Breadboard Module 13
34980A User’s Guide 321
Operating Considerations
Electrical Specifications
The specifications below were derived from the individual components
used to provide the relay drive and digital I/O functions:
Electrical Specifications for the 34959A Breadboard Module
Environmental Voltage Limits
See “Module Considerations” on page 116 for detailed environmental
operating conditions for the 34980A mainframe and its installed modules.
That guidance sets a maximum voltage rating for the Analog Buses of 300V
in pollution degree 1 (dry) conditions, and derates the maximum voltage
to 100V for pollution degree 2 (possible condensation) conditions.
This guidance applies to any circuitry installed in the 34959A module.
Module Cooling
The maximum recommended power consumption/dissipation for the
breadboard module and its installed circuitry is 6 watts, resulting in a
5
o
C rise in temperature.
Specification Test Conditions Minimum Typical Maximum
Total Power Consumption
(by customer-installed circuits)
all connections total 6W
Connector P101 (Relay Drive)
Current Limit
(per relay drive pin)
all outputs driven
simultaneously
150 mA
On Resistance (to chassis) @ 100 mA output
@ 400 mA output
4.2W
6.5W
5.7W
8.0W
Input Voltage 42V
Leakage Current @ max. input voltage 8 3A
Connector P102 (Digital I/O)
High level input voltage 2V 5.5V
Low level input voltage 0V 0.8V
High level output voltage @ 4 mA output
@ 500 3A output
2.4V
3.0V
Low level output voltage @ 8 mA output 0.4V
NOTE
To allow adequate cooling of the breadboard module, ensure that your
circuit layout does not impede air flow.
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