Datasheet

Datasheet
TEK.COM30
The 7702 plug-in module offers 40 channels of 2-pole or 20
channels of 4-pole multiplexer switching that can be configured
as two independent banks of multiplexers. The 7702 provides two
additional protected channels for current measurements. It is ideal
for RTD, thermistor, and thermocouple temperature applications.
Key Features
• 40 channels for generalpurpose measurements, plus 2
channels to measure current
• Two- or four-wire measurement
• Oversize screw terminal connection blocks are standard for
easier connection
• 300 V, 1 A capacity for voltage channels; 60 W, 125 VA
• 3 A capacity for current channels
• Relay closures stored in onboard memory
Series 7700 Plug-In Switch Modules
Channel 1
HI
LO
Channel 20
HI
LO
(Channels 2–19)
Channel 21
HI
LO
Channel 40
HI
LO
(Channels 22–39)
Channel 41
HI
LO
Channel 42
HI
LO
AMPS
HI
LO
Sense
HI
LO
Input
Channel 43
2-Pole (Open)
4-Pole (Closed)
(see Note)
3A
3A
To Instrument
Backplane
Channel 45
(see Note)
Backplane
isolation
Channel 44
(see Note)
Backplane
isolation
NOTE: Channels 43–45 in this schematic refer to
the designations used for control and not
actual available channels.
For more information, refer to the
ROUTe:MULTiple command sectionin the
Instrument User’s Manual.
Channels 44 and 45 can be individually
controlled using ROUTe:MULTiple if the
module is not to be connected to the
internal DMM.
Card Sense
HI
LO
Card Input
HI
LO
7702 40-channel, Differential Multiplexer Module
with Screw Terminals
Datasheet
Specifications
Capabilities
Channels 1-40 Multiplex one of 40 2-pole or one of 20 4-pole signals
into DMM.
Channels 41-42 Multiplex one of 2 2-pole current signals into DMM.
Inputs
Maximum Signal Level
Channels (1-40) 300 V DC or rms, 1 A switched, 60 W, 125 VA
maximum.
Channels (41-42) 60 V DC or 30 V rms, 3 A switched, 60 W, 125 VA
maximum.
Contact Life (typ.) >10
5
operations at max. signal level.
>10
8
operations no load
1
.
1. Minimum signal level 10 mV, 10 μA.
Contact Resistance <1 Ω at end of contact life.
Contact Potential <±500 nV typical per contact, 1 μV max.
<±500 nV typical per contact pair, 1 μV max.
Offset Current <100pA.
Connector Type Screw terminal, #20 AWG wire size.
Isolation Between Any Two Terminals
>10
10
Ω, <100 pF.
Isolation Between Any Terminal and Earth
>10
9
Ω, <200 pF.
Cross Talk (10 MHz, 50 Ω Load)
<–40 dB.
Insertion Loss (50 Ω Source, 50 Ω Load)
<0.1 dB below 1 MHz. <3 dB below 2 MHz.
Common Mode Voltage
300V between any terminal and chassis.
General
40 Channels 40 channels of 2-pole relay input. All channels
configurable to 4-pole.
2 Channels 2 channels of current only input.
Relay Type Latching electromechanical.
Actuation Time <3 ms.
Environmental Operating Environment: Specified for 0° to 50°C.
Specified to 80% R.H. at 35°C.
Storage Environment: –25° to 65°C.
EMC: Conforms to European Union EMC Directive.
Safety: Conforms to European Union Low Voltage
Directive
RoHS: Conforms to European Union RoHS Directive
Warranty: 1 year
Weight 0.5 kg (1.1 lb).
Supplied Accessories
CC-92-1 Set of 20 Cable Ties
TL-23 Screwdriver
Available Services
7702-3Y-EW 1-year factory warranty extended to 3 years from date
of shipment
Ordering Information
7702 40-channel Differential Multiplexer Module with Screw
Terminals