10
User’s and Service Guide N5281-90001
N5281A
General Specifications
Environmental Requirements
The environmental requirements of the test set are listed in
Table 4
. Refer to the E8363B/C,
E8364B/C, N5244/45A and N5264A User’s Guide for environmental specifications.
Ventilation Requirements: When installing the instrument in a cabinet, the
convection into and out of the instrument must not be restricted. The
ambient temperature (outside the cabinet) must be less than the
maximum operating temperature of the instrument by 4 °C for every 100
watts dissipated in the cabinet. If the total power dissipated in the
cabinet is greater than 800 watts, forced convection must be used.
Environmental Tests
The N5281A complies with all applicable safety and regulatory requirements for the intended
location of use.
Equipment Heating and Cooling
If necessary, install air conditioning and heating to maintain the ambient temperature within the
appropriate range. Air conditioning capacity must be consistent with the BTU ratings given in
Table 3
.
Required Conditions for Accuracy Enhanced Measurement
Accuracy–enhanced (error–corrected) measurements require the ambient temperature of the
PNA and test set to be maintained within ± 1 °C of the ambient temperature at calibration.
The instrument can safely operate in a relative humidity of 80% for temperatures to
31 degrees C, decreasing linearly to 50% relative humidity at 40 degrees C.
Table 4
N5281A Operating Environment
Temperature
Measurement Calibration
20 °C to 26 °C (68 °F to 79 °F)
Performance Verification
Temperature must be within 1 °C (1.8 °F) of the
temperature at which the measurement
calibration was performed.
Pressure Altitude
(Operation or Storage)
0 to 3,000 meters (~10,000 feet)