N1951A Electrical Specifications and Characteristics

Discontinued  

Definitions

All specifications and characteristics apply over a 25 °C 5 °C range (unless otherwise stated) and 90 minutes after the instrument has been turned on.

Specification (spec.)

Warranted performance. Specifications include guard bands to account for the expected statistical performance distribution, measurement uncertainties, and changes in performance due to environmental conditions.

Characteristic (char.)

A performance parameter that the product is expected to meet before it leaves the factory, but that is not verified in the field and is not covered by the product warranty. A characteristic includes the same guard bands as a specification.

Typical (typ.)

Expected performance of an average unit which does not include guard bands. It is not covered by the product warranty.

Nominal (nom.)

A general, descriptive term that does not imply a level of performance. It is not covered by the product warranty.

Calibration

The process of measuring known standards to characterize the system's systematic (repeatable) errors.

Corrected (residual)

Indicates performance after error correction (calibration). It is determined by the quality of calibration standards and how well "known" they are, plus system repeatability, stability, and noise.

Uncorrected (raw)

Indicates instrument performance without error correction. The uncorrected performance affects the stability of a calibration.

Configuration

The following specifications are applicable for a system in the following configurations:

Network Analyzer:

Keysight 8720ES Option H32

Test Set:

Keysight N4418A

Calibration Kit:

Keysight 85052D 3.5 mm

Test Port Cables:

Keysight N4418A Option B20

Calibration Technique:

Four-Port SOLT

System Dynamic Range

The test port transmission measurements are valid at 10 Hz IF bandwidth with four-port error correction and +5 dBm default maximum output power. The dynamic range is the difference between rms noise floor and the output power.

Table 1 System Dynamic Range

Frequency Range

Characteristics

50 MHz to 840 MHz

77 dB 

840 MHz to 20.0 GHz

90 dB

Measurement Port

Residual uncertainties for corrected data using four-port error correction. These apply for 25° C with less than 1° C variation from calibration.

Table 2 Measurement Port Characteristics

Description

Characteristic

50 MHz
to
2.0 GHz

2.0 GHz
to
8.0 GHz

8 GHz
to
20.0 GHz

Directivity

48 dB

48 dB

43 dB

Source Match

41 dB

41 dB

38 dB

Load Match

48 dB

48 dB

43 dB

Reflection Tracking

± 0.005 dB

± 0.005 dB

± 0.008 dB

Transmission Tracking

± 0.014 dB

± 0.014 dB

± 0.035 dB

Test Set Performance

Table 3 Test Set Performance

Description

Characteristics

Supplemental Information

Frequency Range

50 MHz to 20.0 GHz

 

Impedance

 

50 Ohms (nom.)

Insertion Loss

8 to 10 dB

 

Isolation (port to port)

³ 85 dB

 

Maximum Operating Level

+20 dBm

 

Damage Level

 

+30 dBm (typical)

DC Bias Range
(Option UNK only)

 

40 VDC, 500 ma

Test Port Connectors

 

50 Ohms (nom.)
3.5 mm (m) Connectors

Power Supply

The power supply requirements for the test sets are listed below.

Table 4 Test Set Power Supply Specifications

Description

Specification

Input Voltage Range

100 to 120 Volts

220 to 250 Volts

Frequency Range

47 to 63 Hertz

Power

40 VA

General Characteristics

The following are the test set environmental operating conditions and physical characteristics.

Environmental Operating Conditions

The environmental operating conditions for the test set are listed below.

Table 5 Test Set Environmental Operating Conditions

Description

Conditions

Operating Environment

Indoor use

Altitude

 

  Operating:  

0 to 2.0 km (6,560 ft)

  Storage:

0 to 15.24 km (50,000 ft)

Temperature

0 C to 40 C

Maximum Relative Humidity

80% for temperatures up to 31 C decreasing linearly to 50% for a temperature of 40 C

This product is designed for use in INSTALLATION CATEGORY II and POLLUTION DEGREE 2, per IED 61010-1 and 664, respectively.

Physical Characteristics

The weight and dimensions for the test sets are listed below.

Table 6 Test Set Weight and Dimensions

Model Number

Weight

Dimensions

Height (A)

Width (B)

Depth (C)

N4418A

9.0 kilograms
(19.9 pounds)

3.0 in
(7.62 cm)

16.75 in
(42.55 cm)

19.25 in
(48.90 cm)