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2 L4400 User’s Guide
1 Introduction to the L4400 Series LXI Instruments
Instrument Considerations
This section lists important items and actions that can affect the operation of
your modules.
Environmental Operating Conditions
The L4400 Series LXI modules are designed to operate in a temperature
range of 0 °C to +55 °C with non-condensing humidity. The maximum
humidity is 80% at 40 °C or higher. Do not use in locations where conductive
dust or electrolytic salt dust may be present.
The modules should be operated in an indoor environment where
temperature and humidity are controlled. Condensation can pose a potential
shock hazard. Condensation can occur when the modules are moved from a
cold to a warm environment, or if the temperature and/or humidity of the
environment changes quickly.
The following table shows maximum voltage ratings for each module.
If conditions change, ensure that condensation has evaporated and the
instrument has thermally stabilized until pollution degree 1 conditions are
restored before turning on power to the equipment.
Table 1-1. L4400 Series LXI Instrument Voltage Ratings.
Instrument
Pollution Degree 1 Specifications Pollution Degree 2 Specifications
L4421A 40 channels, 300V rms or DC, 1A,
60 VA/channel
40 channels, 100V rms or DC, 1A,
60 VA/channel
L4433A Dual/quad 4x8 matrix, 150 Vpeak,
0.5A, 10 VA/channel
Dual/quad 4x8 matrix, 100 Vpeak,
0.5 A, 10 VA per channel
L4437A
28 channels, 300 V rms or DC, 1A,
60 VA per channel
4 channels, 250 V rms or 30 VDC,
5A, 150 VA per channel
28 channels, 100 V rms or DC, 1A,
60 VA per channel
4 channels, 100 V rms or 30 VDC,
5A, 150 VA per channel
L4445A See Chapter 7 - L4445A See Chapter 7 - L4445A
L4450A 64 channels, 5V, 30 mA Max 64 channels, 5v, 30 mA Max
L4451A 4 channels 16V, 20 mA 4 channels, 16V, 20 mA
L4452A 32 DIO channels, 42V, 400 mA,
2 channel DAC, 12V, 10 mA
32 DIO channels, 42V, 400 mA,
2 channel DAC, 12V, 10 mA