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Section 11: Model 3732 quad 4x28 reed relay matrix card
Series 3700A Switch and Control Cards Reference Manual
11-2
3700AS-909-01 Rev. B / December 2011
Additional features
These additional features differentiate the Model 3732 card from other Series 3700A switching cards:
•
Bank configuration relays mounted on the Model 3732 card allow you to automate bank
connections, and the two-pole mode enables automatic channel pairing for differential (2-wire)
measurements.
•
Analog backplane relays can be used to connect rows to the Series 3700 mainframe backplane
for larger matrix configurations that use multiple Model 3732 cards.
•
The Model 3732 card has optimized reed relays that minimize switching errors and allow greater
signal voltage and current dynamic range in automated test applications that require long life and
fast actuation times.
•
The Model 3732 card has two 78-pin D-sub connectors, and two optional screw terminal
assemblies are available (Models 3732-ST-C and 3732-ST-R).
Accessories for Model 3732
Available accessories for the Keithley Instruments Model 3732 4x28 Ultra-High Density Reed Relay
Matrix Card are listed in the table below.
Model 3732 available accessories
Accessory model
number
Description
Model 3732-ST-C
Column expansion screw terminal assembly for quad 4x28, dual 5x56, and single 4x112 matrix
configurations
Model 3732-ST-R
Row expansion screw terminal assembly for single 16x28 or dual 8x28 matrix configurations
Model 3732-MTC-1.5
78-pin D-sub female-to-male cable, 5 ft (1.5 m)
Model 3732-MTC-3
78-pin D-sub female-to-male cable, 10 ft (3 m)
Model 3791-CIT
Contact insertion and extraction tool
Model 3791-KIT78-R
78-pin, female D-sub connector kit; contains two female D-sub connectors and 156 solder-cup
contacts
Maximum power usage with Model 3732 cards
Model 3732 cards are capable of switching many relays at once, which can use a substantial amount
of system power. Because there is a limited amount of power available for switching relays, you must
ensure that maximum available power is not exceeded.
Refer to the Model 3732 datasheet for model-specific power consumption and quiescent power
information. For a more detailed explanation of power usage, budgeting, and calculation, see the
"Series 3700A Module Schematics and Connections" section in the Series 3700A Reference Manual
(part number 3700AS-900-01). Both of these documents are available at www.keithley.com.