 480 pF Crosstalk Channel-channel 300kHz <–60 dB <–60 dB 1MHz <–50 dB <–50 dB 20MHz: <–25 dB <–15 dB Bandwidth 28 MHz 9 MHz GENERAL ACTUATION TIME: 4ms. TEMPERATURE ACCURACY using Automatic CJC with 3721-ST accessory: 1°C for J, K, T, and E types (see mainframe specification for details). RELAY TYPE: Latching electromechanical. RELAY DRIVE SCHEME: Direct. 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: 2.25 lbs. SAFETY: Conforms to European Union Directive 73/23/EEC, EN61010-1. EMC: Conforms to European Union Directive 2004/108/EC, EN61326-1. Note s 1. Open detector enabled during thermocouple measurements. Minimum signal level 10mV, 10µA. 2. 3706A mainframe with all DMM backplane relays disconnected. Maximum two card backplane relays closed. 3. Connections made using 3721-ST accessory. 4. Scanning script local to 3706A mainframe, within same bank, and break before make switching. 5. 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, dmm. opendetector=off. Scanning script local to mainframe, sequential scan within same bank (2 pole) or card (4 pole), and break before make switching

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