Agilent Technologies L4400 manual Instrument Considerations, Environmental Operating Conditions

1Introduction 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,	40 channels, 100V rms or DC, 1A,
	60 VA/channel	60 VA/channel
L4433A	Dual/quad 4x8 matrix, 150 Vpeak,	Dual/quad 4x8 matrix, 100 Vpeak,
	0.5A, 10 VA/channel	0.5 A, 10 VA per channel
L4437A	28 channels, 300 V rms or DC, 1A,	28 channels, 100 V rms or DC, 1A,
	60 VA per channel	60 VA per channel
	4 channels, 250 V rms or 30 VDC,	4 channels, 100 V rms or 30 VDC,
	5A, 150 VA per channel	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,	32 DIO channels, 42V, 400 mA,
	2 channel DAC, 12V, 10 mA	2 channel DAC, 12V, 10 mA

2 L4400 User’s Guide