5-2 Electronic Calibration Modules Reference Guide
Specifications and Characteristics
Environmental Specifications
5-
Environmental Specifications
Operating Temperature and Accuracy Enhancement
Because the dimensions of critical components may vary over temperature,
certain electrical characteristics may change as well. Thus, the operating
temperature is a critical factor in its performance, and must be stable before
use. In addition, excessive air flow can prevent the ECal module from warming
up properly.
Measurement calibration, performance verification, and actual device
measurements must be made within ±1 °C of the error-corrected operating
temperature range specification of the network analyzer. If the ambient
operating temperature drift of the network analyzer exceeds the allowable
error-corrected temperature range, a new measurement calibration must be
performed to ensure optimum accuracy.
Barometric Pressure and Relative Humidity
Barometric pressure and relative humidity also affect module performance. The
dielectric constant of the air between the inner and outer conductors of the
module changes as the air pressure and humidity change.
Samples of this product have been type-tested in accordance with the
Keysight Environmental Test Manual and verified to be robust against the
environmental stresses of storage, transportation and end-use; those
stresses include but are not limited to temperature, humidity, shock,
vibration, and power-line conditions. Test methods are aligned with IEC
60068-2 and levels are similar to MIL-PRF-28800F Class 3.
Table 5-2 Environmental Specifications for all ECal Modules
Specifications Limits
Temperature
Operating (N755xA series) - (Typical)
Operating (N469xD series)
Operating (N443xD series)
Storage
Error-corrected range
+15 °C to +35 °C — up to 75% RH
a
+20 °C to +26 °C – up to 95% RH (see RH N469xD below)
+20 °C to +26 °C – up to 95% RH (see RH N443xD below)
–40 °C to +70 °C
±1 °C of measurement calibration temperature
a. Usable, but not specified from –15 to 55 °C —up to 95% RH.
Relative Humidity (N755xA)
Relative Humidity (N469xD)
Relative Humidity (N443xD)
<75%
Type tested, 0% to 95% at 40°C, non-condensing
Type tested, 0% to 95% at 40°C, non-condensing
Avoid prolonged handling of the module, connectors, and cables. Your
fingers are a heat source that can increase the temperature of these
devices.
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